Apjohnite
(repeating unit)Mn2+Al2(SO4)4·22H2O IMA symbol API Identification Color Colourless, white, light pink, light yellow, light green Mohs scale hardness 1.5-2 Luster 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)
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
External links
- Apjohnite data sheet on Webmineral
- Apjohnite on the Handbook of Mineralogy
- v
- t
- e