File:Barite rose (Oklahoma, USA) 6.jpg
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| Description |
English: Barite rose from Oklahoma, USA. (~4.9 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 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 sulfate minerals all contain one or more sulfate anions (SO4-2). Barite (a.k.a. baryte) is a barium sulfate mineral (BaSO4). It has a nonmetallic luster, a whitish to clearish color, is moderately soft (H=3 to 3.5), has three cleavage planes not at right angles, and is noticeably heavy for its size. Barite sometimes forms barite roses - masses of intersecting tabular crystals somewhat resembling rose flowers. The incorporated quartz sand and the reddish-brown coloration (hematite) of the specimen seen here have been acquired from its original sandstone matrix. Locality: outcrop belt of the Garber Formation, upper Lower Permian Info. at: www.ogs.ou.edu/pubsscanned/InfSeries/IS13.pdf Photo gallery of barite: www.mindat.org/gallery.php?min=549 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/51438709375/ |
| 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@N05/51438709375. It was reviewed on 13 September 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 | 17:58, 13 September 2021 | | 2,108 × 1,882 (2.77 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51438709375/ with UploadWizard |
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