Mineralpedia Details for Zemannite
Zemannite
Named after Dr. Josef Zemann, a crystallographer and specialist in tellurium minerals and a Professor of Mineralogy at the Univeristy of Vienna in Vienna, Austria. Found in four localities worldwide according to mindat.org, the Moctezuma mine in Mexico boasts as this mineral’s type locality. This rare mineral is found at Moctezuma as a “secondary mineral in the oxidized zone of a hydrothermal Au-Te deposit.”
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/zemannite.pdf
- Formula
- Mg0.5ZnFe3+(Te4+O3)3ยท4.5H2O
- Crystal System
- Hexagonal
- Crystal Habit
- Hexagonal, Prismatic, Acicular
- Cleavage
- None, None, None
- Luster
- Vitreous - Adamantine
- Color
- light brown, dark brown
- Class
- Hexagonal - Dipyramidal
- Hardness
- -
- WebMineral
- View Zemannite
- Mindat
- View Zemannite
Zemannite from Moctezuma mine, Moctezuma, Sonora, Mexico
Amber colored, hexagonal prisms terminated by pyramids to about 0.75mm.
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Zemannite from Bambollita mine, Moctezuma, Sonora, Mexico
Brown acicular crystals in divergent groups to 1mm.
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