a. See:variscite
b. A green gem cut from variscite and its surrounding matrix of gray,
reddish, or brownish crystalline quartz or chalcedony.
See:trass
A bright, apple- or blue-green variety of microcline; may be carved for
art objects. Syn:amazonstone
See:amazonite
a. A mineraloid; amorphous hydrocarbons from resins secreted by trees or
shrubs upon injury, derived by oxidation and polymerization of nonvolatile
terpenoids; in sedimentary rocks and on beaches, e.g., Baltic Sea.
See also:chemawinite
b. A hard, brittle fossil resin, yellow to brown, that takes a fine
polish; may contain fossil insects and plant matter. Syn:succinite;
bernstein; electrum. See also:resin
c. A group of fossil resins containing considerable succinic acid and
having highly variable C:H:O ratios; e.g., almashite, simetite,
delatynite, and ambrosine. See also:copal
A local trade name for a yellowish-green variety of chalcedony from Death
Valley, CA. English
Former spelling of amber.
See:phlogopite
A gem material consisting of small fragments of genuine amber artificially
united or reconstructed by heat and pressure; may be characterized by an
obvious flow structure or a dull spot left by a drop of ether. Also
spelled ambroid. Syn:pressed amber
A brownish-yellow variety of opal stained by iron oxide.
a. The environment surrounding a body but undisturbed or unaffected by it.
Hy
b. Encompassing on all sides; thus, ambient air is the air surrounding.
Strock, 2
A yellowish to clove-brown amber found in the phosphate beds near
Charleston, SC; it may be a modern resin that has been subjected to the
action of salt water. Rich in succinic acids. Fay; Tomkeieff
Characteristic reactions of minerals to basic methods of mineral
processing, studied in preliminary testwork on unknown ores.
Pryor, 3
Permissible explosive used in coal mines. Bennett
A direct-fired Belgian furnace used in the United States, conforming
essentially to the Liege design. Fay
See:Champlain forge
a. Nephrite in Wyoming.
b. See:californite
A red pyrope garnet in Arizona and New Mexico.
See:churn drill
The quantity-distance table, prepared and approved by the Institute of
Makers of Explosives (IME), for storage of explosive materials to
determine safe distances from inhabited buildings, public highways,
passenger railways, and other stored explosive materials.
An apple-green silicate mineral belonging to the phyllosilicate group and
occurring in foliated hexagonal plates. See also:magnesium kaolinite
Kirk; Webster 3rd