File:Aurichalcite (Ojuela Mine, Durango, Mexico).jpg
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| Description |
English: A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 5700 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates.
The carbonate minerals all contain one or more carbonate (CO3-2) anions. Aurichalcite is a scarce zinc copper hydroxycarbonate mineral ((Zn,Cu)5(CO3)2(OH)6). It has a nonmetallic luster, a robin's egg blue color, and tends to form small, delicate needle-like crystals. The rock seen here is iron hydroxy-oxide gossan having a vug of pale bluish aurichalcite needles. It comes from an oxidized carbonate replacement deposit in Mexico's Ojuela Mine. Locality: Ojuela Mine, Mapimí, northeastern Durango State, northern Mexico Photo gallery of aurichalcite: www.mindat.org/gallery.php?min=422 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/31989222452/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/31989222452. It was reviewed on 14 November 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 14:03, 14 November 2022 | | 3,008 × 2,000 (1.88 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/31989222452/ with UploadWizard |
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