File:Wavellite 7.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 6000 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 phosphate minerals have one or more phosphate anions (PO4-3). Wavellite is a distinctive hydrous aluminum hydroxy-phosphate mineral (Al3(PO4)2(OH)3·5H2O). It has a nonmetallic, vitreous luster, usually a white to green color, a hardness of 3.5 to 4, and usually occurs as long, radiating needles that form fracture-filling circular crusts or cavity-filling, three-dimensional, subspherical masses. Photo gallery of wavellite: www.mindat.org/gallery.php?min=4250 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/53647702727/ |
| Author | James St. John |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/53647702727. It was reviewed on 14 April 2024 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 | |
|---|---|---|---|---|---|
| current | 09:39, 14 April 2024 | | 2,119 × 1,308 (1.66 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53647702727/ with UploadWizard |
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