zemannite
Sign in to saveZemannite 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
Article
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.