Osarizawaite is a greenish yellow
sulfate mineral
The sulfate minerals are a class of minerals that include the sulfate ion () within their structure. The sulfate minerals occur commonly in primary evaporite depositional environments, as gangue minerals in hydrothermal veins and as secondary mine ...
with the
chemical formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbol ...
:
Pb Cu Al2(
S O4)
2(O
H)
6. It has
rhombohedral
In geometry, a rhombohedron (also called a rhombic hexahedron or, inaccurately, a rhomboid) is a three-dimensional figure with six faces which are rhombi. It is a special case of a parallelepiped where all edges are the same length. It can be us ...
crystals.
[Fleischer, Michael & Mandarino, Joseph, "Glossary of Mineral Species", The Mineralogical Record, 1991]
It was first described in 1961 for an occurrence in the oxidized zone of the Osarizawa mine,
Akita Prefecture,
Honshu Island,
Japan.
[
]
References
Alunite group
Sulfate minerals
Trigonal minerals
Minerals in space group 166
{{sulfate-mineral-stub