| Locality type: | Road Cutting |
| Classification |
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| Species: | 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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| Quartz | ⓘ1 photo of Opal associated with Quartz at this locality. |
| Chalcedony | ⓘ1 photo of Opal associated with Chalcedony at this locality. |
| Sideromelane | 1 photo of Opal associated with Sideromelane at this locality. |
| Palagonite | 1 photo of Opal associated with Palagonite at this locality. |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view State Route 17 road cut [1], Coulee City, Grant County, Washington, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1074823 |
| Long-form Identifier: | 1:3:1074823:3 |
| GUID (UUID V4): | b0d56fd4-9193-4451-a51c-5f64ff78e448 |
| Nearest other occurrences of Opal |
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| 3.9km (2.5 miles) | ⓘState Route 17 road cuts [2], Coulee City, Grant County, Washington, USA |
| 10.1km (6.3 miles) | ⓘCoulee City Marina, Coulee City, Grant County, Washington, USA |
| 56.9km (35.4 miles) | ⓘRock Island Dam, Douglas County, Washington, USA |
| 65.6km (40.8 miles) | ⓘPerch Point-Potholes Reservoir (Medicare Beach), Warden, Grant County, Washington, USA |
| 68.3km (42.4 miles) | ⓘState Route 262 roadcuts, Warden, Grant County, Washington, USA |
| 72.8km (45.2 miles) | ⓘDiatomite Mines (Diatomite Pit North), Quincy, Grant County, Washington, USA |
| 76.3km (47.4 miles) | ⓘDiatomite Mines (Diatomite Pit South), Frenchman Hills, Grant County, Washington, USA |
| 87.0km (54.1 miles) | ⓘVantage area, Kittitas County, Washington, USA |
| 93.2km (57.9 miles) | ⓘSaddle Mountain, Mattawa, Grant County, Washington, USA |
| References |
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State Route 17 road cut [1], Coulee City, Grant County, Washington, USA