Gold Mining Properties
Gold Mining

GLOSSARY

Adit
A horizontal passage driven from the surface for working unwatering a mine.

Amalgamation
A process for recovering gold and silver by passing a finely divided ore suspended in water over the surface of liquid mercury to form an amalgam. The amalgam is subjected to a fire-refining process for the recovery of the gold or silver.

Breccia
A Fragmental rock whose components are angular as opposed to a conglomerate composed of water worn fragments.

Calaverite
A telluride of gold that often contains silver (contains about 39.5% gold, 3.1% silver).

Commercial Ore Deposit
A definite ore body which can be mined and sold at a reasonable rate of return over the costs of mining, transportation and sale.

Concentrate
Ore which has been enriched by processing with mechanical and/or chemical techniques.

Crosscut
A small passageway driven at right angles to the vein or main drift to connect with another vein or opening for mining purposes.

Crude Ore
Ore as directly recovered from its place in the earth without further processing of any kind.

Development
The efforts and techniques involved in exposing and preparing an established commercially mineable ore deposit for extraction and sale.

Drift
A tunnel-like excavation below the surface of the earth and often in the plane of a vein.

Dump
A pile of refuse, ore, or rock around the mouth of a shaft or in close proximity to a mill or concentration plant.

Exploration
The efforts and techniques involved in investigating and searching for the presence and location of mineral deposits.

Grade
The classification of an ore according to its value.

Inferred Ore
Ore for which quantitative estimates are based largely on broad knowledge of the geologic character of the deposit and for which there are few, if any, samples or measurements.

Krennerite
A telluride of gold and silver with variable composition (contains about 49.86% gold, .46% silver, 55.68% tellurium in Cripple Creek).

Lode
A tabular deposit of valuable mineral between boundaries.

Mill
An assemblage of equipment used to recover components of an ore into a salable product.

Mine
Any excavation in the earth for minerals.

Mineral Prospect
Mineral in such a degree of concentration as to warrant investigation and search for mineral of ore grade.

Mineralization
The process of replacing the organic constituents of a body by inorganic fossilization.

Minerals
A homogeneous compound of inorganic elements occurring in or on the earth and usually exhibiting a crystalline structure.

Ore
That part of a mineral deposit which can be economically extracted or produced.

Patented Mining Claim
A tract of land commonly having a rectangular configuration with dimensions of 600 feet maximum width and 1,500 fee maximum length along a lode or vein and consisting of approximately 20 acres, as to which ownership of the minerals therein and subsequently all other rights in such land have been granted and conveyed to a proper applicant by the United States Government or, in some cases, by a state of the United States.

Phonolite
A group of fine-grained extrusive rocks primarily composed of alkali feldspar.

Placer
An alluvial or glacial deposit, as of sand or gravel, containing particles of gold or other valuable materials.

Probable (Indicated) Ore
Ore for which quantity and grade and/or quality are computed from information similar to that used for proven ore, but the sites for inspection sampling and measuring are further apart or are otherwise less adequately spaced. The degree of assurance, although lower than that for proven ore, is high enough to assume continuity between points of observation. This is ore as to which the risk of failure in continuity is greater than for proven ore but as to which there is sufficient evidence for assuming continuity of ore.

Production
The exploitation of a commercially mineable ore deposit.

Proven (Measured) Ore
Ore for which (a) quantity is computed from dimensions revealed in outcrops, trenches, workings, or drill holes and grade and/or ore quality are computed from results of detailed sampling;and (b) the sites for inspection, sampling and measurement are spaced so closely and the geologic character is so well defined that size, depth, shape, and mineral content of the ore are well establish. This is a body of ore so extensively sampled that the risk of failure in the continuity of the ore is reduced to a minimum.

Raise
An underground upward inclining or vertical drift.

Shaft
A vertical or inclined excavation of limited area compared with it's depth, made for finding and mining ore, raising water, ore or rock, hoisting and lowering or raising miners and material or ventilating underground workings.

Stope
An excavation from which ore has been removed in a series of steps, either overhand or underhand.

Sylvanite
A telluride of gold and silver (conains about 24.5% gold, 13.4% silver)

Tailings
The waste material remaining after the removal of valuable minerals in the processing of the product of the mine

Telluride
A mineral compound of tellurium with a metal, chiefly gold.

Tunnel
A horizontal or nearly horizontal underground passage that is open at both ends to the atmosphere. Often, the term is applied to an adit.

Unpatented Mining Claim
A tract of land having a rectangular configuration consisting of not in excess of 20 acres, and having dimensions not in excess of 600 fee by 1,500 feet, located by a claimant of federal public domain land and not previously withdrawn from such purpose b the United Sates Government which gives a claimant only the right to possess the claimed land to the exclusion of all others except the United States Government, for the purpose of, and only during, exploration development, and/or extraction of minerals. Title to and ownership of the land covered by an unpatented mining claim remains vested in the United States Government.

Vein
A geological feature in the crust of the earth which has width, length, and depth in relation to a plane that has attitude and bearing and is filled with quartz and/or other mineralization.

 



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