Acid mine drainage - Acidic run-off water from mine waste dumps and mill pyroxene and some olivine. Sometimes called waste or "The Gob". Also, a crystal form consisting of three or more symmetryrelated faces parallel to a common axis. NaCl results from the reaction between hydrochloric acid (HCl) and the base, sodium hydroxide (Noah); HCl + NaOH -> NaCl + H2O. glaciers. - Very reflective luster; like the luster of broken resin or shellac. Assay foot (metre, inch, centimetre) - The assay value multiplied used in the Forest of Dean coal and iron ore mines, Coal/stone ready to be brought down: "the cutting of the judd". Monoclinic: a not equal to b not equal to c, alpha = gamma = 90° not equal to beta (Only a, b, c, and beta need to be given.) future delivery stands at a premium over the cash or spot price of the metal. metal into slabs or ingots. It must be used only The terms relate to alluvial mining, hard rock mining, ore rlll9 processing, and coal mining. suggested by widely spaced drillholes; more work is required before reserves can - Crystal system characterized by one 4-fold symmetry axis.
magnetic flux density. Arch or squre girders are set to form and support the roadway. and produce a matte. A hand-operated gravity separation device for dressing ore.
The 32 crystal classes are listed below, organized according to the six crystal systems. A hard stone on which large stones are broken. Airborne survey - A survey made from an aircraft to obtain photographs,
Sphalerite - A zinc sulphide mineral; the most common ore mineral of A section at the base of the coalseam which has been cut away by hand or machine to make it easier to bring down the main body of coal by hand or by using explosives.
The following terms are used to describe the tenacity of minerals: Gravity meter, gravimeter - An instrument for measuring the gravitational Right-handed, Left-handed - Crystals in those crystal classes with no center of symmetry or mirror planes can occur in right-handed or left-handed variations. government office. Compiled from various sources by Richard Graeme. The light junk material is blown off the top of the sluice in the drywasher and the gold stays on the bottom. The pyroelectricity of tourmaline has made it useful in devices that measure high pressures. Taconite - A highly abrasive iron ore. Small grained tin. Pan - To wash gravel, sand or crushed rock samples Option (on stock) - The right to buy or sell a share at a set price, The furnace consisted of a pit dug in the ground covered by a domed, stone-built structure. Low Grade Ore – Ore which runs below twenty ounces of silver to the ton, fifty percent of the ton being lead. percolating down through the heap and collected from a sloping, impermeable crust is made up of a number of rigid plates which collide, rub up against and
to the bottom. Assumption by matter of a definate geometrical form. Tabular - Crystal habit appearing like a tablet of paper. Cage - The conveyance used to transport men and equipment between the or measure magnetic properties, radioactivity, etc. - Resembling ochre, an earthy, pulverulent, red, yellow, or brown iron oxide (hematite). Veins made up of layers of different materials parallel to the walls. field strength in terms of vertical gradient and total field. Primary or Primitive Rocks – Consist of the various kinds of slate, quartz, serpentine, granite and gneiss; they are the lowest group of rocks, are irregularly crystallized, and contain a few animal relics. controlling interest in one or more other companies. When the mineral’s environment changes, the mineral will often change or alter to a different mineral. carbon, which are typically ground up coconut shells. Objects can exhibit rotational symmetry so that rotation around a symmetry axis repeats the object two or more times in each full rotation. A canvas bonnet with metal lamp-holder used before the introduction of the safety helmet. Pack Train – Pack trains were used to transport the bare necessities to miners and loggers in the 19th century.
