Delvauxite
Delvauxite, also known as borickite, is a yellow to brown to dark brown amorphous mineral, sometimes forming a botryoidal mass.[2] Its chemical formula is CaFe
4(PO
4,SO
4)
2(OH)
8•(4-6)H
2O.[3] and it may sometimes form stalactites.
| Delvauxite | |
|---|---|
| General | |
| Category | Phosphate minerals |
| Formula (repeating unit) | CaFe 4(PO 4,SO 4) 2(OH) 8•(4-6)H 2O |
| IMA symbol | Dvx[1] |
| Identification | |
| Color | Yellow to brown to dark brown |
It was first described in 1838 by Belgian geologist André Dumont and dedicate to chimist Charles Delvaux de Fenffe (1782–1863) who first analysed its chemical composition.[2] It was found in Bernau, Liege, Belgium and Stredocesky, Czech Republic.[3]
References
- Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- http://www.webmineral.com/data/Delvauxite.shtml Webmineral
- http://rruff.geo.arizona.edu/doclib/hom/delvauxite.pdf Handbook of Mineralogy
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