Conlon Mine (Winding lode; Winding claim; Lafayette claim; Conlin; Conlan; Comet claim; Jefferson claim; Jefferson lode), La Barr Meadows, Grass Valley Mining District, Nevada County, California, USAi
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Latitude & Longitude (WGS84):
39° 11' 3'' North , 121° 2' 24'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Grass Valley | 12,944 (2017) | 4.3km |
| Alta Sierra | 6,911 (2011) | 4.9km |
| Nevada City | 3,152 (2017) | 8.8km |
| Rough and Ready | 963 (2011) | 9.7km |
| Colfax | 2,005 (2017) | 11.9km |
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 | 4km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 48km |
Mindat Locality ID:
8155
Long-form identifier:
mindat:1:2:8155:2
GUID (UUID V4):
ead2ddf6-beda-4e12-a9a4-c50b2051115d
A former lode Au-Pb occurrence/mine located in the SW¼ sec. 1, T15N, R8E, MDM, 1.1 km (0.7 mile) NNE of La Barr Meadows, on Osborn Hill (3 miles SE of Grass Valley), on private (patented) land (4 patented claims). The property comprises 90 acres. MRDS database stated accuracy for this location is 500 meters.
Mineralization is a vein deposit hosted in porphyry and sedimentary breccia. The ore body strikes N and dips 25-42W. The vein averages 26 inches (65 cm) thick. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings with a length of 1,371.6 meters and an overall depth of 222.5 or 228.6 meters and comprised of shafts, crosscut adit, drifts, stopes, raises, a winze, tunnel and numerous levels.
Ore was valued at $20 to $50 (period values) Au/ton.
No other production data were found.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities5 valid minerals.
Detailed Mineral List:
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 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Milky Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Quartz var. Milky Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Quartz var. Milky Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Pyrite | FeS2 |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Au | Gold | |
| Au | ⓘ Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10034995 |
|---|
Localities in this Region
- California
- Nevada County
- Grass Valley Mining District
- La Barr Meadows
- Conlon Mine (Winding lode; Winding claim; Lafayette claim; Conlin; Conlan; Comet claim; Jefferson claim; Jefferson lode)
- La Barr Meadows
- Grass Valley Mining District
- Nevada County
Other Regions, Features and Areas containing this locality
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060570092
