An explosive resembling dynamite No. 2 and consisting of nitroglycerin
with a more or less explosive dope. Fay
Permissible explosive; used in mines. Also called L.F. Vigorite No. 5.
Bennett
An isometric mineral, (Cu,Ni,Co,Fe)(S,Se)2 ; pyrite group; forms
small iron-black cubo-octahedra and radiating nodular masses; at Villamin,
Spain.
An etching reagent consisting of 95 ml of ethyl alcohol, 5 ml of
hydrochloric acid, and 1 g of picric acid. Osborne
An isometric mineral, NaF ; soft; deep carmine; forms small crystals and
grains in nepheline syenite; in Islands of Los, Guinea.
Copper ore, with a green efflorescence like verdigris. Fay
A monoclinic mineral, (Na,Ca,K)4 Ti4 AlSi6 O23
(OH).2H2 O ; white to colorless; forms crystals and spherical
aggregates in nepheline syenite in the Kola Peninsula, Russia.
Prepared from polyvinyl acetate. Properties are toughness, adhesiveness,
imperviousness to moisture, and stability toward light and heat. Used as
an interlayer in safety glass and as a bonding resin. Crispin
A highly pleochroic variety of clinopyroxene found in the Caucasus
Mountains, Russia.
A violet variety of diopside found at St. Marcel, Piemont, Italy.
See:copiapite
To branch in diverging lines. Webster 3rd
a. A divergent, branchlike pattern of fault distribution. The term is used
in Russian literature. AGI
b. A fold pattern in which the axial surfaces diverge or fan out from a
central bundle. AGI
c. A sheaflike pattern, as shown on a map, of mountain ranges diverging
from a common center. Ant: syntaxis. AGI
a. Unworked or untouched; said of areas where there has been no mining.
Mason
b. An unexploited area or rock formation in which boreholes have not been
drilled. Long
c. See:primary metal
Fresh clay, as distinguished from that which has been fired. AGI
An area of coal that is in place (in situ) and unimpaired by mining
activities. Nelson
Pure metal obtained directly from ore. See also:primary metal
ASM, 1; Newton, 1
A green manganese-rich variety of andalusite.
a. A ferruginous chlorite in chloritic iron ore.
b. A general term formerly applied to indeterminable and obscure green
alteration products occurring in scales and threads in the groundmass of
porphyritic rocks.
The calibration of alternating current instruments is based upon what is
called the virtual value, and this corresponds to the direct-current
value, which would produce the same heating effect in a given resistance.
The peak value of alternating voltage or current is 1.4 times greater than
the virtual value. Mason
An instrument used to measure the viscosity. Syn:viscosimeter
AGI