Mining Glossary
EYES ONLY NOT TO BE
PUBLISHED Stored at GlossaryMining.ProsperSystems.biz Designed to be printed in Booklet Format CAPS JuniorMiners.com (Canadian) U/l case often with links ProspectorsParadise.com
(US) U/l Case* KJ additions often with source as a link CAPS** Wells
Historical Society and Bold definition*** Gold-Speculator NI 43-101
definitions borrowed from NovaGold.com CAPS
definition****
Canadian Institute of Mining,
Metallurgy and Petroleum for NI 43-101 BOLD CAPS***** MINING INDUSTRY INFORMATION
ADIT** - A passageway or opening driven horizontally into the
side of a hill generally for the purpose of exploring or otherwise opening a
mineral deposit. An adit is open to the
atmosphere at one end, a tunnel at both ends. ADIT. A nearly horizontal passage
driven from the surface to the mine workings. ADJACENT PROPERTY a property (a) in which the
issuer does not have an interest; (b) that has a boundary reasonably proximate
to the property being reported on; and (c) that has geological characteristics
similar to those of the property being reported on.**** AERIAL TRAMWAY** - A system for the transporting of ore or
rock in buckets which are suspended from a cable. AIR DRILLING. Rotary drilling using
compressed air. ALLOY** - A compound of two or more metals, usually produced
by fusion. ALLUVIAL DEPOSIT. Sometimes referred to as
placer. Sand, gravel etc, removed
from a parent rock by water, time and erosion and deposited at a distance
location. Alluvial
or Bench Deposits - An alluvial deposit is an ancient river-washed
rock and gravel bar that may be thousands of feet from the nearest stream,
creek, or river. Alluvial (or bench)
deposits contain untapped potential for finding gold because such areas have
never been worked before. AMALGAMATION- A process by which gold and silver are
extracted from an ore by dissolving them in mercury. ANTICLINE. Upward fold or arch in the rock strata. APEX** - The top or terminal edge of a vein on the surface or
its nearest point to the surface. ASSAY** - To test ores or minerals by chemical or other
methods for the purpose of determining the amount of valuable metals contained. ASSAY. The testing of an ore to
determine the content of valuable minerals. Can be wet or fire. ASSESMENT WORK. Work that is required to
maintain one property. This is
set by government set standards.
Companies must spent a certain amount of
dollars by, mapping, testing, trenching etc. ASSESSMENT WORK** - The amount of work specified by law,
which must be done each year to retain legal control of mining lands. ATTITUDE. Direction and degree of a
dip of a structure. This could be
a vein, lode or zone of mineralization.
Some call it dip and strike. AURIFEROUS. This means gold bearing material (the kind
everyone would like to find). AUTOGENOUS GRINDING** - The process of grinding in a rotating
mill which uses as a grinding medium large pieces or pebbles of the ore being
ground, instead of conventional steel balls or rods. BACKSTOPE** - The initial lift or slice when commencing to stope or mine from a drift. BALL MILL** - A piece of milling equipment used to grind ore
into small particles. It is a
cylindrical shaped steel container filled with steel balls into which crushed
ore is fed. The ball mill is rotated
causing the balls themselves to cascade, which in turn grinds the ore. BASAL TILL. Clay deposit material left along at the base
of a glacier. BASALT. Fine grained,
darker-colored igneous rock. Old lava beds that have hardened. BASE METAL** - A metal inferior in value to gold and silver,
generally applied to the commercial metals such as copper, lead, etc. BASE METALS. Commercial (non precious)
metals such as lead, zinc, copper or nickle. BEDROCK** - Solid rock forming the earth's crust, frequently
covered by overburden or water. BEDROCK. The solid base of earth
under the over burden and soils or gravels. Bench Deposit* see Alluvial
or Bench Deposits. BIT** - The cutting end of boring instrument. In rock drilling, it is frequently made with
ultra-hard material such as diamonds or tungsten carbide. BITUMINOUS COAL. A middle rank coal formed by pressure and
heat on lignite. Usually has a high Btu
value (British Thermal Unit) and sometimes know as
soft coal. BLAST HOLE** - A hole drilled for purposes of blasting rather
than for exploration or geological information. BLOCK CAVING** - A cheap method of mining in which large
blocks of ore are under cut, the ore breaking and caving under its own weight. BONANZA** - Very rich ore, or situation. BOREHOLE. The hole that is made from
drilling a well, core etc. BREAST** - A working face, usually restricted to a stope. BrownField* - Existing mining area opposite of a new, BTU. British thermal unit. The amount of energy that is required to
raise one pound of water one degree Fahrenheit. Bucket Line Dredge - Unlike
the modern, small scale dredges; a bucket line dredge was very large. Instead of sucking up water and gravel
through the use of water pressure, the bucket line dredges would scoop it up
and run it through a long sluice box.
