Abhurite

  
This mineral is formed from the reaction of pure tin with sea water, and has exclusively been associated with tin ingots from shipwrecks. SS Cheerful was shipwrecked on 20 July 1885 and carried 28 and 56 pound ingots of cornish tin bearing the marks of the smelting houses of Treloweth - St Erth, Carnvedras - Truro, Trethellan - Truro, and Tamar - Bere Ferres. The wreck lies in 35 fathoms of water, 18 miles NNW of St Ives.
Origin: SS Cheerful wreck site, St Ives District, Cornwall, England, UK
Sample size: 4.8 x 3.0 x 1.7 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

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