Natrophilite
Natrophilite | |
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![]() Natrophilite, as thin coatings and fracture fillings, from Branchville, Redding, Fairfield County, Connecticut, US | |
General | |
Category | Phosphate mineral |
Formula (repeating unit) | NaMnPO4 |
IMA symbol | Ntp[1] |
Strunz classification | 8.AB.10 |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Space group | Pnam |
Identification | |
Color | Deep yellow to light yellow |
Cleavage | Distinct/ good |
Fracture | Irregular/ uneven |
Tenacity | Brittle |
Mohs scale hardness | 4+1⁄2 – 5 |
Luster | Sub-vitreous, greasy |
Streak | White |
Diaphaneity | Transparent, translucent |
Specific gravity | 3.41 g/cm3 |
Natrophilite is a mineral with the chemical formula NaMnPO4. In a pure form it has a yellow coloration. Its crystals are orthorhombic to dipyramidal. It is transparent to translucent. It is not radioactive. Natrophilite is rated 4.5 to 5 on the Mohs Scale.
References
[edit]- ^ 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.