File:Sperrylite in platinum-copper ore (Permian-Triassic boundary time, 251 Ma; Norilsk Mining District, Krasnoyarsk, northern Siberia, Russia) 3 (19275789352).jpg
Original file (1,929 × 1,572 pixels, file size: 2.87 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]_3_(19275789352).jpg&action=edit§ion=1){kind=link}
| Description |
Sperrylite-chalcopyrite-magnetite from the Permian-Triassic transition of Siberia. (field of view 2.2 cm across) Silvery-colored = sperrylite Dark brassy-gold = chalcopyrite (CuFeS2 - copper iron sulfide) Black = magnetite (Fe3O4 - iron oxide) 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 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. Sperrylite is a very rare platinum arsenide mineral (PtAs2). Very few localities on Earth have been reported to have sperrylite. The two classic localities for this mineral are Sudbury, Ontario, Canada and the Norilsk Mining District in northern Siberia. Sperrylite has a metallic luster, a bright silvery color, a dark gray to black streak, is fairly hard (H = 6 to 7), and is quite heavy for its size. It forms crystals in the isometric system, resulting in octahedrons and octahedrons truncated by cubic forms. Geology & Age: massive Fe-Cu sulfide hosted in gabbrodolerite, lower series of differentiated layered igneous intrusion associated with hotspot-generated Siberian Traps Flood Basalts, Permian-Triassic boundary time, 251 Ma Locality: apparently from the Oktyabersky Mine, ~12 km NW of Talnakh, Norilsk Mining District, Putoran Plateau, Krasnoyarsk Territory, northern Siberia, Russia Photo gallery of sperrylite: www.mindat.org/gallery.php?min=3723 |
| Date | |
| Source | Sperrylite in platinum-copper ore (Permian-Triassic boundary time, 251 Ma; Norilsk Mining District, Krasnoyarsk, northern Siberia, Russia) 3 |
| Author | James St. John |
Licensing
[edit]_3_(19275789352).jpg&action=edit§ion=2){kind=link}
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/19275789352. It was reviewed on 15 July 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:59, 15 July 2015 | | 1,929 × 1,572 (2.87 MB) | Natuur12 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
_3_(19275789352).jpg&oldid=521240873){kind=link}