Only 10 cents of gold was needed for each square yard of material to
make a profit back when these dredges were common in the 1890s and on into the
early 1900s. BULLION** - Metal in bars, ingots or other uncoined form. CAGE** - The conveyance used to transport men and equipment
in a shaft. CALORIFIC VALUE. The amount of heat that can be obtained from
one pound of coal or oil measured in BTU's. CAMBRIAN. The earliest period of the
Paleozoic era to which systems of rock may be assigned. CAPEX or capex* Capital expenditures creating future
benefits. CARBONATES. Minerals consisting of
carbonates of calcium, iron or magnesium. CATHODE** - A rectangular plate of metal produced by
electrolytic refining which is melted into commercial shapes such as ingots. CHANGE HOUSE** - A special building constructed at a mine where
the miner changes to his working clothes; also known as a dry house. CHUTE** - An inclined opening, usually constructed of timber
and equipped with a gate, through which ore is drawn from a stope
into mine cars. CLAIM** - A portion of mining land held under federal or
provincial law. CLAIM. Claims are
parcels of land that are staked by companies or individuals for the purpose of
exploring and mining. Depending on the
area and countries they are measured off in different sizes of acreage. CLAIM- MILL SITE*****: A mill site must be
located on non-mineral land. Its purpose is to either (1) support a lode or
placer mining claim operation or (2) support itself independent of any
particular claim. A mill site must include the erection of a mill or reduction works
and/or may include other uses reasonably incident to the support of a mining
operation. Descriptions of mill sites are by metes and bounds surveys or legal
subdivision. The maximum size of a mill site is 5 acres. CLAIM-
PATENTED*****:
A patented mining claim is one for which the Federal Government has passed its
title to the claimant, making it private land. A person may mine and remove
minerals from a mining claim without a mineral patent. However, a mineral
patent gives the owner exclusive title to the locateble
minerals. It also gives the owner title to the surface and other
resources. With a Patented Cailm: You own the Land as well as the minerals CLAIM- PLACER*****: Mineral deposits
subject to placer claims include all those deposits not subject to lode claims.
Originally, these included only deposits of unconsolidated materials, such as
sand and gravel, containing free gold or other minerals. By Congressional acts
and judicial interpretations, many nonmetallic bedded or layered deposits, such
as gypsum and high calcium limestone, are also considered placer deposits.
Placer claims, where practicable, are located by legal subdivision of land(for
example: the E 1/2 NE 1/3 NE 1/4, Section 2, Township 10 South, Range 21 East,
Mount Diablo Meridian). The maximum size of a placer claim is 20 acres per locator . CLAIM- TUNNEL
SITES*****:
A tunnel site is where a tunnel is run to develop a vein or lode. It may also
be used for the discovery of unknown veins or lodes. To stake a tunnel site,
two stakes are placed up to 3,000 feet apart on the line of the proposed
tunnel. Recordation is the same as a lode claim. Some States require additional
centerline stakes (for example, in CLAIM-
UNPATENTED*****:
An Un-patented mining claim is a particular parcel of Federal land, valuable
for a specific mineral deposit or deposits. It is a parcel for which an
individual has asserted a right of possession. The right is restricted to the
extraction and development of a mineral deposit. The rights granted by a mining
claim are valid against a challenge by the CLAIM- LODE*****: Deposits subject to
lode claims include classic veins or lodes having well-defined boundaries. They
also include other rock in-place bearing valuable minerals and may be broad
zones of mineralized rock. Examples include quartz or other veins bearing gold
or other metallic minerals and large volume but low-grade disseminated metallic
deposits. Lode claims are usually described as parallelograms with the longer
side lines parallel to the vein or lode . Descriptions
are by metes and bounds surveys (giving length and direction of each boundary
line). Federal statute limits their size to a maximum of 1,500 feet in length
along the vein or lodge. Their width is a maximum of 600 feet, 300 feet on
either side of the centerline of the vein or lode. The end lines of the lode
claim must be parallel to qualify for underground extralateral
rights. Extralateral rights involve the rights to
minerals that extend at depth beyond the vertical boundaries of the claim. COLLAR** - The term applied to the timbering or concrete
around the mouth of a shaft; also used to describe the top of a drill hole. CONCENTRATE** - A product containing the valuable metal and
from which most of the waste material in the ore has been removed. CONCENTRATE. A
product that has the valuable material after all the waste has been eliminated. CORE BARREL** - That part of a string of tools in diamond
drilling in which the core specimen collects. CORE** - The long cylinder of rock, about one inch or more in
diameter, that is recovered by the diamond drill. CORE. Sometimes called core
sample. A
sample of rock that has been drill out of the area of interest. Coyote - The process of
digging in river-borne gravels by tunneling until bedrock is hit. The tunnel is dug in hopes of finding a rich
bedrock deposit deep in the gravel bar. CRETACEOUS. A period in history from
