| Locality type: | Occurrence |
| Classification |
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| Species: | Quartz var: Chalcedony |
| Formula: | SiO2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Chalcedony data |
| Locality Data: | Click here to view Logan & Sunbeam Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 662657 |
| Long-form Identifier: | 1:3:662657:0 |
| GUID (UUID V4): | f8c43347-1c02-41c6-aeb4-9dd1a87b17c2 |
| Nearest other occurrences of Chalcedony |
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| 5.7km (3.5 miles) | ⓘPeewink Mountain tunnel, Boulder County Tungsten Mining District, Boulder County, Colorado, USA |
| 8.1km (5.0 miles) | ⓘBlue Jay Mine, Jamestown, Jamestown Mining District, Boulder County, Colorado, USA |
| 10.2km (6.3 miles) | ⓘCold Spring Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA |
| 11.4km (7.1 miles) | ⓘClyde Mine (Lily Mine; Gale Mine; Hoosier; Western Star), Boulder County, Colorado, USA |
| 13.4km (8.3 miles) | ⓘConger Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA |
| 13.6km (8.4 miles) | ⓘBettig mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA |
| 17.9km (11.1 miles) | ⓘCaribou Mine (Caribou shaft), Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA |
| 23.2km (14.4 miles) | ⓘSchwartzwalder Mine (Ralston Creek Mine), Ralston Buttes Mining District, Jefferson County, Colorado, USA |
| 28.8km (17.9 miles) | ⓘGerman and Belcher, Quartz Hill, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA |
| 31.6km (19.7 miles) | ⓘNorth Table Mountain, Golden, Golden Mining District, Jefferson County, Colorado, USA |
| References |
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