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Mineralpedia Details for Otavite

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Otavite

Otavite

Named for the type locality at the Tsumeb mine which lies within the Otavi district in Namibia. Otavite is an uncommon mineral found additionally in localities in Russia, Italy, Greece, England, Australia, China, Vietnam, and the United states among a few others. It is a secondary mineral and forms in oxidized, hydrothermal base-metal deposits. Otavite can be found in association with smithsonite, cerussite, hydozincite, hemimorphite, azurite, malachite, rosasite, olivenite, pyromorphite, calcite, and fluorite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/otavite.pdf

Formula
CdCO3 
Crystal System
Trigonal 
Crystal Habit
Encrustations, Euhedral Crystals 
Cleavage
Perfect, Perfect, Perfect 
Luster
Adamantine - Pearly 
Color
yellow brown, white, reddish, reddish white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Brittle - Conchoidal 
Hardness
3.5-4 
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Otavite from Tsumeb mine, Tsumeb, Namibia

Otavite
            from Tsumeb mine, Tsumeb, Namibia
Special Info
EDS

Pearly white, rhombic Otavite crystals to about 0.5mm as single crystals and in aggregate clusters associated with a bit of Azurite and Malachite. 

Analyzed specimen by EDS - all the pearly white little micro crystals on the Cerussite is Otavite. Excellent very rich specimen. Verified Otavite is very hard to obtain. Comes with an old Ward's and Lidstrom's label - see prov. tab.

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