A distinctly laminated lacustrine sediment consisting of clay-rich varves;
also the upper, fine-grained, winter layer of a glacial varve.
Syn:varve clay
Clayey soil containing thin alternate layers of different particle sizes;
often combine the undesirable properties of clay and silt; formed from
seasonal deposits from glacial streams. Nelson
An orthorhombic mineral, Al4 (PO4 )3 (OH)3
.13H2 O(?) ; at Vashegy, Hungary, and near Manhattan, NV.
a. A vessel or tub in which ore is washed or subjected to chemical
treatment, as cyanide vat and chlorination vat. Syn:tank
b. Salt pit. AGI
c. A term used in the Southwestern United States for a dried and encrusted
margin around a waterhole. AGI
A hexagonal mineral, CaCO3 ; trimorphous with calcite and
aragonite; at Ballycraigy, Larne, Northern Ireland.
A pure, dense, homogeneous, dove-colored, fine-textured limestone that
breaks with a smooth and more or less pronounced conchoidal fracture that
contains relatively few fossils, and that typically has a white, chalky
appearance on weathered surfaces. Named after T. Wayland Vaughan
(1870-1952), U.S. paleontologist. AGI
A monoclinic mineral, Pb2 Cu(CrO4 )(PO4 )(OH) ;
fibrous.
A triclinic mineral, FeAl2 (PO4 )2 (OH)2 .6H
2 O ; less hydrous than metavauxite or paravauxite; blue.
A strong frame shaped like an isosceles triangle, turning on a pivot at
its apex and used as a bell crank to change the direction of a main pump
rod. It is used with Cornish pumping engines. Webster 3rd; Fay
Sloughing box, used to separate slime (as overflow) from faster-settling
portion of solids in pulp. Pryor, 3
See:gravity-discharge conveyor elevator
a. In mining and tunneling, a cut where the material blasted out in plan
is like the letter V; usually consists of six or eight holes drilled into
the face, half of which form an acute angle with the other half.
Fay
b. In underground blasting, a type of cut employed in which the cut holes
meet in a V to pull the cut to the bottom of the holes properly. A single
pair of holes may do in one kind of rock, but in another, two or three
sets of V-holes entirely across the face may be needed. Also
See also:wedge cut
A triclinic and monoclinic mineral, Sr2 B11 O16 (OH)
5 .H2 O ; trimorphous with p-veatchite and veatchite-A.
a. An entity represented as a directed magnitude, such as velocity, which
is defined as consisting of a speed and a direction. See also:scalar
Hy
b. See:hard vector
See:wedge cut; V-cut.
a. A layer of soft clay or earth on the sides of a fault or dike.
Syn:veez
b. The acute angle between the fault plane and a coal seam; e.g., working
the coal to the vees of the fault. Nelson
A pneumatic table, of U.S. design, for the drycleaning of coal, an
improved form of the S.J. table. Nelson
See:vees
See:plumbojarosite
Same as fundamental jelly, carbohumin, etc. Syn:jelly
Tomkeieff