Greens Gulch & Greens Gulch Extension Mine, Mount Bullion, Bagby-Mariposa-Mount Bullion-Whitlock Mining District, Mariposa County, California, USAi
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Latitude & Longitude (WGS84):
37° 30' 24'' North , 120° 3' 25'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mariposa | 2,173 (2017) | 8.4km |
| Bear Valley | 125 (2011) | 8.8km |
| Catheys Valley | 825 (2011) | 9.0km |
| Midpines | 1,204 (2011) | 12.7km |
| Bootjack | 960 (2011) | 15.7km |
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 | 8km |
A former lode Au mine located in secs. 12 & 13, T5S, R17E, MDM, 1.3 km (4,400 feet) WNW of Mount Bullion, along Green Gulch. Discovered in 1855. Operated in the 1860's and during the period 1901-1914. Operated by the Mariposa Commercial and Mining Co. MRDS database stated accuracy for this location is 500 meters. This mine is one of the Las Mariposas grant mines.
NOTE: The stream is named "Green Gulch" on the topo maps and in the USGS GNIS database. Both MRDS database files call it "Greens Gulch."
Mineralization is a vein deposit hosted in Late Jurassic slate. The ore body strikes N52.5W and dips steeply E. A broad vein is intersected by NE-trending cutter veins. The Mother Lode broad vein part of a series of NW-trending, en echelon Mother Lode veins, and is probably an extension of the Princeton Mine main vein. It averages 3 feet in thickness. The vein matter is principally milky quartz containing native gold and auriferous pyrite. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include underground openings comprised of a 300 foot shaft with 13 levels, a 550 foot adit level, 510 foot drift on the 1st. level, and 360 feet of drifts on the 2nd. level, plus crosscuts, raises and stopes.
Production data are found in: Bowen, O.E., Jr. & C.H. Gray, Jr. (1957).
Principal activity was in the 1860's and 1901-1914. Some work was done in 1941, but nothing since. Records show production from 1900 to 1915. Greens Gulch produced 10,625 tons of ore which yielded $119,140.70 (period values), averaging $10.25 (period values) per ton. During the same period, the Greens Extension produced 10.25 tons of ore from which $313.99 (period values) was realized, or $13.96 (period values) per ton.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 Description: Auriferous material. |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Milky Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | var. Milky Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | Oxygen | |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Quartz var. Milky Quartz | SiO2 |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Quartz var. Milky Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Pyrite | FeS2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10031038 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Mother Lode BeltBelt
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060430344