130 to 60 million years ago. CROSSCUT** - A horizontal opening driven across the course of
a vein or structure, or in general across the strike of the rock formation; a
connection from a shaft to an ore structure. CRUSHER** - A machine for crushing rock, such as a gyratory
crusher, jaw crusher, stamp mill, etc. CUT OFF. The lowest the grade of ore that can be mined profitably. CYANIDATION** - A method of extracting gold or silver by
dissolving it in a weak solution of sodium cyanide. DATA VERIFICATION the process of confirming that
data has been generated with proper procedures, has been accurately transcribed
from the original source and is suitable to be used.**** DE-AREATOR TANK : This tank is used to process ore into gold in
hard rock mining. DEPOSIT. An area that has a quantity
of ore or other material that is deemed to be mineable. DEVELOPMENT PROPERTY a property that is being
prepared for mineral production and for which economic viability has been
demonstrated by a feasibility study.**** DEVELOPMENT** - Is the underground work carried out for the
purpose of reaching and opening up a mineral deposit. It includes shaft sinking, cross-cutting,
drifting and raising. DEVONIAN. A period from about 400 to
360 million years ago. DIAMOND DRILL** - A rotary type of rock drill in which the
cutting is done by abrasion rather than percussion. The cutting bit is set with diamonds and is
attached to the end of long hollow rods.
The drill cuts a core of rock which is recovered in long cylindrical
sections, an inch or more in diameter. DIAMOND DRILLING. A rotary drill which cuts
by abrasion rather than percussion.
The bit is of diamond tips. DIFFERENTIAL FLOTATION** - A milling process using the
flotation process, by which concentrates are made of each of the various
valuable minerals in an ore. DILUTION** - Waste of low grade rock which is unavoidably
removed along with the ore in the mining process. DIP NEEDLE** - A compass whose needle is mounted so as to
swing in a vertical plane, used for determining the magnetic attraction of
rocks. DIP** - The angle at which a vein, structure or rock bed is
inclined from the horizontal, measured at right angles to the strike. DISCLOSURE any oral statement or written
disclosure made by or on behalf of an issuer and intended to be, or reasonably
likely to be, made available to the public in a jurisdiction of Canada, whether
or not filed under securities legislation, but does not include written
disclosure that is made available to the public only by reason of having been
filed with a government or agency of government pursuant to a requirement of
law other than securities legislation.**** DRAG FOLD** - Rock that has been folded or bent back on
itself. Dredge - A common piece
of mining equipment today, the dredge sucks up dirt and gravel from within the
stream bed by the use of water pressure.
The dredge is operated by the use of a water pump and a network of
hoses. Dredge hose sizes can be anywhere
from one inch in diameter to 20 inches or more. DREDGING. A means of extracting gold
bearing materials or any other material from under water. Drift
- In mining, a drift is defined as a horizontal passageway that is excavated
along a rich vein of ore. Hard rock
mines usually use drifts to obtain the rich ore, though, some hard rock mines
are open pit. DRIFT (DRIVE)** - A horizontal passage underground that
follow along the length of a vein or rock formation as opposed to a crosscut
which crosses the rock formation. DRIFTER** - A rock drill used for boring horizontal holes for
blasting. DRY HOUSE** - A building where the miner changes to his
working clothes. Drywasher - A common desert
mining tool. The drywasher is
like a highbanker but lacks the need for water. A drywasher
operates by the use of wind. The light
junk material is blown off the top of the sluice in the drywasher
and the gold stays on the bottom. The
sluice riffles in a drywasher are backwards for
better recovery. DUMP** - A pile or heap of rock or ore on the surface. EARLY STAGE EXPLORATION PROPERTY a property that
has (a) no current mineral resources or mineral reserves defined; and (b) no
drilling or trenching proposed; in a technical report being filed in a local
jurisdiction.**** ELUVIAL. Material that has been moved from its source
via time and water. Most placer mines
are eluvial. EXPLORATION INFORMATION geological, geophysical,
geochemical, sampling, drilling, trenching, analytical testing, assaying,
mineralogical, metallurgical and other similar information concerning a
particular property that is derived from activities undertaken to locate,
investigate, define or delineate a mineral prospect or mineral deposit.**** EXPLORATION** - The prospecting, diamond drilling and other
work involved in searching for ore. EXTRACTION. The process of taking out
the good ore from the waste materials. FACE** - As applied to a drift, crosscut or stope, is the end in which work is progressing. FAULT ZONE. A fault, instead of being a single clean
fracture, may be a zone hundreds or thousands of feet wide. The fault zone consists of numerous
interlacing small faults or a confused zone of gouge, breccia, or mylonite. FEASIBILITY STUDY a comprehensive study of a
mineral deposit in which all geological, engineering, legal, operating,
economic, social, environmental and other relevant factors are considered in
sufficient detail that it could reasonably serve as the basis for a final
