Adamantine Spar

Adamantine Spar

Adamantine is a mineral, often referred to as adamantine spar. It is a silky brown form of corundum. It has a Mohs rating of 9. [cite web |url=http://www.mindat.org/min-5135.html |title=Adamantine Spar |accessdate=September 15 |accessyear=2007]

Adamantine is also used as an adjective to refer to non-metallic, brilliant light reflecting and transmitting properties, known as "adamantine luster". Diamond is the best known material to be described as having adamantine luster, although anglesite, cerussite and corundum in some of its forms are also described in this way. [cite web |title=Adamantine - World of Earth Science |url=http://www.bookrags.com/research/adamantine-woes-01/ |accessdate=September 15 |accessyear=2007]

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  • adamantine spar — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

  • Adamantine — can mean: *The mythical material adamant or adamantine, see: Adamant *The mineral adamantine spar, a variety of Corundum, see: Adamantine Spar *For|other uses of adamant, adamantium, and similar terms|Adamant (disambiguation)Adamantine is also… …   Wikipedia

  • Корунд — [инд. kauruntaka] м л, α Al2О3. Ничтожные примеси Сг, Fe, Mn, Ti. Триг. К лы боченковидные, столбчатые, призм., пирамидальные, таблитчатые и др. Дв. по {1011} часто полисинтетические, редки по {0001}. Сп. отсутствует, отдельность по {0001} и …   Геологическая энциклопедия

  • корунд — corundum, corundite, adamantine spar, diamond spar *Korund поширений мінерал класу оксидів та гідрооксидів синювато або жовтувато сірого кольору. Склад: Al2O3. Сингонія тригональна. Густина 4. Твердість 9. Прозорі відміни К., забарвленні в… …   Гірничий енциклопедичний словник

  • Al2O3 — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

  • Corundum — Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are used as… …   The Collaborative International Dictionary of English

  • Corundums — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

  • Emery — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

  • oriental amethyst — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

  • oriental ruby — Corundum Co*run dum (k[ o]*r[u^]n d[u^]m), n.; pl. {Corundums} (k[ o]*r[u^]n d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are… …   The Collaborative International Dictionary of English

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