2.4" Chalcopyrite & Dolomite Crystal Cluster - Missouri

This is a small specimen containing an aggregation of dolomite crystals that are peppered with colorful chalcopyrite crystals. This mineral association was collected from Reynolds County, Missouri.

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
Chalcopyrite & Dolomite
LOCATION
Reynolds County, Missouri
SIZE
2.4" long, 1.4" wide
CATEGORY
ITEM
#73845