| Locality type: | Mountain |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Specimen Mountain, Larimer County, Colorado, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 390718 |
| Long-form Identifier: | 1:3:390718:4 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 47.3km (29.4 miles) | ⓘHot Sulfur Springs, Grand County, Colorado, USA |
| 57.6km (35.8 miles) | ⓘClyde Mine (Lily Mine; Gale Mine; Hoosier; Western Star), Boulder County, Colorado, USA |
| 61.4km (38.1 miles) | ⓘBlack Hawk No. 1 vein, Boulder County Tungsten Mining District, Boulder County, Colorado, USA |
| 82.2km (51.1 miles) | ⓘColumbia, Lamartine Mining District, Clear Creek County, Colorado, USA |
| 82.4km (51.2 miles) | ⓘJewelry Shop Mine (West Gold Mine; Sylvanite Mine), Lamartine Mining District, Clear Creek County, Colorado, USA |
| 89.2km (55.4 miles) | ⓘNorth Table Mountain, Golden, Golden Mining District, Jefferson County, Colorado, USA |
| 92.4km (57.4 miles) | ⓘSouth Table Mountain, Golden, Golden Mining District, Jefferson County, Colorado, USA |
| 97.6km (60.6 miles) | ⓘGreen Mountain, Golden, Golden Mining District, Jefferson County, Colorado, USA |
| 99.6km (61.9 miles) | ⓘRed Jacket (Star of the West; Star of the West No. 2; Mohawk; Iowa), Montezuma Area, Summit County, Colorado, USA |
| References |
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Specimen Mountain, Larimer County, Colorado, USA