decision by a financial institution to finance the development of the deposit
for mineral production.**** FERROUS. Any mineral that containing
iron. FILTER PRESS** - This is used to filter out impurities out of
gold. FINE GOLD** - Almost pure gold. Fineness is the proportion of pure gold or
silver in jewellery or bullion expressed in parts per
thousand. Thus, 925
fine gold indicates 925 parts out of 1,000, or 92.5%, is pure gold. FISSURE** - An extensive crack, break or fracture in rocks. FISSURE. A crack or fracture in rocks. FLOAT** - Pieces of rock that have been broken off and moved
from their original location by natural forces such as frost action or
glaciers. FLOAT. Pieces rock
which become separated from the main body due to time and weathering. FLOATATION** - A milling process by which some mineral
particles are induced to become attached to bubbles and float, and others to
sink. In this way the valuable minerals
are concentrated and separated from the worthless gangue. Flour Gold/Gold Dust - Gold that is so fine that it looks and
feels like flour or dust. "The bread and butter of prospecting. Nuggets are just a bonus. FLOWSHEET** - The sequence of operations, step by step, by
which ore is treated in a milling, concentration, or smelting process. FLUME. Used by the old timers, flumes were built to
divert water from a source to where the mining was taking place. Like old wooded aqueducts. Flumes
- Flumes are like sluice boxes, they do not have riffles though and are used
solely to transport water in areas where a ditch would be impossible (cliffsides, rocky hillsides). Two flumes were built in the construction of
the China Ditch. FOOTWALL** - The wall or rock on the underside of a vein or
ore structure. FREE MILLING** - Ores of gold or silver from which the
precious metals can be recovered by concentrating methods without resort to
roasting or chemical treatment. GAMMA** - A unit of
measurement of magnetic intensity. GANGUE** - The worthless minerals associated with valuable
minerals in an ore deposit. GEIGER COUNTER** - An instrument used in the search for
radioactive minerals, particulary uranium, as it is
capable of detecting (by means of a Geiger Mueller tube) the rays emanating
from such minerals. It registers the
frequency or intensity of these rays either visually (by dial or flashing
light), audibly (by earphones) or both. GEIGER COUNTER. A device used to find and sense radioactive
mineral. GEOCHEMICAL. The study of the chemical
composition of rocks, soil and other sediments. GEOLOGICAL SURVEY. The drilling surface rock
outcroppings for the purpose of exploratory development. GEOLOGY** - The science concerned with the study of the rocks
which compose the earth. GRAB SAMPLE. Sample
of rock or material grabbed at random to be analyzed. GRIZZLY** - A grating (usually constructed of steel rails)
placed over the top of a chute or ore pass for the purpose of stopping the
larger pieces of rock or ore. GROUTING** - The process of sealing off a water flow in rocks
by forcing thin cement slurry, or other chemicals into the cervices; usually
done through a diamond drill hole. GRUBSTAKE** - Finances or supplies of food, etc.,furnished a prospector on
promise of some share in any discoveries he make. GUIDES** - The timber
along the sides of a shaft for the purpose of steadying, or guiding, the cage
or conveyance. HANGING WALL** - The wall or rock on the upper or top side of
a vein or ore deposit. Hard
Rock Mine - A hard rock mine is a tunnel that is dug into solid rock
for the sole purpose of finding valuable or precious rocks, minerals, or
metals. Gold originates deep within the
earth in places called Pockets. The pockets are filled with gold, heavy ore,
and quartz. Hhydraulic Mining- Hydraulic mining used water that was
diverted into ditches and wooden flumes at high elevations, and gravity did the
rest. Channeled through heavy iron
pipes, the water exploded from a nozzle far below with a force of 5000
pounds. When that awesome stream of
water was focused and directed, the mountains were literally blasted away. Highbanker - A highbanker is a sluice box
with mobility. Instead of being put
right in the creek like a sluice, the highbanker uses
a water pump to transport the water into higher and sometimes richer placer
reserves. In addition to the ability to
go just about anywhere, the highbanker also is able
to run more material in less time than the sluice. These characteristics make the highbanker a common modern day mining tool. HIGHGRADE** - Rich ore. Selective mining of the best ore in a deposit. HIGHGRADED** - One who steals rich ore, especially gold, from
a mine. HISTORICAL ESTIMATE an estimate of mineral
resources or mineral reserves prepared prior to February 1, 2001.**** HOIST** - The machine used for raising and lowering the cage
or other conveyance in a shaft. HOST ROCK** - The rock containing an ore deposit. HYDRAULIC** - This describes a common method of mining in
which water under pressure is used to cut away banks of gold-bearing gravels or
overburden. Water is brought to the
operation form a "head"; the water is then discharged into a
pipeline, at the end of which is a nozzle called a "monitor" or a
"giant. By using the water
provided, the overburden can be cut away to expose the gold-bearing gravels
which are then sluiced, using the water provided. IMMM Reporting Code the classification system and
definitions of mineral resources and mineral reserves approved by The
