Atacama Region, Chile

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Acanthite : Ag₂S
	Copiapó Province, Atacama Region, Chile Good miniature with small crystals, which combine the cube and octahedron, and have well-defined faces and edges. Actually it is very difficult to obtain samples from this classic locality. Copiapó, Atacama, Chile. Specimen size: 1.6 x 1.4 x 1.1 cm Main crystal size: 0.3 x 0.2 cm With handwritten label from the Folch Collection
© fabreminerals.com	Photo ID: 75380 View Count: 538
Acanthite : Ag₂S
	Copiapó Province, Atacama Region, Chile Very aerial group of complex crystals, very rich with faces and considerably bright. Although on the label the only locality is Chile, we can presume, by its characteristics, it is from Copiapó area. Copiapó, Atacama, Chile Specimen size: 2.7 x 1.3 x 0.8 cm Main crystal size: 0.7 x 0.4 cm With handwritten label from the Folch ...
© fabreminerals.com	Photo ID: 101240 View Count: 382
Acanthite : Ag₂S, Calcite : CaCO₃
	Chañarcillo, Copiapó Province, Atacama Region, Chile Acanthite crystals on calcite. At one time this specimen was in the collection of David Wilber. Scale at bottom of image is one inch with a rule at one cm.
	Photo ID: 215985 View Count: 112
Acanthite : Ag₂S
	Chañarcillo, Copiapó Province, Atacama Region, Chile Acanthite. Specimen in the Karabacek collection at Harvard #93075. This long closed locality has produced many good acanthite specimens, but today they are rarely offered for sale. Scale at bottom of image is one inch with a rule at one cm.
	Photo ID: 215983 View Count: 104
Adamite : Zn₂(AsO₄)(OH)
	Chañarcillo, Copiapó Province, Atacama Region, Chile A group of fine mint green to emerald green Adamite (3 mm. across) laying on Goethite-Limonite. Not visible, there are also some Smithsonite rice-like xx and some Calchedony spheres. This sample shows two different Adamite colours, the mint green and on the other corner a colourless smooth wine. An old sample that has been mined many decades ago ...
© maurizio dini	Photo ID: 245227 View Count: 34
Adamite (Var: Cuprian Adamite) : (Zn,Cu)₂AsO₄OH, Austinite : CaZn[OH\|AsO₄]
	Veta Negra Mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile Cuprian adamite xls on austinite. Field of view: 3 mm Photo and collection Antonio Borrelli
© Antonio Borrelli	Photo ID: 67622 View Count: 380
Alumopharmacosiderite : KAl₄[(OH)₄\|(AsO₄)₃] · 6-7H₂O, Mansfieldite : AlAsO₄·2H₂O
	Maria Catalina mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile Width of field 0.5 mm. Collection and photo Jesse Crawford. Compositing software CombineZP. Equipment: Nikon D-100 digital camera on a homemade microscope. Cubes of alumopharmacosiderite on a matrix of mansfieldite. The rounded structures in the lower right corner are mansfieldite.
© 2008 Jesse Crawford	Photo ID: 204778 View Count: 100
Aragonite : CaCO₃, Arseniosiderite : Ca₂Fe³⁺₃[O₂\|(AsO₄)₃] · 3H₂O
	Veta Negra Mine, Pampa Larga district, Tierra Amarilla, Copiapó Province, Atacama Region, Chile 3 cm xls of Aragonite with Arseniosiderite on matriz; Veta Negra mine, Pampa Larga, Tierra Amarilla, Copiapo, Atacama region-Chile;field of view; 5x5-foto & coll by A.Molina
	Photo ID: 104847 View Count: 227
Aragonite : CaCO₃, Chrysocolla : (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O, Quartz : SiO₂
	Manto Tres Gracias Mine, Diego de Almagro, El Salado, Chañaral Province, Atacama Region, Chile White yellowish Aragonite crystal cluster (up to 2 cm) on drusy Quartz coated Chrysocolla in matrix. Rare something different than the Quartz, the Chrysocolla and the Malachite. Terry Szenics specimen, now in my personal Collection. Photo Simone Citon.
© Simone Citon	Photo ID: 172452 View Count: 118
Aragonite : CaCO₃
	Manto Cuba Mine, San Pedro de Cachiyuyo District, Inca de Oro, Chañaral Province, Atacama Region, Chile 20.2 x 9.3 x 7.9 cm. This is a beautiful specimen. The surreal blue color looks fake, painted. However, the color is actually due to copper inclusions. Note the obvious presence of a rare green mineral in small, sharp crystals: probably libethenite or brochantite. Both are found at the mine, and I have a sample sent out for analysis. Ex. Academy ...
© Rob Lavinsky	Photo ID: 202012 View Count: 66