| Locality type: | Reservoir |
| Classification |
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| Species: | Opal var: Common Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Manganese Dendrites | 1 photo of Common Opal associated with Manganese Dendrites at this locality. |
| Data |
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| Mineral Data: | Click here to view Common Opal data |
| Locality Data: | Click here to view Perch Point-Potholes Reservoir (Medicare Beach), Warden, Grant County, Washington, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 952652 |
| Long-form Identifier: | 1:3:952652:5 |
| GUID (UUID V4): | f34b16e9-dc10-43f7-aa52-2221a4375d39 |
| Nearest other occurrences of Common Opal |
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| 63.5km (39.5 miles) | ⓘState Route 17 road cuts [2], Coulee City, Grant County, Washington, USA |
| 65.6km (40.8 miles) | ⓘState Route 17 road cut [1], Coulee City, Grant County, Washington, USA |
| References |
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Perch Point-Potholes Reservoir, Warden, Grant County, Washington, USA