|CALAVERITE MINERAL FACTS|
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Calaverite Mineral Facts:
Chemical Formula: AuTe2 (Usually contains a little silver) 44% Gold by weight
Colors: Silver-white or bronzy yellow in color and has a yellow-gray or greenish gray streak. Its surface is frequently covered with a yellow tarnish.
Cleavage: The mineral is brittle and without distinct cleavage.
Luster:. Metallic luster.
Optics: (Refractive Index): Opaque
Identification and Diagnostics
Localities and Origins:
It is believed to have been deposited by ascending magmatic water at comparatively low temperatures. Other rare tellurides belonging to this group are, sylvanite, hessite (Ag2Te) and petzite (Au,Ag2Te), krennerite, AuTe2 , and nagyagite, a sulpho-telluride of lead and gold. Historically, calaverite has been as important ore of gold.
Calaverite, Needle Crystals
Please note that the author, Chris Ralph, retains all copyrights to this entire document and it may not be reproduced, quoted or copied without permission.
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