EEF86CD4: Mammillary/botryoidal aggregate formed by crystals of Chalcopyrite known as the 'blister copper' variety.
A true antique and a classic of English mineralogy from the collection of Colonel John Wilson Rimington and which is accompanied by an old label from the Deyrolle establishment in Paris, which we will send scanned to the buyer of the piece. The prestigious Drouot auction house of Paris auctioned the piece in 1912.
Carn Brea, Pool, Illogan, Camborne - Redruth - Saint Day District, Cornwall  England / United Kingdom

Specimen size: 2.7 × 2.1 × 1.7 cm = 1.06” × 0.83” × 0.67”