HEMIMORPHITE
Hemimorphite is a hydrous zinc hydroxysilicate mineral
(Zn4(Si2O7)(OH)2·H2O).
It is a secondary mineral found associated with zinc-rich rocks that have been
exposed to surface or near-surface weathering & oxidation.
Hemimorphite from a zinc mine in Lehigh County, Pennsylvania, USA (CM public
display, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA).
Hemimorphite from Wenshan, Yunnan Province, southwestern China (Dwyer Mercer County
District Library #150-280, Celina, Ohio, USA).