HEMIMORPHITE SPECIMEN -CHINA 113.30 CTS [MX 6892]

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HEMIMORPHITE SPECIMEN.

This is a natural untreated specimen from Yunnan prov China.

Weight 113.30 cts app

Size 46 x 21 x 17 mm app

Hemimorphite, is a sorosilicate mineral which has been mined from days of old from the upper parts of zinc and lead ores, chiefly associated with smithsonite. It was often assumed to be the same mineral and both were classed under the same name of calamine. In the second half of the 18th century it was discovered that there were two different minerals under the heading of calamine - a zinc carbonate and a zinc silicate, which often closely resembled each other.

The silicate was the more rare of the two, and was named hemimorphite because of the hemimorph development of its crystals. This unusual form, which is typical of only a few minerals, means that the crystals are terminated by dissimilar faces. Hemimorphite most commonly forms crystalline crusts and layers, also massive, granular, rounded and reniform aggregates, concentrically striated, or finely needle-shaped, fibrous or stalactitic.

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Pricing & Details

Bid Increment $1
Starting Bid $32
Auction ID 177711
Watchers 12 watching
Viewed 2,257 times
Starts 29th Jul 2021 7:00pm PDT
Ends 1st Aug 2021 3:14pm PDT

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