11btrm.nr ((COQUIMBITE, ALUNOGEN)), $15 MINIMUM BID, Javier Mine, Ayacucho Department, Peru, 5.5 x 4.5 x 3 cm, Miniature | |
From a find 10 years ago with purple lustrous crystals of Coquimbite. Coquimbite and the others are Sulphate species and hense they are water soluble. Do not wash with water. Coquimbite forms hemagonal double terminated lustrous crystals |