File:Peloidal phosphorite (Phosphoria Formation, mid-Permian; Simplot Mine, Bingham County, southeastern Idaho, USA) (8514036374).jpg
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[edit]DescriptionPeloidal phosphorite (Phosphoria Formation, mid-Permian; Simplot Mine, Bingham County, southeastern Idaho, USA) (8514036374).jpg |
Peloidal phosphorite from the Permian of Idaho, USA. (4.6 centimeters across at its widest) This scarce rock has economic value - it’s a phosphate ore. It's from the most famous phosphorite unit in America, the Phosphoria Formation. This unit is mined extensively in the Southeast Idaho Phosphate District. Phosphate and elemental phosphorus derived from processing of phosphorite rocks are used to make agricultural fertilizers and industrial chemicals. Phosphorites are calcium phosphate-rich sedimentary rocks, generally considered to have >15-20% phosphate content. Texturally, phosphorites can be obviously granular, with fossil fragments or oolites or peloids or lithic fragments, or they can be composed of extremely fine-grained, phosphate-rich mud. Compositionally, the phosphate component in phosphorites is principally a mix of apatite minerals: chlorapatite (Ca5(PO4)3Cl), fluorapatite (Ca5(PO4)3F), hydroxyapatite (Ca5(PO4)3OH)), and carbonate fluorapatite (Ca10(PO4,CO3)6F2-3). Phosphorites are generally marine sedimentary rocks. They range in age from Precambrian to Holocene. In modern oceans, they tend to occur along the eastern margins of some ocean basins where deep-water upwelling occurs under areas of high biologic productivity. Stratigraphy: Phosphoria Formation, Roadian Stage to Wordian Stage, lower Guadalupian Series, mid-Permian Locality: Simplot Mine, Southeast Idaho Phosphate Mining District, southern Bingham County, southeastern Idaho, USA |
Date | |
Source | Peloidal phosphorite (Phosphoria Formation, mid-Permian; Simplot Mine, Bingham County, southeastern Idaho, USA) |
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@N05/8514036374 (archive). It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 December 2019
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current | 01:29, 6 December 2019 | 1,344 × 799 (738 KB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Width | 1,344 px |
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Height | 799 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 700 dpi |
Vertical resolution | 700 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 18:26, 17 September 2018 |
Exif version | 2.21 |
Color space | sRGB |
Unique ID of original document | 675F1803C7F684F6A524A220C75B9E86 |
Date and time of digitizing | 14:19, 17 September 2018 |
Date metadata was last modified | 14:26, 17 September 2018 |
IIM version | 29,736 |