File:Skutterudite-calcite (vein in a fault system in the Bou Azzer-El Graara Ophiolite; Tamdrost Mine, Bou Azzer Mining District, Morocco) 3.jpg
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| Description |
English: Skutterudite-calcite from Morocco.
Silvery gray = skutterudite Whitish-gray = calcite 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 arsenide minerals contain one or more arsenide anions (As-3). The arsenides are usually considered together with the sulfide minerals, the sulfarsenide minerals, and the telluride minerals. Skutterudite is an uncommon cobalt-nickel arsenide mineral, (Co,Ni)As3. Skutterudite has a metallic luster, bright silvery color, black streak, no cleavage, moderate hardness (H = 5.5 to 6), and moderately high density. It can be an important ore mineral of cobalt and nickel, and is typically found in hydrothermal veins. The sample seen here is from a cobalt-nickel mineralized vein in a fault system within the Bou Azzer-El Graara Ophiolite of Morocco. The ophiolite complex is Proterozoic in age, but the skutterudite mineralization postdates the host rocks. Locality: Tamdrost Mine, Bou Azzer Mining District, 30 km south of Tazenakht, central Anti-Atlas Mountains, central Morocco Photo gallery of skutterudite: www.mindat.org/gallery.php?min=3682 |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/50713762396/ |
| 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@N05/50713762396. It was reviewed on 14 December 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 19:37, 14 December 2020 | | 2,047 × 1,993 (2.82 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50713762396/ with UploadWizard |
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