Institution of Materials, Minerals, and Mining in the United Kingdom, as
amended.**** IN SITU. In a natural or original
position. Indicated
Resource is that part
of a mineral resource for which quantity, grade or quality, densities, shape
and physical characteristics can be estimated with a level of confidence
sufficient to allow the appropriate application of technical and economic
parameters to support mine planning and evaluation of the economic viability of
the deposit. The estimate is based on
detailed and reliable exploration and testing information gathered through
appropriate techniques from locations such as outcrops, trenches, pits,
workings and drill holes that are spaced closely enough for geologic and grade
continuity to be reasonably assumed.*** INDUCED POLARISATION. A geophysical prospecting
method of passing an electrical current through the ground and measuring the
effect of rocks and minerals in its path. INDUSTRIAL MINERALS. Non metallic. Examples:
Salts, silica, gravels etc. Inferred
Resource is that part
of a mineral resource for which quantity and grade or quality can be estimated
on the basis of geological evidence and limited sampling and reasonably
assumed, but not verified, geological and grade continuity. The estimate is based on limited information
and sampling gathered through appropriate techniques from locations such as
outcrops, trenches, pits, workings and drill holes.*** INTERMEDIATE ROCKS. Igneous rocks containing between 52 and 66 percent silica. Between the chemical
composition of acid and basic rocks. JAW CRUSHER** - A machine in which the rock is broken by the
action of moving steel jaws. JIG** - An apparatus used in milling to concentrate ore on a
screen submerged in water, either by a reciprocating motion of the screen or by
the pulsation of water through it. JIG.
A machine used to collect concentrates of ore by water pulsation. JORC Code the
Australasian Code for Reporting of Mineral Resources and Ore Reserves prepared
by the Joint Ore Reserves Committee of the Australasian Institute of Mining and
Metallurgy, Australian Institute of Geoscientists and Mineral Council of
Australia, as amended.**** Junior
Mining Company* an exploration company
that looks for new deposits of gold, silver, uranium or other precious minerals. These companies target properties that are
believed to have significant potential for finding large mineral deposits. They are a major source of future mine
supply. They find promising properties,
prove the resources, stake the raw material and bring mines into
production. With highly trained
geologists, geophysicists and engineers on staff, it is the junior mining
company that typically is best positioned to determine whether a property is
economically viable. Juniors are
critical players in the early stages, bridging the long lag time between when a
new deposit is found and when it is brought into production. LAGGING** - Planks or small timbers placed along the roof of
a stope or drift to prevent rocks from falling,
rather than to support the main weight of the overlying rocks. LAUNDER** - A chute or trough for conveying pulp, water or
powdered ore in the milling process. LEACHING. A process of chemical
extraction of minerals from ore material. Example:
Gold is extracted using the heap leach method. LODE** - A mineral deposit in solid rock. LODE. Mineral deposit contained in solid rock. (mother lode) Long Tom - Similar to a sluice box, but longer
and skinnier. Measured
Resource is that part
of a mineral resource for which quantity, grade or quality, densities, shape
and physical characteristics are so well established that they can be estimated
with confidence sufficient to allow the appropriate application of technical
and economic parameters to support production planning and evaluation of the
economic viability of the deposit. The
estimate is based on detailed and reliable exploration, sampling and testing
information gathered through appropriate techniques from locations such as
outcrops, trenches, pits, workings and drill holes that are spaced closely
enough to confirm both geologic and grade continuity.*** Metallurgy* - domain of
materials science that studies the physical and chemical
behavior of metallic elements, their intermetallic compounds,
and their mixtures, which are called alloys.
It is also the technology
of metals: the way in which science is applied to their practical use. Metallurgy, Clean* -
_________________________________________________. MILL HEADS** - The average grade of ore fed into a mill. MILL** - a) A plant in which ore is treated for the recovery
of valuable metals. b) A machine
consisting of a revolving drum, for the fine grinding of ores as a preparation
for treatment. MINERAL PROJECT any exploration, development or
production activity, including a royalty interest or similar interest in these
activities, in respect of diamonds, natural solid inorganic material, or
natural solid fossilized organic material including base and precious metals,
coal, and industrial minerals.**** Mineral
Reserve is the
economically mineable part of a measured or indicated mineral resource
demonstrated by at least a preliminary feasibility study. This study must include adequate information
on mining, processing, metallurgical, economic and
other relevant factors that demonstrate, at the time of reporting, that
economic extraction can be justified. A
mineral reserve includes diluting materials and allowances or losses that may
occur when the material is mined.
