Apjohnite
A variety of Minerals
What is Apjohnite?
Apjohnite is a manganese aluminum sulfate mineral with the chemical formula MnAl2(SO4)4·22H2O. It was named after Trinity College Dublin professor James Apjohn. Its type locality is Maputo Province, Mozambique.
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Apjohnite Localities Map
See where Apjohnite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Colourless, white, light pink, light yellow, light green.
- Hardness (Mohs)
- 1.5 - 2
- Density
- 1.78 g/cm³
Chemical Properties
- Chemical Formula
- Mn2+Al2(SO4)4 · 22H2O
- Elements
- Al, H, Mn, O, S
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