2.05" Cobaltaustinite on Roselite Crystals - Aghbar Mine, Morocco

This is a beautiful association of green cobaltaustinite aggregates that formed over roselite crystals and cobalt-bearing dolomite, collected from the Aghbar Mine in the Drâa-Tafilalet Region of Morocco. Small calcite crystals can be seen within a cavity along one side of the specimen.

Dolomite is an anhydrous carbonate mineral composed of calcium magnesium carbonate (CaMg(CO3)2).

The mineral dolomite crystallizes in the trigonal-rhombohedral system. It forms white, tan, gray, or pink crystals. Dolomite is a double carbonate, having an alternating structural arrangement of calcium and magnesium ions. It does not rapidly dissolve in dilute hydrochloric acid as calcite does. Crystal twinning is common.

Dolomite was first described by Carl Linnaeus in 1768, and in 1791 it was described as a rock by the French naturalist and geologist Déodat Gratet de Dolomieu. He first recognized the material in buildings of the old city of Rome, and later as samples collected in the mountains known as the Dolomite Alps of northern Italy.


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DETAILS
SPECIES
Cobaltaustinite, Roselite, Calcite & Dolomite var. Cobalt Dolomite
LOCATION
Aghbar Mine, Aghbar, Agdz Cercle, Zagora Province, Drâa-Tafilalet Region, Morocco
SIZE
2.05 x 1.8"
CATEGORY
ITEM
#184176