Fluckite
| Fluckite | |
|---|---|
| General | |
| Category | Phosphates, Arsenates, Vanadates |
| Formula (repeating unit) | CaMnH2(AsO4) 2 2H2O [1] |
| Space group | Triclinic |
| Identification | |
| Color | Colorless, Light to Dark Pink |
| Crystal habit | Crystals prismatic, typically radiating to spherulitic |
| Cleavage | (010) Perfect, (100) Good, (101) Indistinct |
| Mohs scale hardness | 3.5-4 |
| Luster | glassy |
| Streak | white |
| Density | 3.05 |
| Optical properties | Biaxial (+), probable. α = 1.618 β = 1.627
γ= 1.642 2V(meas.) = Verylarge. |
| Refractive index | translucent |
| Birefringence | 0.024 |
| References | [2],[3],[4],[5], |
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Fluckite is a mineral with the chemical formula CaMnH2(AsO4) 2 2H2O [1]
Fluckite is named after the minerologist Pierre Fluck of Louis Pasteur University in Strasbourg, France.[6] Fluckite's mineral crystallography is triclinic meaning that it has three vectors of unequal length and three different interior angles that do not equal 90°.[7] This mineral is a member of the P space group.
References
- ^ a b Mindat website. Accessed September 16, 2010.
- ^ http://www.mindat.org/min-1564.html
- ^ http://www.webmineral.com/data/Fluckite.shtml
- ^ http://www.mineralatlas.com/mineral%20general%20descriptions/F/fluckitepcd.htm
- ^ http://www.handbookofmineralogy.com/pdfs/fluckite.pdf
- ^ webmineral website. Accessed September 16, 2010.
- ^ *M. Fleischer, L.J. Cabri, G.Y. Chao, A. Pabst (1980) New Mineral Names*, American Mineralogist, 65,1065-1070.
- M. Fleischer, L.J. Cabri, G.Y. Chao, A. Pabst (1980) New Mineral Names*, American Mineralogist, 65,1065-1070.