![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Gehlenite-sea65a.jpg/640px-Gehlenite-sea65a.jpg&w=640&q=50)
Gehlenite
Sorosilicate mineral / From Wikipedia, the free encyclopedia
Not to be confused with Galenite.
Gehlenite, (Ca2Al[AlSiO7]), is a sorosilicate, Al-rich endmember of the melilite complete solid solution series with akermanite.[2][3] The type locality is in the Monzoni Mountains, Fassa Valley in Trentino in Italy,[3] and is named after Adolf Ferdinand Gehlen (1775–1815) by A.J. Fuchs in 1815.[4]
Quick Facts General, Category ...
Gehlenite | |
---|---|
![]() | |
General | |
Category | Sorosilicates |
Formula (repeating unit) | Ca2Al[AlSiO7] |
IMA symbol | Gh[1] |
Strunz classification | 9.BB.10 |
Crystal system | Tetragonal |
Crystal class | Scalenohedral (42m) H-M symbol: (4 2m) |
Space group | P421m |
Identification | |
Colour | yellow-brown, green-grey, colourless |
Cleavage | Distinct/good |
Mohs scale hardness | 5–6 |
Lustre | vitreous, greasy |
Streak | white, grey-white |
Birefringence | δ = 0.010 |
Close