zemannite
Sign in to saveAlso known as IMA1968-009
Zemannite is a very rare oxide mineral with the chemical formula Mg0.5ZnFe3+[TeO3]3·4.5H2O. It crystallizes in the hexagonal crystal system and forms small prismatic brown crystals. Because of the rarity and small crystal size, zemannite has no applications and serves as a collector's item.
Key facts
- Mineral.name
- Zemannite
- Mineral.category
- Oxide mineral
- Mineral.image
- Zemannite-77637.jpg
- Mineral.imagesize
- 260px
- Mineral.IMAsymbol
- Zem
- Mineral.molweight
- 741.25 g/mol
- Mineral.strunz
- 4.JM.05
- Mineral.color
- Brown
- Mineral.habit
- Hexagonal, prismatic
- Mineral.system
- Hexagonal
- Mineral.class
- Dipyramidal (6/m) H-M symbol: (6/m)
- Mineral.symmetry
- P63/m
- Mineral.cleavage
- None
- Mineral.luster
- Vitreous – adamantine
- Mineral.refractive
- nω = 1.85; nε = 1.93
- Mineral.opticalprop
- Uniaxial
- Mineral.birefringence
- δ = 0.08
- Mineral.streak
- White
via Wikipedia infobox
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Encyclopedic overview
6 sectionsContents
- History and etymology
- Related minerals
- Morphology and structure
- References
- Further reading
- External links
Zemannite is a very rare oxide mineral with the chemical formula Mg0.5ZnFe3+[TeO3]3·4.5H2O. It crystallizes in the hexagonal crystal system and forms small prismatic brown crystals. Because of the rarity and small crystal size, zemannite has no applications and serves as a collector's item.
==History and etymology== Zemannite was discovered in 1961 in a tellurium deposit near Moctezuma, Sonora, Mexico as an unnamed new mineral. It was not accepted then by the International Mineralogical Association (IMA) due to the uncertainty in its chemical composition.
Excerpted from Wikipedia’s “zemannite” article, available under the CC BY-SA 4.0 licence.