File:Turquoise (Ithaca Peak Mine, near Kingman, Arizona, USA) 2.jpg
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Summary
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| Description |
English: (crack surface; ~3.45 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. The turquoise sample seen here is from a polymetallic "porphyry copper" deposit in Arizona. Locality: Ithaca Peak Mine, north-northwest of the town of Kingman, Mohave County, northwestern Arizona, USA (35° 21' 48.56" North latitude, 114° 08' 42.16" West longitude) See locality-specific info. at: www.mindat.org/loc-3361.html Photo gallery of turquoise: www.mindat.org/gallery.php?min= 4060 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/51102696680/ |
| 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@N05/51102696680. It was reviewed on 9 April 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 | 22:38, 9 April 2021 | | 2,212 × 1,277 (1.7 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51102696680/ with UploadWizard |
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