Little Joe opal mine (Black Rock mine; Little Jo mine), Donnelly Mining District, Humboldt County, Nevada, USAi
Regional Level Types | |
---|---|
Little Joe opal mine (Black Rock mine; Little Jo mine) | Mine |
Donnelly Mining District | Mining District |
Humboldt County | County |
Nevada | State |
USA | Country |
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Latitude & Longitude (WGS84):
41° 8' 14'' North , 119° 8' 59'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Gerlach | 206 (2011) | 56.7km |
Mindat Locality ID:
63583
Long-form identifier:
mindat:1:2:63583:6
GUID (UUID V4):
3283b33c-b52f-4ec6-bd5e-8397733f59a7
Calico Hills. Sec 5 T37N R25E.
Originally located by Ray Duffield. Subsequently acquired by David Pooley in the 1980s and renamed the Blackrock Opal Mine. Patented Mining claim; current ownership (2018) uncertain. Precious opal fills voids in basalt.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ Opal Formula: SiO2 · nH2O |
ⓘ Opal var. Precious Opal Formula: SiO2 · nH2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
ⓘ | var. Precious Opal | 4.DA.10 | SiO2 · nH2O |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Opal | SiO2 · nH2O |
H | ⓘ Opal var. Precious Opal | SiO2 · nH2O |
O | Oxygen | |
O | ⓘ Opal | SiO2 · nH2O |
O | ⓘ Opal var. Precious Opal | SiO2 · nH2O |
Si | Silicon | |
Si | ⓘ Opal | SiO2 · nH2O |
Si | ⓘ Opal var. Precious Opal | SiO2 · nH2O |
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