Lindgrenite is an uncommon copper molybdate mineral with formula: Cu<sub>3</sub>(MoO<sub>4</sub>)<sub>2</sub>(OH)<sub>2</sub>. It occurs as tabular to platey monoclinic green to yellow green crystals.
It was first described in 1935 for an occurrence in the Chuquicamata Mine, Antofagasta, Chile, and named for SwedishâÂÂAmerican economic geologist Waldemar Lindgren (1860âÂÂ1939) of the Massachusetts Institute of Technology.
Lindgrenite occurs in the oxidized portions of copperâÂÂmolybdenum bearing sulfide ore deposits. Associated minerals include antlerite, molybdenite, powellite, brochantite, chrysocolla, iron oxides and quartz.