Minerals identify

Know how to recognize them

Plumbogummite

Phosphate mineral

Plumbogummite is a rare secondary lead phosphate mineral , belonging to the alunite supergroup of minerals, crandallite Some other members of this subgroup are: * Crandallite, CaAl3(PO4)2(OH)5·H2O, where calcium replaces lead * Goyazite , SrAl3(PO4)(OH)5·H2O, where strontium replaces lead * Philipsbornite , PbAl3(AsO4)2(OH)5·H2O, where the arsenate group AsO4 replaces the phosphate group PO4

Plumbogummite was discovered in 1819 and named in 1832 from the Latin "plumbum" for lead, and "gummi" for gum, in allusion to its lead content and appearance, which at times resembles coatings of gum.

Identification

Color of mineral

Blue
Grey
Green
Yellow

Mohs scale ( mineral hardness )

4

Luster ( interacts light )

Dull
Resinous

Crystal ( diaphaneity )

Trigonal