| Locality type: | Prospect |
| Classification |
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| Species: | 'Psilomelane' (not an IMA approved species) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Psilomelane data |
| Locality Data: | Click here to view Powers prospect, Spanish Flat, Napa County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 329800 |
| Long-form Identifier: | 1:3:329800:8 |
| GUID (UUID V4): | 7535b8f2-6a99-4ec6-b7f2-cce7f2a7b196 |
| Nearest other occurrences of Psilomelane |
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| 31.8km (19.8 miles) | ⓘMount Saint Helena, Robert Louis Stevenson State Park, The Palisades [range], Calistoga, Napa County, California, USA |
| 51.2km (31.8 miles) | ⓘKnutte Mine (Knutte deposit), Novato, Marin County, California, USA |
| 57.7km (35.8 miles) | ⓘElliott prospect (Elliot prospect), Caldwell Pines, East Mayacmas Mining District, Lake County, California, USA |
| 61.3km (38.1 miles) | ⓘHerndon Manganese No. 1 prospect, Clear Lake Oaks, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA |
| 61.3km (38.1 miles) | ⓘLa Bree claim (Manganese No. 2 claim), Indian Valley Reservoir, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA |
| 62.0km (38.5 miles) | ⓘBoyer Mine (Wheeler Mine; Shanks and Copps), Warm Springs Dam, Coast Range, Sonoma County, California, USA |
| 62.7km (38.9 miles) | ⓘMaillard Ranch occurrence [2], San Geronimo, Marin County, California, USA |
| 65.4km (40.7 miles) | ⓘRed Rock Island deposit, Richmond, Contra Costa County, California, USA |
| 75.5km (46.9 miles) | ⓘShaw and Mathews Mine, Pieta, Mendocino County, California, USA |
| 79.1km (49.1 miles) | ⓘShaw Mine, Shaw Ranch, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Report (volume) | | prospect________________________ Peach prospect __ - _ Henrietta prospect-___________________ Ridleymine__...Davidson Canyon and vicinity___________________ 150 California mine__________________________ 150 Montana m...deposits. ________________...._________ 153 Anderson prospect _________..____________ 154 Enzenberg mine___...mine__________________________ 154. Friez prospect _________________________-_ 154 Hancock mine __________________________...Florida mine __________ 168 Helen Gould prospect 170 Sawmill prospect 1 : 170 Star Pointer mine______ 170 |
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