Coal that softens and agglomerates on heating and after volatile matter
has been driven off at high temperatures; produces a hard gray cellular
mass of coke. All caking coals are not good coking coals.
See also:coking coal
A laboratory method of indicating the degree of caking, coking, or binding
together of a coal when a sample is heated in a prescribed manner.
Syn:agglutinating power
Panning tin gravels in a half-calabash gourd. Used in prospecting and
alluvial mining in primitive conditions. Pryor, 3
See:turquoise
N. of Eng. Red or mottled Paleozoic marls and shales. Also called
calaminker. See also:symon
a. A commercial, mining, and metallurgical term for the oxidized ores of
zinc (including silicates and carbonates), as distinguished from the
sulfide ores of zinc. Syn:cadmia
AGI
b. A former name for hemimorphite.
c. In Great Britain, a name used for smithsonite. See also:smithsonite
d. A former name for hydrozincite.
e. A special kind of so-called galvanized iron. Also spelled kalamin.
Syn:galmei
Eng. A carbonate of zinc; smithsonite. Fay
An indicator plant which grows only on zinc-rich soils in the zinc
districts of Central and Western Europe. Hawkes, 2
An asparagus-green variety of tremolite. Standard, 2
A monoclinic mineral, 2[AuTe2 ] ; brittle: commonly contains
silver; sp gr, 9.35; an important source of gold.
Prefix meaning containing calcium carbonate.
a. Said of a series of igneous rocks in which the weight percentage of
silica is between 56 and 61 when the weight percentages of CaO and of K
2 O + Na2 O are equal. AGI
b. Said of an igneous rock containing plagioclase feldspar. AGI
A limestone consisting predominantly (more than 50%) of recycled calcite
particles of sand size; a consolidated calcareous sand.
CF:calcareous sandstone
Said of a substance that contains calcium carbonate. When applied to a
rock name, it implies that as much as 50% of the rock is calcium
carbonate. AGI
An indurated soil horizon cemented with calcium carbonate; caliche.
AGI
A carbonate rock containing 50% to 90% dolomite. (Leighton & Pendexter,
1962) CF:calcitic dolomite
Limestone, quicklime, hydrated lime, and cement dusts fall in this class.
These dusts are more or less soluble in the body fluids, and are
eventually absorbed. Pit and Quarry
A deep-sea pelagic sediment containing at least 30% calcareous skeletal
remains; e.g., pteropod ooze. CF:siliceous ooze
Ore in which the gangue consists mainly of carbonate of lime.
Osborne
See:eutrophic peat
See:carbonate rock