Hemimorphite
2022-07-06 18:30:44
Hemimorphite, a silicate mineral mined from upper zinc and lead ores, is a component of calamine and mainly related to zinc and ZnCO3. Therefore, they are thought to be the same kind of mineral, both of which are classified as calamine.
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In the second half of the 18th century, people found two different minerals exist in calamine and they are very similar to each other.
Silicate is the rarer of the two. Due to the semi-crystalline development of crystals, it was named as hemimorphite. This unusual form means that crystals will terminate in different shapes.
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The most common are crystalline crystals and layered structures, as well as lumpy, granular, round and renal aggregates, concentric striated or fine needlelike, fibrous or stalactite, and rare fan-shaped crystals. Some samples show strong green fluorescence under the SWUV (253.7nm) and light pale pink fluorescence under the LWUV.
