Alpha and Omega Mine (Stramatis Mines; Omega; Omega Fler De Ora; Matilda; Greek), Mountain Ranch, Mountain Ranch Mining District, East Belt, Calaveras County, California, USAi
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Latitude & Longitude (WGS84):
38° 16' 32'' North , 120° 33' 13'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mountain Ranch | 1,628 (2011) | 5.4km |
| Rail Road Flat | 475 (2015) | 8.3km |
| Fort Jones | 643 (2006) | 11.9km |
| Mokelumne Hill | 646 (2011) | 13.6km |
| West Point | 674 (2011) | 13.9km |
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 |
|---|---|---|
| Calaveras Gem & Mineral Society | Angels Camp, California | 23km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 25km |
A former lode Au mine located in secs. 20 & 21, T5N, R13E, MDM, about 6 km N of Mountain Ranch and about 8.3 km E of Jesus Maria, on the ridge between Jesus Maria Creek and Espernaza Creek. Operated in 1877, in the early 1890's, and 1913-1914. MRDS database accuracy for this location is not stated.
Mineralization is a vein deposit hosted in mica schist and slate. The ore body strikes NW and dips NE at a thickness of 0.46 meters. The vein is asslociated with dikes. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include underground openings with a length of 214.88 meters and an overall depth of 53.34 meters. Developed by several shafts up to 175 feet deep, 350 feet of adits and 180 feet of drifts. Some shafts were re-timbered during 1913.
The ore is free-milling ansd was treated in a 5-stamp mill. Ore yielded $19 to $34 (period values) per ton Au.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS MRDS: | 10029249 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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