https://www.mineral-bosse.de
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Gehlenite - Er-Rissani, Cercle

Collectors Summary

Chemical Formula Ca2Al(AlSi)O7
Color braun, farblos, grünlich, grau, gelb
Streak color weiß
Hardness (Mohs) 5.5
Solubility +++ HCl, HF
Crystal System tetragonal, P421m