Minerals / Hydrozincite, Pencurig mine. (CWO)

Hydrozincite, Zinc bloom, Marionite, Zn5(CO3)2(OH)6. Pencurig mine, Dylife, Central Wales Orefield. The specimens were recovered from the floor of an adit, perhaps taking about 100 years to form since closure of the mine. Hydrozincite is also known as zinc bloom or marionite, and is a zinc carbonate. These specimens have a substantial coating, which is very white, and vitreous in appearance. 

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