Mineral "Aurichalcite & Calcite"

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Ojuela Mine, Mapimi, Municipio de Mapimi, Durango, Mexico, private collection from Netherlands.

Aurichalcite is a carbonate mineral, usually found as a secondary mineral in copper and zinc deposits. It was first described in 1839 by Bottger who named the mineral for its zinc and copper content after the Greek όρειχαλκος, for "mountain brass" or "mountain copper", the name of orichalcum, a fabulous metal, mentioned in the legend of the mythic lost continent Atlantis. Aurichalcite is typically found as blue or green crusts or mats of tiny acicular crystals, often as feathery, tufted, druzes; more rarely it is found as columnar crystal aggregates or crusts of either lamellar aggregates or as granular aggregates. Associated minerals include: rosasite, smithsonite, hemimorphite, hydrozincite, malachite and azurite.

Mesmerizing, small-sized crystals of blue and turquoise Aurichalcite are mixed in a perfectly contrasting iron-rich (limonite) rock matrix combined with superb white calcite crystals. The condition of the sample is excellent. Age-related wear, fractures and minor cracks may appear. Dirt and dust. Size approx. 10,6cm x 8,5cm x 5,8cm. Weight c. 384g.