Brassite: Difference between revisions
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===Germany=== |
===Germany=== |
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*Wilhelm Mine (Wechselschacht), [[Bauhaus]], Richelsdorf District, [[Hesse]], [[Germany]] |
*Wilhelm Mine (Wechselschacht), [[Bauhaus]], Richelsdorf District, [[Hesse]], [[Germany]] |
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*Ore dumps, Richelsdorf Smelter, |
*Ore dumps, Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany |
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== References == |
== References == |
Revision as of 01:28, 14 June 2013
Brassite | |
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General | |
Category | Mineral |
Formula (repeating unit) | Mg(AsO3OH)•4(H2O) |
Strunz classification | 08.CE.15 |
Dana classification | 39.01.07.01 |
Crystal system | Orthorhombic |
Identification | |
Color | White |
Cleavage | {001} Perfect |
Fracture | Irregular/Uneven, Splintery |
Tenacity | Brittle |
Streak | White |
Diaphaneity | Translucent |
Density | 2.28 |
Optical properties | Biaxial (+) |
Birefringence | 0.031 |
Pleochroism | Non-pleochroic |
2V angle | 80◦ |
Dispersion | r < v moderate |
Solubility | +++ HCl, + H2O |
References | [1][2][3][4] |
Brassite is a mineral with the chemical formula Mg(AsO3OH)•4(H2O). It was named brassite, in 1973, to honor French chemist R`ejane Brasse, who first synthesized the compound. The type locality for brassite is Jáchymov of the Czech Republic.[2]
Localities
Czech Republic
- Jáchymov (St Joachimsthal), Jáchymov ([[St Joachimsthal) District, Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
France
- Salsigne mine, Salsigne, Mas-Cabardès, Carcassonne, Aude, Languedoc-Roussillon, France
- Villanière (slag locality), Salsigne, Mas-Cabardès, Carcassonne, Aude, Languedoc-Roussillon, France
Germany
- Wilhelm Mine (Wechselschacht), Bauhaus, Richelsdorf District, Hesse, Germany
- Ore dumps, Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany
References