File:Chalcopyrite-pyrite-tetrahedrite-quartz-siderite hydrothermal vein rock (Warbonnet Vein, San Juan Volcanic Field, mid-Tertiary; Creede Mining District, northern Mineral County, San Juan Mountains, southwestern Colorado, USA).jpg

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English: Sulfidic hydrothermal vein rock (copper ore) from the Tertiary of Colorado, USA. (8.3 cm across)

This sample of copper ore is a polymineralic hydrothermal vein that has intruded volcanic rocks of southwestern Colorado's San Juan Volcanic Field. The brassy gold area at center is chalcopyrite (CuFeS - copper iron sulfide). The mottled dark brassy & gray area at right is mixed pyrite-tetrahedrite (FeS2 - iron sulfide and Cu12Sb4S13 - copper antimony sulfide). The whitish-gray material at left is quartz (SiO2 - silica). The small brown masses mixed with the quartz are siderite (FeCO3 - iron carbonate).

Geology & age: Warbonnet Vein, San Juan Volcanic Field, mid-Tertiary

Locality: Creede Mining District, northern Mineral County, San Juan Mountains, southwestern Colorado, USA
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Source https://www.flickr.com/photos/47445767@N05/15366184695/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15366184695 (archive). It was reviewed on 22 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

22 December 2019

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current18:18, 22 December 2019Thumbnail for version as of 18:18, 22 December 20193,996 × 2,047 (3.37 MB)Ser Amantio di Nicolao (talk | contribs)User created page with UploadWizard

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