gray copper ore
Tetrahedrite Tet`ra*he"drite, n. [So called because the crystals of the species are commonly tetrahedrons.] (Min.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a considerable presentage of silver. Called also {gray copper ore}, {fahlore}, and {panabase}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • gray copper ore — noun see gray copper …   Useful english dictionary

  • gray copper — noun or gray copper ore : tetrahedrite …   Useful english dictionary

  • Red-lead ore — Red Red, a. [Compar. {Redder} ( d?r); superl. {Reddest}.] [OE. red, reed, AS. re[ a]d, re[ o]d; akin to OS. r[=o]d, OFries. r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw. r[ o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r[ a]uds, W. rhudd,… …   The Collaborative International Dictionary of English

  • Red copper — Red Red, a. [Compar. {Redder} ( d?r); superl. {Reddest}.] [OE. red, reed, AS. re[ a]d, re[ o]d; akin to OS. r[=o]d, OFries. r[=a]d, D. rood, G. roht, rot, OHG. r[=o]t, Dan. & Sw. r[ o]d, Icel. rau[eth]r, rj[=o][eth]r, Goth. r[ a]uds, W. rhudd,… …   The Collaborative International Dictionary of English

  • Green iron ore — Green Green (gr[=e]n), a. [Compar. {Greener} (gr[=e]n [ e]r); superl. {Greenest.}] [OE. grene, AS. gr[=e]ne; akin to D. groen, OS. gr[=o]ni, OHG. gruoni, G. gr[ u]n, Dan. & Sw. gr[ o]n, Icel. gr[ae]nn; fr. the root of E. grow. See {Grow.}] 1.… …   The Collaborative International Dictionary of English

  • Green lead ore — Green Green (gr[=e]n), a. [Compar. {Greener} (gr[=e]n [ e]r); superl. {Greenest.}] [OE. grene, AS. gr[=e]ne; akin to D. groen, OS. gr[=o]ni, OHG. gruoni, G. gr[ u]n, Dan. & Sw. gr[ o]n, Icel. gr[ae]nn; fr. the root of E. grow. See {Grow.}] 1.… …   The Collaborative International Dictionary of English

  • fahlore — Tetrahedrite Tet ra*he drite, n. [So called because the crystals of the species are commonly tetrahedrons.] (Min.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties… …   The Collaborative International Dictionary of English

  • panabase — Tetrahedrite Tet ra*he drite, n. [So called because the crystals of the species are commonly tetrahedrons.] (Min.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties… …   The Collaborative International Dictionary of English

  • Tetrahedrite — Tet ra*he drite, n. [So called because the crystals of the species are commonly tetrahedrons.] (Min.) A sulphide of antimony and copper, with small quantities of other metals. It is a very common ore of copper, and some varieties yield a… …   The Collaborative International Dictionary of English

  • Блёклые руды — БЛЕКЛЫЕ РУДЫ м лы, относящиеся к изоморфному ряду теннантит Cu12As4S13 тетраэдрит Cu12Sb4S13. Примеси: Ag, Zn, Fe, Bi, реже Hg, Pb, Ni, Co, V, Sn, Ge, Те, W. Куб. Дв. по {111}. Агр.: плотные, зернистые, вкрапленность. Стально серый до железно… …   Геологическая энциклопедия

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