Name: Cassiterite
Brand: Weinrich Minerals
Price: 100 USD
Availability: InStock

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Updated 22h ago

Cassiterite

Polberro Mine was a historic tin and copper mine near St Agnes on the north Cornwall coast, worked as early as the 1700s and extensively in the 19th century. It was an amalgamation of many smaller workings, including Wheal Kine, Wheal Pell, Turnavore, Prosper, Park, Squidler and others, covering a large area north of Trevaunance Cove. During its main period of activity from about 1837 to 1895 the mine employed hundreds of workers and at times produced around 30 tons of tin ore per month, including very pure ore known locally as diamond tin. In 1846 Queen Victoria visited the site, after which it became known as Royal Polberro Consols. Polberro and associated workings went through periods of closure and reopening, with a final reworking in the 1930s under Polberro Tin Ltd, but the mine finally closed in 1941, ending commercial mining in the St Agnes area. Today only ruins and landscape scars remain. The specimen shows lustrous black crystals to 0.3 cm in size across the top of matrix. Collected in 2008 from the dumps of the mine.

$100.00