File:Native silver-acanthite-barite (Puzzle Vein, Tertiary; Bulldog Mountain Mine, Creede Mining District, Colorado, USA) 9.jpg

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English: Silver ore from the Tertiary of Colorado, USA. (cut surface)

Whitish = barite (BaSO4 - barium sulfate) Dark gray to black = acanthite (Ag2S - silver sulfide) Bright silvery = native silver (Ag)

This Creede, Colorado silver ore sample has banded barite and acanthite with numerous spots of native silver. It comes from a hydrothermal vein that intrudes Tertiary-aged volcanic rocks. The mineral suite is typical of southern facies of stage B mineralization of Plumlee & Whitehouse-Veaux (1994). The rock comes from the highest-grade silver ore occurrence in the Bulldog Mountain Mine, which had grades of up to several thousand ounces of silver per ton of rock.

Geologic unit: Puzzle Vein, Bulldog Mountain Vein System, Tertiary

Locality: 67 Stope, 9360' to 9500' Levels, Bulldog Mountain Mine, Creede Mining District, northwest of the town of Creede, northern Mineral County, San Juan Mountains, southwestern Colorado, USA (vicinity of 37° 51' 35.74" North latitude, 106° 56' 20.45" West longitude)

Reference cited:

Plumlee & Whitehouse-Veaux (1994) - Mineralogy, paragenesis, and mineral zoning of the Bulldog Mountain Vein System, Creede District, Colorado. Economic Geology 89: 1883-1905.
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Source https://www.flickr.com/photos/47445767@N05/51447873336/
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51447873336. It was reviewed on 13 September 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

13 September 2021

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current17:55, 13 September 2021Thumbnail for version as of 17:55, 13 September 20214,000 × 2,911 (6.23 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51447873336/ with UploadWizard

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