File:Turquoise (Blue Moon Mine, Candelaria Hills, west of Tonopah, Nevada, USA) 1.jpg
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Summary[edit]
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| Description |
English: (polished cabochon; ~2.6 centimeters across at its widest)
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 5600 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 all contain one or more phosphate anions (PO4 -3). Turquoise is a hydrous copper aluminum hydroxy-phosphate mineral, CuAl6(PO4)4(OH)8·4H2O. It is a secondary mineral that forms near the surface, usually near copper deposits. The color ranges from bluish to bluish-green to greenish and the hardness is 5 to 6 on the Mohs Scale. Crystals are rare - turquoise usually forms very fine-grained masses. Locality: Blue Moon Mine, Candelaria Hills, west of Tonopah, western Nevada, USA Photo gallery of turquoise: www.mindat.org/gallery.php?min= 4060 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/50834783333/ |
| Author | James St. John |
Licensing[edit]
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- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
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- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/50834783333. It was reviewed on 14 January 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 | |
|---|---|---|---|---|---|
| current | 19:19, 14 January 2021 | | 2,383 × 1,511 (2.01 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50834783333/ with UploadWizard |
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