Mineral reserves are subdivided in order of increasing confidence into
probable mineral reserves and proven mineral reserves.*** Mineral
Resource is a
concentration or occurrence of natural, solid, inorganic or fossilized organic
material in or on the Earths crust in such form and quantity and of such a
grade or quality that it has reasonable prospects for economic extraction. The location, quantity, grade, geological
characteristics and continuity of a mineral resource are known, estimated or
interpreted from specific geological evidence and knowledge. Mineral resources are subdivided, in order of
increasing geological confidence, into inferred, indicated and measured
categories.*** MONITOR** - An apparatus fitted with a nozzle and used to
direct water under high pressure in order to remove overburden or to break down
gold-bearing gravels in order to sluice them.
Also known as a "giant. Mother Lode
- Every miner hopes of finding their own "mother lode" or source of
the gold that's laden in the rivers. A
mother lode is where the gold is trapped inside veins of quartz on mountain
sides. The erosion of land causes the
gold to break away from this source and eventually wash down into the
river. The larger the pieces of gold
being found in the river, the closer one is to the mother lode. Mother lode also refers to the vast area in MOTHERLODE** - The starting place or origin of a metal. A vein which contains the
original metal "in place. NATIONAL INSTRUMENT 43-101 (NI
43-101). Is a rule developed by the
Canadian Securities Administrators (CSA) and administered by the provincial
securities commissions that govern how issuers disclose scientific and technical
information about their mineral projects to the public. It covers oral statements as well as written
documents and websites. It requires that
all disclosure be based on advice by a "qualified person" and in some
circumstances that the person be independent of the issuer and the property. A qualified person (QP) as defined in NI
43-101 as an individual who: NUGGET** - A water-worn piece of precious metal, usually
implying some size. Open Pit Mine
- In search of rich veins of quartz, open pit mines are common today. Because of the danger associated with drifts,
open pit mines are dug from the ground down and are never tunneled. They can be best described as, "A big
hole. ORE-BEARING** - Rock that has some type of ore present in its
composition. OVERBURDEN. Material such us dirt, clay
and sand that cover e surface area. Pack
Train - Pack trains were used to transport the bare necessities to miners and
loggers in the 19th century. They
usually consisted of 5 or more horses or mules and a few men. PALEOZOIC. The time between the Pre
Cambrian and the Mesozoic. PAN** - To wash gravel or rock that have been ground in a pan
to separate gold. PAYDIRT. The pay. The material washed in sluicing that contains
the gold. PEBBLE MILL** - A grinding mill similar in construction and
action as a ball mill, but in which the charge is made up of hard pebbles in
place of the more conventional steel balls. PERCUSSION DRILLING. A method of drilling process that involves
hammering the drill bit down the hole. PERMIAN. A time period from about
290 to 240 million years ago. Placer Mines
- Placer Mining is the most common form of mining, it involves mining gold that
has been washed away from its motherlode (or source)
and deposited in small cracks, holes, or sand bars in the mainstream of a river.. It almost always
involves the use of water in some way or another. Placer mining tools generally include the
rocker box, sluice, dredge, highbanker, shaker table,
drywasher, and always the pan. Placer Claims are 20 acres, and many modern
miners have their own placer claim. PLACER** - An alluvial deposit of sand and gravel containing
valuable minerals such as gold. PLACER. Referred to mostly in gold. Mining the surface. Eluvial type mining. PLANT** - A group of buildings, and especially to their
contained equipment , in which a process or function
is carried out; on a mine it will include warehouses, hoisting equipment,
compressors, repair shops, offices, mill or concentrator. Pocket
- In mining, a pocket is defined as a cavity filled with
ore, or a rich deposit of precious metal. POCKETS** - These are cavities in the earth, filled with ore,
or a rich deposit of gold. PORTAL** - The surface entrance to a tunnel or adit. PRE-FEASIBILITY STUDY see PRELIMINARY FEASIBILITY
STUDY**** PRELIMINARY ASSESSMENT a study that includes an
economic analysis of the potential viability of mineral resources taken at an
early stage of the project prior to the completion of a preliminary feasibility
study.**** PRELIMINARY FEASIBILITY STUDY and PRE-FEASIBILITY
STUDY each mean a comprehensive study of the viability of a mineral project
that has advanced to a stage where the mining method, in the case of
underground mining, or the pit Rules and Policies December 23, 2005 (2005)
28 OSCB 10358 configuration, in the case of an open pit, has been
established and an effective method of mineral processing has been determined,
and includes a financial analysis based on reasonable assumptions of technical,
engineering, legal, operating, economic, social, and environmental factors and
the evaluation of other relevant factors which are sufficient for a qualified
person, acting reasonably, to determine if all or part of the mineral resource
may be classified as a mineral reserve.**** Probable
Reserve is the
economically mineable part of an indicated, and in some circumstances, a
