Датотека:Quartz-gold vein (Mary Ellen Mine, South Pass Mining District, Wyoming, USA).jpg
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| Opis |
English: Gold ore from Wyoming, USA. (public display, Wyoming Geological Survey, Laramie, Wyoming, USA)
Bright specks within inked circle = native gold Remainder of sample - quartz with iron oxide staining This gold ore sample is from Wyoming's Mary Ellen Mine, which targeted native gold-bearing quartz hydrothermal veins hosted in granodiorite. Mining occurred at the intersection of two veins, where native gold occurred in lenses. A 1911 report indicated that 6,600 ounces of gold had already been produced from the Mary Ellen Mine. From exhibit signage: GOLD ORE Mary Ellen Mine, South Pass District The presence of visible native gold (circled) indicates that this sample will assay >1 ounce per ton [of rock]. |
| Datum | |
| Izvor | https://www.flickr.com/photos/47445767@N05/49600118943/ |
| Autor | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49600118943 (archive). It was reviewed on 10. mart 2020. by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Datum/vreme | Minijatura | Dimenzije | Korisnik | Komentar | |
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| trenutna | 16:51, 10. mart 2020. | | 1.605 × 682 (876 kB) | Ser Amantio di Nicolao | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/49600118943/ with UploadWizard |
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