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Chalcedony from
Black Hawk No. 1 vein, Boulder County Tungsten Mining District, Boulder County, Colorado, USA


Locality type:Vein
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Black Hawk No. 1 vein, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:725479
Long-form Identifier:1:3:725479:6
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
3.8km (2.4 miles) ⓘBettig mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
3.9km (2.4 miles) ⓘConger Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
4.8km (3.0 miles) ⓘClyde Mine (Lily Mine; Gale Mine; Hoosier; Western Star), Boulder County, Colorado, USA
5.3km (3.3 miles) ⓘCold Spring Mine, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
7.5km (4.7 miles) ⓘCaribou Mine (Caribou shaft), Caribou Mine group, Grand Island, Caribou Mining District, Boulder County, Colorado, USA
9.7km (6.0 miles) ⓘPeewink Mountain tunnel, Boulder County Tungsten Mining District, Boulder County, Colorado, USA
15.1km (9.4 miles) ⓘLogan & Sunbeam Occurrence, Gold Hill Mining District, Boulder County, Colorado, USA
18.3km (11.4 miles) ⓘGerman and Belcher, Quartz Hill, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
19.6km (12.2 miles) ⓘDiamond Joe tunnel, Idaho Springs, Lawson Mining District, Clear Creek County, Colorado, USA
21.6km (13.4 miles) ⓘBlue Jay Mine, Jamestown, Jamestown Mining District, Boulder County, Colorado, USA
References
USGS Bull 583
 
and/or  
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