| Locality type: | Mine |
| Classification |
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| Species: | Pyrolusite |
| Formula: | Mn4+O2 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Psilomelane
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| Data |
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| Mineral Data: | Click here to view Pyrolusite data |
| Locality Data: | Click here to view Fort Baker Mine (Porter Ranch prospect; Porter Ranch deposit), Lone Star Junction, Coastal Range, Humboldt County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 646036 |
| Long-form Identifier: | 1:3:646036:5 |
| GUID (UUID V4): | 1ecaa5e9-836a-4332-88ea-a690334daa34 |
| Nearest other occurrences of Pyrolusite |
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| 45.8km (28.4 miles) | ⓘMurphy prospect, Alderpoint, Coastal Range, Humboldt County, California, USA |
| 51.5km (32.0 miles) | ⓘWhite Oak prospect (Griffiths Mining & Development Company), Ruth, Coastal Range, Trinity County, California, USA |
| 59.5km (37.0 miles) | ⓘDouble-A prospect (Double A prospect), Van Horn Peak, Coastal Range, Trinity County, California, USA |
| 63.7km (39.6 miles) | ⓘWeed prospect (Ward), Red Mountain, Upper Hayfork Creek area, Klamath Mountains, Trinity County, California, USA |
| 65.9km (40.9 miles) | ⓘLucky Sunday and Billy Sunday claims (Lucky Sunday claim; Billy Sunday claim), Three Forks, Coastal Range, Trinity County, California, USA |
| 68.9km (42.8 miles) | ⓘBlue Jay Mine (Blue Jay claim; Blue Bird Mine; McKnight; McKnight), Three Forks, Coastal Range, Trinity County, California, USA |
| 86.9km (54.0 miles) | ⓘBlackies Hill claims, Lookout Peak, Klamath Mountains, Shasta County, California, USA |
| 95.2km (59.1 miles) | ⓘFive Pines Mine (Van Ness Mine; Surprise claim; Emma claim), Bowerman Peak, Minersville Mining District, Klamath Mountains, Trinity County, California, USA |
| 96.4km (59.9 miles) | ⓘMcLaughlin claims (McLaughlin deposit; Blands Cove), Leech Lake Mountain, Reeves Place, Coastal Range, Mendocino County, California, USA |
| 96.8km (60.1 miles) | ⓘLong Mine (Earl W. Long prospect; Earl W. Long deposit; Happy Four; Happy Hour; Last Chance), Woodman, Coastal Range, Mendocino County, California, USA |
| References |
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