| Locality type: | Ranch |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Thunder Egg | 6 |
| Quartz | 5 |
| - var Agate | 5 |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Richardson Ranch, Madras, Jefferson County, Oregon, USA |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 354428 |
| Long-form Identifier: | 1:3:354428:0 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 7.5km (4.7 miles) | ⓘThunderegg Deposit, Pony Butte, Jefferson County, Oregon, USA |
| 12.2km (7.6 miles) | ⓘPolka Dot Agate mine, Jefferson County, Oregon, USA |
| 24.5km (15.2 miles) | ⓘRound Butte Cinder Pit, Jefferson County, Oregon, USA |
| 46.9km (29.2 miles) | ⓘBarnes Butte (Prineville Quicksilver), Howard Mining District (Ochoco Mining District; Bolivar Mining District), Crook County, Oregon, USA |
| 56.2km (34.9 miles) | ⓘJimmy Ann (Beardssmore; Stanley & Culbertson; Staley; Ochoco Mines Corp.; Ochoco Quicksilver Champion; Barney and Staley), Howard Mining District (Ochoco Mining District; Bolivar Mining District), Crook County, Oregon, USA |
| 59.3km (36.8 miles) | ⓘTygh Valley, Wasco County, Oregon, USA |
| 66.1km (41.1 miles) | ⓘMother Lode (American Almaden; Consolidated Quicksilver; Canyon Creek), Howard Mining District (Ochoco Mining District; Bolivar Mining District), Crook County, Oregon, USA |
| 74.8km (46.4 miles) | ⓘPost, Crook County, Oregon, USA |
| 77.3km (48.1 miles) | ⓘCinnabar Occurrence, Breitenbush-Austin Hot Springs area, Santiam Mining District (Elkhorn Mining District), Marion County, Oregon, USA |
| 87.2km (54.2 miles) | ⓘKiggins Mine, Oak Grove Fork, Clackamas County, Oregon, USA |
| References |
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Richardson Ranch, Madras, Jefferson County, Oregon, USA