12hedwns ((CHALCANTHITE)), $10 MINIMUM BID, Viking Copper Mine, Casa Grande, Arizona, 6 x 3.5 x 3 cm, Miniature | |
a specimen with blue crystals of Chalcanthite. These are water soluble. There are alot of man grown Chalcanthite crystals grown in Poland on the market. Here is a nice specimen with crystals that are naturally formed. |