A tetragonal mineral, CaBi(CO3 )OF ; in pegmatite from Krupka,
Czech Republic.
Calcspar from Derbyshire lead mines, United Kingdom. Also spelled kebble.
a. Derb. A veinstone, consisting of a mixture of calcium carbonate and
other minerals. Fay
b. N. of Eng. The amount of coal sent out by the various miners during a
certain period. Fay
A provincial series of the early Proterozoic in Michigan and Wisconsin.
AGI
The pieces of core causing a block in a core barrel, the removal of which
allows the rest of the core in the core barrel to slide out.
See:legend
a. A well-defined, easily identifiable stratum or body of strata that has
sufficiently distinctive characteristics (such as lithology or fossil
content) to facilitate correlation in field mapping or subsurface work.
AGI
b. A bed, the top or bottom of which is used as a datum in making
structure-contour maps. Syn:key horizon; index bed; marker bed.
AGI
The first blocks that are removed in opening up a new quarry floor.
A slot enlarged at one end to allow entrance of a chain or bolt that can
then be held by the narrow end. Nichols, 1
See:key bed
a. A symmetrically tapered piece at the center or crown of an arch.
b. A filling-in block of cast iron used in some lead smelting furnaces.
Webster 2nd
Blue chalcedony colored by chrysocolla.
The mineral microcline, orthoclase, or sanidine.
Syn:potassium feldspar
In this process, the feed coal is heated sufficiently to remove all the
moisture from the coal and to mildly carbonize it. The carbonized hot
coal, in a plastic state, flows to an extruder which agglomerates the
product into pellets.
A native mineral salt of India, predominantly sodium chloride with large
amounts of sodium sulfate, the composition varying greatly with locality
where obtained. Synthetic Khari salt has 40% anhydrous sodium sulfate.
Kaufmann
See:kesterite
A titanian variety of samarskite.
See:kibble
a. Steel bucket used during shaft sinking. Pryor, 3
b. To carry in a hoisting bucket, such as ore. Syn:junket; kibbal.
Standard, 2
Eng. A rope or chain for hoisting a kibble or bucket. Standard, 2
a. Assay with metal values. Also, a geophysical indication of ore. As
opposed to background values. (Slang only.) Hoffman
b. A small sidewise displacement or offset in a borehole caused by the
sidewise deviation of a bit when entering a hard, tilted rock stratum
underlying a softer stratum. Long
c. A quick snap of the drill stem caused by the core breaking in a blocked
core barrel or sudden release of a momentary bind. CF:step
Long
a. Arkansas. To break the coal on both sides of the auger hole that
contains the powder, usually along a joint in the coal. Fay
b. A track arrangement for reversing the direction of travel of cars
moving by gravity. Fay