Intense green paratacamite crystals from a Chilean mine where the species has been well identified. The crystals are prismatic, sharp, lustrous, and transparent. A very good specimen for the species. 96vu

Rich clusters of sharp schwartzembergite orange lenticular crystals. It is a very rare lead cloroiodate, Pb₅H₂(IO₂)O₄Cl₃. Under magnification we can see some percylite bluish aggregates. It is one of the specimens those ed Dr. Joan Viñals (1951-2013) brought and studied from his trip to Chile in beginning of 2000's. This specimen comes from the E. Nicolau collection (Barcelona).

Reserved

Tamarugite is a rare sodium aluminium sulphate with the formula NaAl(SO₄)₂·6H₂O, which usually appears as white crusts made up of tiny crystals. In this specimen it is accompanied by kröhnkite, another sodium sulphate but this one with copper Na₂Cu(SO₄)₂·2H₂O, in the form of blue-green, translucent elongated crystals. Both rare species!
NOTE: These specimens are natural, formed in a mine, and have nothing to do with those from mine water rafts that were sold years ago at exorbitant prices.

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Tamarugite is a rare sodium aluminium sulphate with the formula NaAl(SO₄)₂·6H₂O, which usually appears as white crusts made up of tiny crystals. In this specimen it is accompanied by kröhnkite, another sodium sulphate but this one with copper Na₂Cu(SO₄)₂·2H₂O, in the form of bluish, transparent and brilliant crystals. Rare species!
NOTE: These specimens are natural, formed in a mine, and have nothing to do with those from mine water rafts that were sold years ago at exorbitant prices.

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Rich group of orange lenticular crystals of schwartzembergite, analyzed by SEM-EDS, accompanied by seeligerite, of a light yellow color. Both are rare lead cloroiodates. It is one of the several specimens those ed Dr. Joan Viñals (1951-2013) brought and studied from his trip to Chile in first years of 2000's. With the E. Kucera (Barcelona) label.

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