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A Geoscience Digital Image Library

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TitleCumengite with phosgenite and atacamite from Boleo, Mexico
DescriptionThis sample contains vein-like portions of green, brown, and blue minerals. The green mineral is atacamite, Cu2Cl(OH)3. The brown mineral is phosgenite, Pb2CO3Cl2. The blue minerals is cumengite, Pb21Cu20Cl42(OH)40. These are all secondary minerals that form by oxidation of galena and other ore minerals. This label on the top surface is about 3 cm across.
LocationMexico. Near Boleo.
PhotographerShannon Heinle. 2001-03-21.
CollectionUniversity of North Dakota Mineralogy Collection #323.
Key wordscumengite, phosgenite, atacamite, Mexico
Tech details1006 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number216