File:Cobaltite (18601461713).jpg
![File:Cobaltite (18601461713).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Cobaltite_%2818601461713%29.jpg/765px-Cobaltite_%2818601461713%29.jpg?20150715220759)
Original file (1,313 × 1,029 pixels, file size: 1.49 MB, MIME type: image/jpeg)
Captions
Captions
Summary
[edit]DescriptionCobaltite (18601461713).jpg |
Cobaltite mixed with calcite. (4.3 cm across at its widest) Silvery-colored material = cobaltite Whitish-grayish material = calcite (CaCO3 - calcium carbonate) 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. Cobaltite is an important cobalt ore mineral having the formula (Co,Fe)AsS - cobalt iron arsenic sulfide. It's essentially arsenopyrite with cobalt. Cobaltite has a metallic luster, a bright silvery color, a dark gray streak, and is moderately hard (H = 5.5). It can form cubic and pyritohedral crystals (the same crystal forms as pyrite), but cobaltite has cleavage, unlike pyrite. It frequently occurs as finely granular masses mixed with other minerals (see below). Cobaltite occurs in some hydrothermal veins, and in some contact metamorphic rocks. Photo gallery of cobaltite: www.mindat.org/gallery.php?min=1093 |
Date | |
Source | Cobaltite |
Author | James St. John |
Licensing
[edit]![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
- 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@N05/18601461713. It was reviewed on 15 July 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
15 July 2015
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 22:07, 15 July 2015 | ![]() | 1,313 × 1,029 (1.49 MB) | Natuur12 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Orientation | Normal |
---|---|
Horizontal resolution | 750 dpi |
Vertical resolution | 750 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 23:40, 27 June 2015 |
Y and C positioning | Centered |
Exif version | 2.21 |
Meaning of each component |
|
Supported Flashpix version | 1 |
Color space | sRGB |
Date and time of digitizing | 19:38, 27 June 2015 |
Date metadata was last modified | 19:40, 27 June 2015 |
Unique ID of original document | 8395504AA19CCE763C8CDB4600EC730F |