Purpurite is a mineral,
manganese
Manganese is a chemical element with the Symbol (chemistry), symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of ...
phosphate
In chemistry, a phosphate is an anion, salt, functional group or ester derived from a phosphoric acid. It most commonly means orthophosphate, a derivative of orthophosphoric acid .
The phosphate or orthophosphate ion is derived from phosph ...
, MnPO
4 with varying amounts of iron depending upon its source. It occurs in color ranges from brownish black via purple and violet to dark red.
[
Purpurite forms a series with the iron-bearing endmember heterosite, FePO4.][
]
See also
*Manganese violet
Manganese violet is the common name for ammonium manganese(III) pyrophosphate, an inorganic compound composed of ammonium (), manganese in the +3 oxidation state, and the pyrophosphate anion (). It is prepared by heating a mixture of manganese(III ...
References
Manganese(III) minerals
Iron(III) minerals
Phosphate minerals
Orthorhombic minerals
Minerals in space group 53
{{Phosphate-mineral-stub