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USA | |
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| [Chalcedony var. Agate] Pabian Agate Lexicon database |
- Cargo Muchacho Mining District (Hedges Mining District; Ogilby Mining District)
| Eckhard D. Stuart collection
Robert E.Walstrom Collection |
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| Walstrom, Robert E. (n.d.) Personal communication. |
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| Walstrom, Robert E. (n.d.) Personal communication. |
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| Collected on Friends of Mineralogy field trip, 25 March 2018 (WW Besse) |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey.
Robert E.Walstrom Collection |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
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| A Au occurrence/prospect located in the SW¼ sec. 16, T15S, R21E, SBM, 1.9 km (1.2 miles
6,400 feet) ESE of Obregon (4.4 miles N63E of Ogilby). MRDS database stated accuracy for this location is 500 meters. Mineralization is a vein deposit hosted in gneiss. The ore body strikes N10W and dips 45NE. The deposit consists of a 2 to 3 foot wide breccia zone that contains irregular masses of quartz 1 to 2 feet wide. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges). Workings include surface and underground openings comprised of a 30 foot drift adit and several small cuts and pits. |
- Vitrefrax Hill (Bluebird Hill)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
