Zykaite
Zykaite or zýkaite is a grey-white mineral consisting of arsenic, hydrogen, iron, sulfur and oxygen with formula: Fe3+4(AsO4)3(SO4)(OH)·15(H2O).[1] This dull mineral is very soft with a Mohs hardness of only 2 and a specific gravity of 2.5. It is translucent and crystallizes in the orthorhombic crystal system.[2]
Its common include limonite, gypsum, scorodite, quartz and arsenopyrite.[2] It is found in the Czech Republic, Poland and Germany.[3]
Zykaite was first described in 1978 for an occurrence in the Safary mine, Kutná Hora, Bohemia, Czech Republic and named in honour of (born 1926), a Czech geochemist.[2][3]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Z%C3%BDkaite.jpg/220px-Z%C3%BDkaite.jpg)
Zykaite found in the Czech Republic
References[]
Categories:
- Sulfate minerals
- Arsenic minerals
- Orthorhombic minerals
- Sulfate mineral stubs