Castellaroite
Castellaroite is a rare arsenate mineral with formula Mn3(AsO4)2•4H2O. It is related to the phosphate mineral metaswitzerite. Castellaroite is monoclinic, with space group P21/n. The other natural manganese arsenate hydrate is manganohörnesite, which is an octahydrate.[1][2][3]
| Castellaroite | |
|---|---|
 A close up picture of the mineral | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | Mn3(AsO4)2•4H2O |
| IMA symbol | Ctr |
| Identification | |
| Color | Colorless |
| Luster | Vitreous, Silky |
| Specific gravity | 3.14 |
References
- Kampf, A.R., Cámara, F., Ciriotti, M.E., Nash, B.P., Balestra, C., and Chiappino, L., 2015. Castellaroite, IMA 2015-071. CNMNC Newsletter No. 28, December 2015, 1862; Mineralogical Magazine 79, 1859–1864
- "Castellaroite: Castellaroite mineral information and data". Mindat.org. Retrieved 2016-03-04.
- "Manganohörnesite: Manganohörnesite mineral information and data". Mindat.org. Retrieved 2016-03-04.
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