Auction Win: Aurichalcite
Pickup available at Crystal Castle
Usually ready in 24 hours
Details
Locality: Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico
Size: Small Cabinet - 8 × 5.2 × 3.4 cm
This piece features bright and brilliant blue, acicular Aurichalcite crystals, on a dark matrix.
Aurichalcite is a soft, monoclinic copper-zinc carbonate hydroxide with the formula (Zn,Cu)5(CO3)2(OH)6. Th. Böttger named it in 1839 after aurichalcum, the ancient Latin term for brass, reflecting its copper and zinc content. Its pale blue-green color commonly forms delicate crusts and feathery crystal tufts.
Ojuela Mine lies near Mapimí in Durango, Mexico, a historic group of mines first discovered in 1660 and renowned for its oxidized zinc- and arsenic-rich mineralization. It is world famous for exceptional adamite, particularly lemon-yellow wheel and ball aggregates on reddish-brown limonite, and has also produced hemimorphite, scorodite, calcite, and other colorful secondary minerals. The mine is the type locality for the rare zinc-iron arsenates ojuelaite and mapimite, adding special significance for collectors of species and type-locality material.
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