measured mineral resource demonstrated by at least a preliminary feasibility
study. This study must include adequate
information on mining, processing, metallurgical, economic and other relevant
factors that demonstrate, at the time of reporting, that economic extraction
can be justified.*** PRODUCING ISSUER an issuer with annual audited
financial statements that disclose (a) gross revenues, derived from mining
operations, of at least $30 million for the issuers most recently completed
financial year; and (b) gross revenues, derived from mining operations, of at
least $90 million in the aggregate for the issuers three most recently
completed financial years.**** PROFESSIONAL ASSOCIATION a self-regulatory
organization of engineers, geoscientists or both engineers and geoscientists
that (a) is (i) given authority or recognition by
statute in a jurisdiction of Canada, or (ii) a foreign association listed in
Appendix A; (b) admits individuals on the basis of their academic
qualifications and experience; (c) requires compliance with the professional
standards of competence and ethics established by the organization; and (d) has
disciplinary powers, including the power to suspend or expel a member.**** Prospect
- Can have many different definitions to a miner. A prospect could be a hope for or
anticipation of making a profit in mining.
It can also mean to search for gold.
Another definition can state it as meaning a place where a mineral
deposit is sought or found. PROSPECT** - A mining property, the value of which has not
been proved by exploration. Proven
Reserve is the
economically mineable part of a measured mineral resource demonstrated by at least
a preliminary feasibility study. This
study must include adequate information on mining, processing, metallurgical,
economic and other relevant factors that demonstrate, at the time of reporting,
that economic extraction can be justified.*** PULP** - A name for gold in the mining process. PYRITE** - A hard, heavy, shiny, yellow mineral, being a sulphide of iron.
It is sometimes called "fools gold. PYRITES. A hard, heavy, shiny, yellow mineral, FeS2 or
iron disulfide, generally Also called iron pyrites, mica pyrites, fool's gold,
sulfur balls. QUALIFIED PERSON an individual who (a) is an
engineer or geoscientist with at least five years of experience in mineral
exploration, mine development or operation or mineral project assessment, or
any combination of these; (b) has experience relevant to the subject matter of
the mineral project and the technical report; and (c) is in good standing with
a professional association and, in the case of a foreign association listed in
Appendix A, has the corresponding designation in Appendix A.**** QUANTITY either tonnage or volume, depending on
which term is the standard in the mining industry for the type of mineral.**** QUATERNARY. A time period dating from
about 1.8 million years ago to the present. RAISE** - A vertical or inclined underground working that has been
excavated from the bottom upward. RAKE** - The trend of an ore body along the direction of its
strike. REAMING SHELL** - A component of a string of rods used in diamond
drilling; it is set with diamonds, and placed between the bit and the core
barrel to maintain the gauge of the hole. RECOVERY** - The percentage of valuable metal in the ore that
is recovered by metallurgical treatment. ROCK BURST** - The sudden failure of walls or pillars in a
mine caused by the weight of pressure of the surrounding rocks, and accompanied
by a violent release of energy. ROCKBOLTING** - The act of consolidating roof strata by means
of anchoring and tensioning steel bolts in holes especially drilled for the
purpose. Rocker Box or Cradle - Today, the rocker box is not used as extensively as the
sluice, but still is an effective method of recovering gold in dryer than usual
areas. Like a sluice box the rocker box
has riffles and a carpet in it to trap the gold. It was designed to be used in areas with less
water than a sluice box. The process
involves pouring water out of a small cup and then rocking the small sluice box
like a cradle, thus the name rocker box or cradle. ROD MILL** - A rotating cylindrical mill which employs steel
rods as a grinding medium. ROTARY DRILLING. A drilling method where the drill pipe and
bit is rotated and allowed to drill its way down. ROYALTIES. Money owed to the claim holder or owner. NSR (net smelter royalty) SAMPLE** - A small portion of rock or mineral deposit,
usually taken for the purpose of being assayed to determine possible content of
valuable elements. SAMREC Code the South African Code for Reporting
of Mineral Resources and Mineral Reserves prepared by the South African Mineral
Committee (SAMREC) under the auspices of the South African Institute of Mining
and Metallurgy (SAIMM), as amended.**** SEC Industry Guide 7 the mining industry guide
entitled Description of Property by Issuers Engaged or to be Engaged in
Significant Mining Operations contained in the Securities Act Industry Guides
published by the United States Securities and Exchange Commission, as
amended.**** SHAFT** - A vertical
or inclined excavation for the purpose of opening and servicing a mine. It is usually equipped with a hoist at the
top, which lowers and raises a conveyance for handling men and material. SHAFT. A vertical excavation used for the purpose of
opening a mine. SHAKER SCREEN** - This screen filters out impurities in
milling of gold. Shaker Table
- Shaker tables are like giant gold pans.