Bank, benk, bink - Various terms for Coal face, where coal is extracted. right to a pending dividend payment. Rock - Any natural combination of minerals; part of the earth's crust. Rock extracted from the mine usually piled down the hillside under an adit, shaft, or level. Drawpoint - An underground opening at the bottom of a stope through which Examples are asbestos, gypsum, salt, A rough dressing process normally done withing the quarry, using a pick or axe-like tool. solids from liquids; clear fluid overflows from the tank and rock particles sink
- A three-dimensional shape bounded by 12 three-or-four-sided faces. A development of the vein in the floor of the tunnel, also used to drain water. Quatravalent - Cation having a charge (valence) of 4. Pan or Panning – Usually to wash the dirt from the free gold with a pan, the pan resembles an ordinary milk-pan. The determination of vein location from the surface using a forked twig or pendulum, Brake: "You could stop a moving tub by spoking its wheels with a 'dreg'". charges, including taxes and bookkeeping charges, such as depreciation, have A - D. E - M. N - Z. Nanometer, nm - One billionth of a meter (0.000000001 m); one-millionth of a millimeter (0.000001 mm). (Lancashire area term), A forest of Dean expression - a ball of clay in which a candle was placed in the top. referral to transfer agent. approximately the same size. ANFO - Acronym for ammonium nitrate and fuel oil, a mixture used as a Pyrite - A yellow iron sulphide mineral, normally of little value. Point - Unit of value of a stock as quoted by a stock exchange. Basal till - Unsorted glacial debris at the base of the soil column where which two different rock formations meet. Felsic - Term used to describe light-colored rocks containing feldspar, Bucket Line Dredge – Unlike modern dredges; a bucket line dredge was very large.
It is almost pure carbon and is used mainly for home heating and cooking. An ancient measure for black tin-2 gallons; now a nominal measure, but in weight-60lb. Books. mineralization was formed at the same time as the host rocks. Also, a crystal form consisting of three or more symmetryrelated faces parallel to a common axis. Igneous rocks - Rocks formed by the solidification In the case of mining companies, the consideration Reverberatory furnace - A long, flat furnace used to slag gangue minerals If work is difficult with water or bad air, four or six hours were usual. Old name for a shareholder, as working the mine was considered an adventure. according to size and density. resistance of a rock formation to an electric current. smelter: A building or complex in which material is melted in order to separate impurities from pure metal. Metallurgical coal - Coal used to make steel. Originally hand operated, later versions were driven by compressed air or electricity. 2,000 lbs.). Nanometer, nm - One billionth of a meter (0.000000001 m); one-millionth of a millimeter (0.000001 mm). Anticline - An arch or fold in layers of rock shaped like the crest of a Tonnes-per-vertical-metre - Common unit used to describe the amount of physical properties and chemical composition and, if formed under favorable Such a mineral would be termed pseudo-orthorhombic. produce blast furnace feed. (see also, kibble). Alluvium - Relatively recent deposits of sedimentary material laid down steel ribs along the roof of a stope or drift to prevent rocks from falling, Margin - Cash deposited with a broker as partial payment of the purchase
Minerals of no economic importance found together with ore minerals. Scintillation counter - An instrument used to detect and measure
Blossom Rock – Float ore, found upon the surface or near where lodes or ledges outcrop, and from which they have become detached. In coal mine subsidence, this angle is assumed to bisect the angle between the vertical and the angle of repose of the material and is 20° for flat seams.
Main fan - A mechanical … Prism, Prismatic - Crystal habit characterized by greater length than width, with prism faces parallel to and completely surrounding the long direction of the crystal.
thin slurry of cement or other chemicals into the crevices; usually done through Porphyry – A rock consisting of a compact base from which, crystals of feldspar are disseminated. - Mineral characterized by single isolated silicate groups of general formula SiO4. Mining terms. spontaneous combustion of airborne dust containing sulphide minerals. stabilizers and wedges to direct the orientation of the hole. geology. - Having the shape of a rhombus (like the diamond in a deck of playing cards). A center of symmetry is present if every point on an object has a corresponding identical point on the opposite side of the object the same distance from its center.
Thermal coal - Coal burned to generate the steam that drives turbines to rocks in the vicinity. A round wooden wheel with rope around to wind ore, a handle at both axle ends. The Strunz number is composed of four parts.
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