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