Natrophilite | |
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Natrophilite, as thin coatings and fracture fillings, from Branchville, Redding, Fairfield County, Connecticut, US
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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 transparenttotranslucent. It is not radioactive. Natrophilite is rated 4.5 to 5 on the Mohs Scale.
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Phosphates |
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