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Horseshoe I Mine (Bower Cave), Jackass Mountain, Kinsley Mining District, Mariposa County, California, USAi
| Regional Level Types | |
|---|---|
| Horseshoe I Mine (Bower Cave) | Mine |
| Jackass Mountain | Mountain |
| Kinsley Mining District | Mining District |
| Mariposa County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° 44' 53'' North , 120° 2' 6'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Greeley Hill | 915 (2011) | 8.3km |
| Coulterville | 201 (2011) | 14.9km |
| Groveland | 601 (2011) | 20.0km |
| Bear Valley | 125 (2011) | 21.3km |
| El Portal | 474 (2011) | 23.5km |
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 |
|---|---|---|
| Mariposa Gem & Mineral Club | Mariposa, California | 30km |
A former lode Au-Cu-Pb-Ag-Zn mine located in sec. 23, T2S, R17E, MDM, 2.3 km (7,700 feet) NNW of Jackass Mountain (coordinates of record), along the North Fork Merced River at Bower Cave, on private (patented) land within a National Forest. Discovered in 1867. Property is comprised of a 20 acre patented claim. Operated in 1867, 1879-1881, 1904-1913, and 1951 - ?. Operated by Joseph Dupret, Jr. and Irene Dupret. MRDS database stated accuracy for this location is 500 meters. UTM accurate. Based on Bower Cave, SW¼NW¼ sec. 19, T2S, R18E, Coulterville 15 minute quadrangle (1947). Property may be one of 3, NE¼NE¼ sec. 23, T2S, R17E, Jawbone Ridge quadrangle (1947).
Mineralization is a vein deposit with 2 nearly parallel quartz veins, hosted in slate, hornfels, clay, mud, shale and siltstone. The ore body strikes N70E and dips 65SE. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Local structures include: Metasedimentary ceavage which strikes NW and dips SW.
Workings include underground openings with a total length of 518.16 meters and an overall depth of 53.34 meters. The principal workings were comprised of a crosscut adit 200 feet long, 125 feet deep, 1,500 feet of drifts, a 50 foot winze on the S vein with 130 feet of drifts.
Production data are found in: Bowen, O.E., Jr. & C.H. Gray, Jr. (1957), and Maurer, R.B., Wallace, R.E. (1956).
Sponge gold sent to the U.S. mint. Sulfide concentrate sent to Selby, Califotrnia, smelter. Mine and mill hand operated by 3 men processing 6 tons ore/day. Present activity unknown.
Mineralization is a vein deposit with 2 nearly parallel quartz veins, hosted in slate, hornfels, clay, mud, shale and siltstone. The ore body strikes N70E and dips 65SE. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Local structures include: Metasedimentary ceavage which strikes NW and dips SW.
Workings include underground openings with a total length of 518.16 meters and an overall depth of 53.34 meters. The principal workings were comprised of a crosscut adit 200 feet long, 125 feet deep, 1,500 feet of drifts, a 50 foot winze on the S vein with 130 feet of drifts.
Production data are found in: Bowen, O.E., Jr. & C.H. Gray, Jr. (1957), and Maurer, R.B., Wallace, R.E. (1956).
Sponge gold sent to the U.S. mint. Sulfide concentrate sent to Selby, Califotrnia, smelter. Mine and mill hand operated by 3 men processing 6 tons ore/day. Present activity unknown.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10106866 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- East BeltMining Region
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060430227
