AUSSIE ATACAMITE SPECIMEN
Aussie Atacamite Specimen, deep forest green in colour with good crystal coverage. This piece is a good example of material from this location. A solid specimen with deep green colour. My photos do no justice for this piece.
Mount Gunson, Pernatty, South Australia, Australia.
6.7cm x 4.9cm x 2.6cm, 126g.
Copper Chloride Hydroxide
Atacamite is an unusual and attractive halide mineral. It is polymorphous with two other minerals, paratacamite and botallackite. A polymorph is a mineral that shares the same chemistry with other minerals but has a different crystal structure. These three minerals are members of the Oxy halides Subclass. This subclass of the halide minerals is unique in possessing oxygens and hydroxides in their chemistries.
Formed in an arid climate where copper minerals are exposed to oxidation. The Atacama Desert, from where atacamite gets its name, is one of the driest places in the world. Deep green in colour and often associated with other colorful minerals. Associated minerals chyrsocolla, brochantite, pseudomalachite, connellite, linarite, caledonite, libethenite, cornetite, cuprite and malachite. Some of these specimens can be quite beautiful, with a combination of blue, green, and red hues. Atacamite is a wonderful and interesting addition to your collection.