An engine drives a belt that vibrates a huge bucket. Instead of the junk material being separated
from the gold, the gold is seperated from the
junk. The vibration of the bucket causes
the gold to settle to the bottom, the junk goes into a small classifier and is
dumped out into a tailing pile. SHOOT. A concentration of mineral values. SKIP** - A self-dumping type of bucket used in a shaft for
hoisting ore or rock. SLAG. The waste product from
smelting. Sluice Box - The
Sluice Box is the most commonly used tool in mining aside from the shovel and
pan. A long, narrow, wood or metal
artificial channel that water passes through when put in a creek or stream. Nineteenth century miners used and twentieth
century miners still use sluice boxes to separate the dirt and junk material
away from the gold. Gold, the most dense metal known to man, stays in the sluice box
because of its heavy weight. SLUICE. A long trough
with riffles used to catch gold. Sourdough
- A highly experienced miner who has prospected for many years. SQUARE SET** - A set of timbers used for support in
underground mining, consisting of cap, girt and post. STATION** - An enlargement of a shaft made of the level
horizon used primarily for the storage and handling of equipment. STOCK PILE** - Broken ore accumulated in a heap on the
surface, pending treatment or shipment. Stope -
A step-like excavation formed by the removal of ore from around a mine shaft. STOPE** - An excavation in a mine from which ore is being or
has been extracted. SUMP** - An excavation underground for the purpose of
catching or storing water; the bottom of a shaft is commonly used for this
purpose. Tailing Pile
- Gravel, dirt, and rocks with no gold. Whatever is left
behind from mining activity. Occasionally, a gold nugget can slip out of a
mining classifier or piece of equipment and end up in the tailing pile, but in
modern sluice boxes most of the gold never makes it to the tailing pile. TAILINGS** - Material rejected from a mill after the
recoverable valuable minerals have been extracted. TAILINGS. Material left over after the rock has been
processed of its ore. TECHNICAL REPORT a report
prepared and filed in accordance with this Instrument and Form 43-101F1
Technical Report that does not omit any material scientific and technical
information in respect of the subject property as of the date of the filing of
the report; **** Ten Bagger*
Produces 10x the investment rare TERTIARY. A time dating from about 65
to 2 million years ago. TRAM** - To haul cars
of ore or waste in a mine. TROMMEL. A machine that washes
placer material by rotation. TROY OUNCES** - A type of measurement for gold. A troy is different than an ounce. TUBE MILL** - A piece of milling equipment consisting of a
revolving cylinder half filled with steel rods or balls and into which crushed
ore is fed for fine grinding; the material to be ground is mixed with water or
other solution and comes out as a slurry. TUNNEL** - A horizontal underground passage that is open at
both ends; the term is loosely applied in many cases to an adit, which is open
at only one end. ULTRABASIC. Igneous rock containing
less than 45 percent silica. ULTRAMAFIC. Igneous rock composed essentially of iron and
magnesium. VEIN** - A fissure, fault or crack in a rock filled by
minerals that have travelled upwards from some deep source. VEIN. An fracture or crack
in a rock that contains mineralized material. VUG. A cavity in a rock. WEDGE** - As used in diamond drilling, refers to the placing
of a wedge at some point in the hole for the purpose of deflecting the bit in
another direction. WINZE** - A vertical or inclined opening sunk from a point
inside a mine. Similar
to a shaft, but the latter starts at the surface. WRITTEN DISCLOSURE any writing, picture, map or
other printed representation whether produced, stored or disseminated on paper
or electronically, including websites.**** Appendix - JuniorMiners.comSymbols & Meanings
Magnesium - Mg A Bit About
Gold
Gold is the most malleable and ductile metal. One ounce of gold can be beaten out to 300
sqft. Gold is a good conductor of
electricity and heat. It is not affected
by exposure to air or to most reagents.
It is inert and a good reflector of infrared radiation. Gold is usually alloyed to increase its
strength. Pure gold is measured in troy
weight, but when gold is alloyed with other metals the term karat is used to
express the amount of gold present. Commonly Used Gold Weights
(based on troy ounces) 1 troy ounce = 31.1034807 grams DWT is an abbreviation for penny
weight.
1 oz.= 20 DWT DWT/OZ: Specific Gravity Of
Minerals
The specific gravity of a substance is the ratio of its
weight to the weight of an equal volume of water. 2.7 - rock NOTES |