The following is a glossary of the most common mining terms in use:
A level driven into a mine from the side of a hill.
A mixture of two or more metals, or a baser metal fused with a finer one.
An accumulation of sand or gravel deposited by streams or rivers."
An alloy of mercury with some other metals.
The separation of compound substances into their elementary constituents.
A substance having no water in its composition.
Steam or smokeless coal.
An arch-shaped form of strata.
The edge of a vein which by its inclination is nearest the surface.
A portion of a lode that is left standing in a mine to support the hanging wall.
A primitive Mexican crushing-mill.
A chemical test to show the quantity of pure metal in ores or minerals.
Mineral that is taken from the back of a lode.
That part of the lode nearest the surface, or winch is between a level and the one working above.
A. conglomerate carrying gold.
The metal not classed as 'noble,' or precious.
The outcrop of a lode.
A set of stamps, usually five.
Amalgamation by putting mercury into the mortar.
A seam of ore running horizontally or parallel with the enclosing formation.
The hard, solid rock underlying auriferous gravel.
Plains which companies took up on which to erect machinery, dump tailings, etc., and now proved to be valuable as deep levels.
The mining rights of the bewaarplaatsen.
Tin ore ready for smelting.
An ore consisting of zinc and sulphur.
A lode showing no surface outcroppings, and that cannot be traced by surface indications.
The blue ground in which diamonds are usually found.
A term used to signify a large deposit of rich ore.
Bocks which have been carried down the river-beds by the force of the water.
A small vein shooting from the main lode.
Angular fragments of rock cemented together by mineral substances.
Gold and silver in bulk, uncoined and unmanufactured.
An appliance used for treating tailings.
A patch or pocket of ore in a lode.
A kiln in which mineral is roasted.
A mine where the vein matter is barren or where the vein is pinched.
A union of carbonic acid and a base substance.
Containing carbon; the formation in which coal-measures are found.
An oxide of tin.
The falling in of the sides of a shaft or excavation.
The main lode of a district.
A shoot of ore in a vein.
Containing chloride of silver.
To convert into chloride, preparatory to amalgamation.
A rich patch of ore in a vein. Also spelt 'shoot' or 'shute.'
The collection of the valuable product from the stamp-mill or copper plates.
The richest portion of ore obtained by concentration.
The process by which the richest portion of the ore is concentrated, and the less valuable portion removed.
Fragments of rocks cemented together by mineral substances.
A vein lying between dissimilar formations.
The plates in a stamp-mill over which the ore slowly flows as it leaves the mortars. They are coated with mercury, to which the gold particles adhere.
Searching for ore by shallow pits, or making open cuts from the surface.
A smaller vein running across the main lode.
The barren rock near to an ore deposit.
The direction taken by a vein.
A slow, alarming movement of the ground in the workings of a mine.
Having the qualities of chalk.
A cleft in the earth's crust containing a mineral vein.
Fragments of a reef which show on the surface.
Lodes crossing the main lodes at an angle.
A level driven through a lode at right angles, or across the course of a vein to intersect it.
A machine for breaking quartz.
To intersect a lode.
A barren part of a lode.
Work in a mine that is necessary, but unproductive, such as sinking shafts and driving levels.
Resolved into its elementary particles.
Rock laid bare by the action of water.
A mass of rich gravel or ore.
Work done to open up a mine.
An intrusive rock, often called greenstone.
The inclination of a reef.
Auriferous gravel or wash.
A displacement of a vein by a disturbance of the strata.
Dispersed or scattered in small particles through the rock.
Sorting and preparing ore for reduction.
A level or tunnel in a mine.
A pile of ore taken from the mine and deposited on the surface.
The extremity of a drive or level.
To work or develop a mine or property.
The top of a shaft.
The furthermost end of a level, drift, tunnel or excavation.
A dislocation or displacement of a lode.
A small vein which joins the main lode.
A cleft in the earth's crust filled with mineral matter, and extending in depth for a considerable distance.
Minute particles of gold floating on running water.
Where the lode turns and lies in a horizontal position.
Mercury which has become useless for amalgamation purposes by reason of its having a film on it caused by some base substance.