Category Sulfate Crystal system Monoclinic | Formula
(repeating unit) CuZn(SO4)2 Space group P21/n | |
Crystal class Prismatic (2/m)
(same H-M symbol) Unit cell a = 4.81, b = 8.48,
c = 6.76 [Å], β = 93.04° (approximated) | ||
Hermannjahnite is a rare sulfate mineral with the relatively simple formula CuZn(SO4)2. It is one of many fumarolic minerals discovered on the Tolbachik volcano.
Relation to other minerals
Hermannjahnite is a zinc-analogue of dravertite - another mineral from prolific Tolbachik. Minerals somewhat chemically similar to hermannjahnite include ktenasite and christelite.
References
Hermannjahnite Wikipedia(Text) CC BY-SA