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Rocky Glen Mine (Illinois Consolidated claim; Illinois Cons.; Stacey claim; Annie and Russel Ravine claim; Blue Cloud claim), Graniteville, Graniteville Mining District (Eureka Mining District), Nevada County, California, USAi
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Latitude & Longitude (WGS84):
39° 25' 37'' North , 120° 44' 9'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Washington | 185 (2011) | 9.3km |
| Downieville | 282 (2011) | 16.7km |
| Sierra City | 221 (2011) | 17.7km |
| Pike | 134 (2011) | 22.5km |
| Alta | 610 (2011) | 25.3km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 36km |
A former Au-Pb-Ag occurrence/mine located in the SW¼ sec. 15 & in sec. 16, T18N, R11E, MDM, 1.6 km (1.0 mile) SSE of Graniteville, in the headwaters area of Rocky Glen, W of the South Fork Poorman Creek, on private (patented) land within a National Forest area. The property comprises 4 claims including the Illinois Consolidated claim (11 acres & patented); the Stacey claim (13 acres & patented); the Annie and Russell Ravine claim and the Blue Cloud claim. MRDS database stated accuracy for this location is 500 meters.
Mineralization is hosted in granite, slate and porphyry. The ore body is ribbon shaped oblong masses, strikes N and dips 45E at a thickness of 4.27 meters. The veins range from a few inches to 14 feet in thickness with about 2 inches of clay gouge in the walls. Local rocks include Mesozoic granitic rocks, unit 4 (Klamath Mountains and Northern Sierra Nevada).
Workings include surface and underground openings with a length of 3,048 meters and an overall depth of 83.82 meters and comprised of an open cut, tunnels, inclined shafts, crosscuts, drifting, a raise and stopes.
Production data are found in: MacBoyle, Errol (1918).
The estimated yield from the Stacey & Illinopis workings (through 1919) was $300,000 (period values). The average yield from the Stacey vein was $6 to $8 (period values) per ton. The Illinois vein averaged $12 per ton. Ore from the Russell Ravine averaged $7 (period values) per ton. Clark (1970a) ascribes a yield of $1,300,000 (period values) to this mine.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Galena Formula: PbS References: |
| ⓘ Gold Formula: Au |
| ⓘ Pyromorphite Formula: Pb5(PO4)3Cl References: |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Galena | 2.CD.10 | PbS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Pyromorphite | 8.BN.05 | Pb5(PO4)3Cl |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| P | Phosphorus | |
| P | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| S | Sulfur | |
| S | ⓘ Galena | PbS |
| Cl | Chlorine | |
| Cl | ⓘ Pyromorphite | Pb5(PO4)3Cl |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Pyromorphite | Pb5(PO4)3Cl |
Other Databases
| Link to USGS MRDS: | 10007631 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570858
