File:Calaverite (AuTe2) in purple fluorite vein, Cripple Creek Diatreme (Early Oligocene, 32 Ma), central Colorado 2 (14550182349).jpg
Original file (1,295 × 914 pixels, file size: 1.99 MB, MIME type: image/jpeg)
Captions
DescriptionCalaverite (AuTe2) in purple fluorite vein, Cripple Creek Diatreme (Early Oligocene, 32 Ma), central Colorado 2 (14550182349).jpg |
Calaverite (AuTe2) (gold-colored) in a purple fluorite vein, from the Cripple Creek Diatreme (Early Oligocene, 32 Ma) of central Colorado, USA. The Cripple Creek Gold District of central Colorado, USA is famous for its unusual gold and silver mineralization. Precious metal mineralization occurs in the Cripple Creek Diatreme, the root zone of a deeply eroded volcano dating to the Early Oligocene (32 Ma). The dominant lithology at Cripple Creek is the scarce igneous rock phonolite, an alkaline, intermediate, extrusive igneous rock. Cripple Creek gold can be found in its native state (Au), but it typically occurs in the form of gold telluride minerals (for example, sylvanite - (Au,Ag)2Te4, calaverite - AuTe2, petzite - Ag3AuTe2, krennerite - (Au,Ag)Te2, and nagyagite - Pb5Au(Sb,Bi)Te2S6). Silver also occurs in some Cripple Creek minerals, including sylvanite, petzite, krennerite, hessite - Ag2Te, tennantite - (Cu,Ag,Fe,Zn)12As4S13, acanthite - Ag2S, and tetrahedrite - (Cu,Fe,Ag,Zn)12Sb4S13. |
Date | |
Source | Calaverite (AuTe2) in purple fluorite vein, Cripple Creek Diatreme (Early Oligocene, 32 Ma), central Colorado 2 |
Author | James St. John |
Licensing
[edit]- 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@N05/14550182349. It was reviewed on 1 August 2014 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
1 August 2014
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 22:44, 31 July 2014 | 1,295 × 914 (1.99 MB) | Tillman (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.
Pixel composition | RGB |
---|---|
Orientation | Normal |
Horizontal resolution | 1,600 dpi |
Vertical resolution | 1,600 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 17:55, 24 July 2014 |
Color space | Uncalibrated |
Image width | 1,295 px |
Image height | 914 px |
Date and time of digitizing | 13:55, 24 July 2014 |
Date metadata was last modified | 13:55, 24 July 2014 |