See:dolly
a. A trucklike platform, with an attached roller, used in shifting heavy
loads.
b. A counterbalance weight sometimes used in a hoisting shaft.
Nelson
c. To break up quartz with a piece of wood shod with iron, in order to be
able to wash out the gold. Fay
d. A tool used to sharpen drills. Stauffer
e. See:car
concentrate the ore by the tossing and packing process.
See also:dolly tub
A large wooden tub used for the final washing of valuable minerals
separated by water concentration in ore dressing. See also:tossing;
dolly. CTD
Pairs of wheels used to support rods of a Cornish pump working on a slope.
Pryor, 3
Calcined dolomite, that is a mixture of the oxides CaO and MgO.
Dodd
a. A trigonal mineral, [CaMg(CO3 )2 ] ; forms saddle-shaped
rhombohedra having rhombohedral cleavage; white to pale tints; in large
beds as dolostone and dolomitic marble, also in veins and in serpentinite;
a source of magnesium and dimension stone. Syn:bitter spar; pearl spar;
magnesian spar; rhomb spar.
b. The mineral group ankerite, dolomite, kutnohorite, minrecordite, and
norsethite.
c. A carbonate sedimentary rock consisting of more than 50% to 90% mineral
dolomite, depending upon classifier, or having a Ca:Mg ratio in the range
1.5 to 1.7, or having an MgO equivalent of 19.5% to 21.6%, or having a
magnesium-carbonate equivalent of 41.0% to 45.4%. Dolomite beds are
associated and interbedded with limestone, commonly representing
postdepositional replacement of limestone. Syn:dolostone;
dolomite rock.
A crystalline variety of limestone, containing in excess of 40% of
magnesium carbonate as the dolomite constituent.
See:dolomite
a. Dolomite-bearing, or containing dolomite; esp. said of a rock that
contains 5% to 50% of the mineral dolomite in the form of cement and/or
grains or crystals. AGI
b. Containing magnesium; e.g., dolomitic lime containing 30% to 50%
magnesium. AGI
a. A limestone that has been incompletely dolomitized. AGI
b. A limestone in which the mineral dolomite is conspicuous, but less
abundant than calcite. Syn:dolomite limestone
CF:magnesian limestone
The process by which limestone is wholly or partly converted to dolomite
rock or dolomitic limestone by the replacement of the original calcium
carbonate (calcite) by magnesium carbonate (mineral dolomite), usually
through the action of magnesium-bearing water (seawater or percolating
meteoric water). It can occur penecontemporaneously or shortly after
deposition of the limestone, or during lithification at a later period.
Syn:dolomization
See:dolomitization
A monoclinic mineral, H8 V6 O16 ; an alteration
product of montroseite in sandstone from the Colorado Plateau; named for
the Dolores River, CO.
A term applied by some petrologists to rock consisting primarily of the
mineral dolomite. Syn:dolomite
A fixed mooring in the open sea formed of a number of piles, or a guide
for ships entering a narrow harbor mouth. Hammond
a. A substructure in a ferromagnetic material within which all of the
elementary magnets (electron spins) are held aligned in one direction by
interatomic forces; if isolated, a domain would be a saturated permanent
magnet. ASM, 1
b. A region within a grain of magnetically ordered mineral, within which
the spontaneous magnetization has a constant value characteristic of the
mineral composition and temperature. Syn:magnetic domain
a. Roof of a furnace that is roughly hemispherical in shape.
b. The steam chamber of a boiler. CF:air dome
c. An uplift or anticlinal structure, either circular or elliptical in
outline, in which the rocks dip gently away in all directions. A dome may
be small, such as a Gulf Coast salt dome, or many kilometers in diameter.
Domes include diapirs, volcanic domes, and cratonic uplifts. Type
structure: Nashville Dome, TN. See also:pericline; arch; salt dome.
Syn:dome structure; structural dome; quaquaversal fold. Less-preferred
syn: swell. CF:basin
d. A general term for any smoothly rounded landform or rock mass, such as
a rock-capped mountain summit, that roughly resembles the dome of a
building; e.g., the rounded granite peaks of Yosemite, CA. The term is
also applied to broadly up-arched regions, such as the English Lake
District or the Black Hills of South Dakota. AGI
e. A large magmatic or migmatitic intrusion whose surface is convex upward
and whose sides slope away at low but gradually increasing angles.
Intrusive igneous domes include laccoliths and batholiths; the term is
used when the evidence as to the character of the lower parts of the
intrusion is insufficient to allow more specific identification.
AGI
f. An open crystal form of four parallel faces that intersect the c axis
and one other; incorrectly called a horizontal prism. Adj. domatic.
g. A symmetrical structural uplift having an approx. circular outline in
plan view, and in which the uplifted beds dip outward more or less equally
in all directions from the center, which is both the highest point of the
structure and locally of the uplifted beds.
h. A mountain having a smoothly rounded summit of rock that resembles the
cupola or dome on a building. AGI
i. An open crystal form consisting of two parallel faces that truncate the
intersections of two sets of pinacoids and are astride a symmetry plane.
a. Coal for use around colliery in miners' houses or for local sale.
Zern
b. Sized coal for use in houses. See also:house coal
c. Coal used in country of origin; not for foreign consumption.
Zern
Routine sampling by mine officials for systematic control of mining
operations. See also:development sampling
See:dome