dioptase

(daɪˈɒpteɪs; -teɪz) n (Minerals) a green glassy mineral consisting of hydrated copper silicate in hexagonal crystalline form. Formula: Cu6Si6O18.6H2O[C19: from French, from Greek dia- through + optos visible]

di•op•tase

(daɪˈɒp teɪs)

n. a mineral, hydrous copper silicate, CuSiO₃∙H₂O, occurring in emerald-green crystals. [< French (1801)]

Dioptase

dioptase

[dī′äp‚tās] (mineralogy) CuSiO₂(OH)₂ A rare emerald-green mineral that forms hexagonal, hydrous crystals.

Dioptase

a mineral whose structural features correspond to the so-called cyclosilicate type. Its chemical composition is Cu₆[Si₆O₁₈] 6H₂O. Dioptase crystallizes in the trigonal system, forming acicular short-columnar small crystals, and accumulates in druses or granular aggregates of bright emerald green color. It is transparent and has an intense luster. The mineral has a hardness of 5.0-5.5 on the mineralogical scale and a density of 3,280-3,350 kg/m³. It is usually found in the oxidized zones of copper sulfide deposits along with malachite, calcite, and quartz and sometimes with hemimorphite and other minerals. Dioptase was discovered by Ashir Muhammad of Bukhara in 1785 (deposit at Altyn-Tiube in Central Kazakhstan). There are also a number of deposits in Africa (Katanga and elsewhere).

单词	dioptase
释义	dioptase dioptase (daɪˈɒpteɪs; -teɪz) n (Minerals) a green glassy mineral consisting of hydrated copper silicate in hexagonal crystalline form. Formula: Cu6Si6O18.6H2O[C19: from French, from Greek dia- through + optos visible] di•op•tase (daɪˈɒp teɪs) n. a mineral, hydrous copper silicate, CuSiO₃∙H₂O, occurring in emerald-green crystals. [< French (1801)] Dioptase dioptase [dī′äp‚tās] (mineralogy) CuSiO₂(OH)₂ A rare emerald-green mineral that forms hexagonal, hydrous crystals. Dioptase a mineral whose structural features correspond to the so-called cyclosilicate type. Its chemical composition is Cu₆[Si₆O₁₈] 6H₂O. Dioptase crystallizes in the trigonal system, forming acicular short-columnar small crystals, and accumulates in druses or granular aggregates of bright emerald green color. It is transparent and has an intense luster. The mineral has a hardness of 5.0-5.5 on the mineralogical scale and a density of 3,280-3,350 kg/m³. It is usually found in the oxidized zones of copper sulfide deposits along with malachite, calcite, and quartz and sometimes with hemimorphite and other minerals. Dioptase was discovered by Ashir Muhammad of Bukhara in 1785 (deposit at Altyn-Tiube in Central Kazakhstan). There are also a number of deposits in Africa (Katanga and elsewhere).
随便看	doxography doxological doxologically doxologies doxologize doxology doxophobia doxorubicin doxorubicin hcl, hydroxydaunorubicin doxorubicin hydrochloride doxorubicin hydrochloride, liposomal doxorubicin-induced cardiomyopathy doxorubicin, liposomal doxorubicin resistance gp170 doxosma dox-t doxx doxxed doxxing doxy doxy 100 doxy caps doxycin doxycyclin doxycycline