Category Phosphate minerals Strunz classification 8.BL.05 Crystal system Trigonal | Formula(repeating unit) PbFe3[(OH)6:SO4:PO4] Dana classification 43.4.1.2 | |
Crystal class Ditrigonal pyramidal (3/m)(same H-M symbol) | ||
Corkite is a phosphate mineral in the beudantite subgroup of the alunite group. Corkite is the phosphate analogue of beudantite and with it, a complete solid solution range exists. Corkite will also form a solid solution with kintoreite.
Corkite is named after County Cork, Ireland; the location where the first notable amount was discovered in 1869. Like many of the other minerals in the beudantite group, corkite is a relatively uncommon, secondary mineral that occurs in oxidation zones near hydrothermal base metal deposits. It occurs associated with pyromorphite, malachite, plumbojarosite, limonite and quartz.
References
Corkite Wikipedia(Text) CC BY-SA