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Zurcher Mine (Zurcher prospect; Zurcher property; Quarry No. 1), Sheep Ranch, Mountain Ranch Mining District, Calaveras County, California, USAi
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Latitude & Longitude (WGS84):
38° 11' 8'' North , 120° 26' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Forest Meadows | 1,249 (2015) | 4.0km |
| Murphys | 2,213 (2015) | 5.5km |
| Avery | 646 (2011) | 7.0km |
| Fort Jones | 643 (2006) | 8.3km |
| Mountain Ranch | 1,628 (2011) | 9.5km |
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 |
|---|---|---|
| Calaveras Gem & Mineral Society | Angels Camp, California | 15km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 39km |
A Mn occurrence/prospect/mine located in secs. 20 & 21, T4N, R14E, MDM, 3.0 km (1.9 miles) SSE of Sheep Ranch and about 3¾ miles N of Murphys (10 miles NE of Angels Camp) (private lease). Discovered in 1918. Owned by F.D. Zurcher, California (1974). Operated by L.A. St. John, California (1974). MRDS database stated accuracy for this location is 1000 meters.
NOTE: Of the 3 USGS MRDS database files pertaining to this locality, file #10187276 has the most vague and deviant data from the other 2 files.
The ore body strikes N60E and dips vertical. Manganese-stainecd metachert crops out at intervals for a distance of 300-350 feet along the strike, which is N60E. Oxidation has extended for at least 4 or 5 feet below the surface. No garnet was seen but the crumbly brownish-black to black oxide indicates its presence. Material is low-grade and of no economic importance. Samples assaying 54% Mn oxide was said to have been obtained here. No more than 10 to 12 tons of such material could be obtained. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
No development work has been done.
NOTE: Of the 3 USGS MRDS database files pertaining to this locality, file #10187276 has the most vague and deviant data from the other 2 files.
The ore body strikes N60E and dips vertical. Manganese-stainecd metachert crops out at intervals for a distance of 300-350 feet along the strike, which is N60E. Oxidation has extended for at least 4 or 5 feet below the surface. No garnet was seen but the crumbly brownish-black to black oxide indicates its presence. Material is low-grade and of no economic importance. Samples assaying 54% Mn oxide was said to have been obtained here. No more than 10 to 12 tons of such material could be obtained. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
No development work has been done.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Manganese Oxides' |
| ⓘ Spessartine Formula: Mn2+3Al2(SiO4)3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Spessartine | 9.AD.25 | Mn2+3Al2(SiO4)3 |
| Unclassified | |||
| ⓘ | 'Manganese Oxides' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Mn | Manganese | |
| Mn | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
Other Databases
| Link to USGS MRDS: | 10029484 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Calaveras County
- Sierra NevadaMountain Range
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