File:Stibnite (Ichinokawa Mine, Shikoku Island, Japan) 3 (18741189328).jpg
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Summary
DescriptionStibnite (Ichinokawa Mine, Shikoku Island, Japan) 3 (18741189328).jpg |
Stibnite from Japan. (Harvard Mineralogical Museum, Harvard University, Cambridge, Massachusetts, USA) 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 4900 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 sulfide minerals contain one or more sulfide anions (S-2). The sulfides are usually considered together with the arsenide minerals, the sulfarsenide minerals, and the telluride minerals. Many sulfides are economically significant, as they occur commonly in ores. The metals that combine with S-2 are mainly Fe, Cu, Ni, Ag, etc. Most sulfides have a metallic luster, are moderately soft, and are noticeably heavy for their size. These minerals will not form in the presence of free oxygen. Under an oxygen-rich atmosphere, sulfide minerals tend to chemically weather to various oxide and hydroxide minerals. Stibnite is an antimony sulfide mineral (Sb2S3). Stibnite is quite distinctive for in forming long, slender crystals. It has a metallic luster, a silvery-gray color, is fairly soft (H=2), and has a dark gray streak. Stibnite has economic value - it’s mined in several parts of the world for antimony (Sb). The most significant modern source of stibnite specimens is South China. Locality: Ichinokawa Mine, near Saijo, Ehime Prefecture, Shikoku Island, southwestern Japan Photo gallery of stibnite: www.mindat.org/gallery.php?min=3782 |
Date | |
Source | Stibnite (Ichinokawa Mine, Shikoku Island, Japan) 3 |
Author | James St. John |
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This image was originally posted to Flickr by jsj1771 at https://flickr.com/photos/47445767@N05/18741189328. It was reviewed on 27 July 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
27 July 2015
Captions
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some value
1 May 2010
3,499,966 byte
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2,200 pixel
image/jpeg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:45, 27 July 2015 | ![]() | 2,200 × 1,718 (3.34 MB) | Natuur12 | Transferred from Flickr via Flickr2Commons |
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File change date and time | 13:11, 18 June 2015 |
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Date and time of digitizing | 11:48, 1 May 2010 |
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Date metadata was last modified | 09:11, 18 June 2015 |
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