Chemistry:Apjohnite
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Apjohnite | |
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Apjohnite (white) found with ilesite | |
General | |
Category | Mineral |
Formula (repeating unit) | Mn2+Al2(SO4)4·22H2O |
Identification | |
Color | Colourless, white, light pink, light yellow, light green |
Mohs scale hardness | 1.5-2 |
|re|er}} | Silky |
Streak | White |
Diaphaneity | Transparent, Translucent |
Specific gravity | 1.78 - 1.81 |
Density | 1.78 - 1.81 g/cm3 (Measured) 1.836 g/cm3 (Calculated) |
Apjohnite (IMA symbol: Apj[1]) is a manganese aluminium sulfate mineral with the chemical formula Mn2+Al2(SO4)4·22H2O. It was named after Trinity College Dublin professor James Apjohn. Its type locality is Maputo Province, Mozambique.[2]
References
- ↑ Warr, L.N. (2021). "IMA-CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
- ↑ Apjohnite on mindat.org
External links
- Apjohnite data sheet on Webmineral
- Apjohnite on the Handbook of Mineralogy
Original source: https://en.wikipedia.org/wiki/Apjohnite.
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