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Summary
DescriptionAuriferous brecciated quartz-adularia rhyolite (Sleeper Rhyolite Gold Ore, Nevada) 1 (14719259472).jpg |
High-grade gold ore (bonanza-grade gold ore) (field of view ~10.5 cm across) from the Sleeper Open-Pit Mine (section 21, T40N, R35E), eastern side of Sod House Road, south of Rt. 140, northwestern margin of the Slumbering Hills, eastern margin of Desert Valley, northwest of the town of Winnemucca, central Humboldt County, northern Nevada, USA (41° 20’ 24” North, 118° 02” 58” West). Geology - auriferous quartz-adularia rhyolite (some consider this rock to be a latite). Native gold (Au) occurs in this rock as colloform bands, partially replaces breccia clasts, and also disseminated in the matrix. Published research indicates that Sleeper Mine rocks represent an ancient epithermal gold deposit (hot springs gold deposit), formed by volcanism during Basin & Range extensional tectonics. Age - the Sleeper Rhyolite dates to 16.3-16.5 million years (latest Early Miocene), and the gold mineralization dates to about 14.3-15.8 million years (during the early Middle Miocene). |
Date | |
Source | Auriferous brecciated quartz-adularia rhyolite (Sleeper Rhyolite Gold Ore, Nevada) 1 |
Author | James St. John |
Other versions | Also see File:Auriferous brecciated quartz-adularia rhyolite (Sleeper Rhyolite Gold Ore, Nevada) 2 (14739423003).jpg |
Licensing
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This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/14719259472. 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
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Items portrayed in this file
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creator
some value
copyright status
copyrighted
copyright license
Creative Commons Attribution 2.0 Generic
inception
13 February 2007
source of file
file available on the internet
media type
image/jpeg
checksum
58c2779fe8730729efe663d0fabc3e10c10ecc87
data size
2,946,442 byte
height
2,000 pixel
width
3,008 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:16, 30 July 2014 | ![]() | 3,008 × 2,000 (2.81 MB) | Tillman | Transferred from Flickr via Flickr2commons |
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Metadata
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Orientation | Normal |
---|---|
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 15:25, 13 February 2007 |
Color space | Uncalibrated |
Image width | 3,008 px |
Image height | 2,000 px |
Date and time of digitizing | 06:15, 13 February 2007 |
Date metadata was last modified | 10:25, 13 February 2007 |
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