File:Aurichalcite in gossan (probably Mexico) 2.jpg
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Summary
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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 specimen seen here is reddish-brown colored, iron hydroxy-oxide gossan having vugs with aurichalcite needles. Locality: unrecorded (but probably Mexico; if so, possibly from the Ojuela Mine, Mapimí, northeastern Durango State, northern Mexico; the Ojuela Mine has an oxidized carbonate replacement deposit) Photo gallery of aurichalcite: www.mindat.org/gallery.php?min=422 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/51605012920/ |
| 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@N05/51605012920. It was reviewed on 19 October 2021 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 | 14:46, 19 October 2021 | | 3,513 × 2,291 (4.65 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51605012920/ with UploadWizard |
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