08340 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Ectillaenus 218g of this rare type
Yard notes & kiln story
Description
218g of this rare type of Carbonaceous Chondrite CM
Nice premaxillary Carcharodontosaurus tooth
Top quality specimen of an unidentified Crocodile species
Vilpovitsky quarry
History: (H
08340 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Ectillaenus 218g of this rare typeAzurite is one of the two basic copper carbonate minerals, the other being bright green malachite. Simple copper carbonate (CuCO3) is not known to exist in nature. Azurite has the formula Cu3(CO3)2(OH)2, with the copper cations linked to two different anions, carbonate and hydroxide. Small crystals of azurite can be produced by rapidly stirring a few drops of copper sulfate solution into a saturated solution of sodium carbonate and allowing the