Mathesiusite
| Mathesiusite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | K5(UO2)4(SO4)4(VO5)·4(H2O) |
| Crystal system | Tetragonal |
| Identification | |
| Color | Yellowish green |
| Cleavage | Perfect |
| Fracture | Irregular/Uneven |
| Tenacity | Brittle |
| Mohs scale hardness | 2 |
| Streak | Greenish white |
| Density | 4.02 g/cm3 (calculated) |
Mathesiusite is a sulfate mineral containing potassium, vanadium, and uranium and has the chemical formula: K5(UO2)4(SO4)4(VO5)·4(H2O). It is a secondary mineral formed during post-mining processes.
It was discovered in Jáchymov mining district, Czech Republic and named in 2013 after Johannes Mathesius (1504–1565), who studied minerals from the area (known then as Joachimsthal, Bohemia).[1]
References
- ↑ Plášil, J.; Veselovský, F.; Hloušek, J.; Škoda, R.; Novák, M.; Sejkora, J.; Čejka, J.; Škácha, P.; Kasatkin, A.V (April 1, 2014). "Mathesiusite, K5(UO2)4(SO4)4(VO5)(H2O)4, a new uranyl vanadate-sulfate from Jáchymov, Czech Republic". American Mineralogist. 99 (4): 625–632. doi:10.2138/am.2014.4681. Retrieved 13 June 2017.
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