Harrington prospect (Harrington deposit; Manganese Mine claim), Murphys, Murphys Mining District (Esmeralda Mining District; Sperry Mining District), East Belt, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Harrington prospect (Harrington deposit; Manganese Mine claim) | Prospect |
| Murphys | - not defined - |
| Murphys Mining District (Esmeralda Mining District; Sperry Mining District) | Mining District |
| East Belt | - not defined - |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 6' 49'' North , 120° 24' 12'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Murphys | 2,213 (2015) | 5.7km |
| Forest Meadows | 1,249 (2015) | 6.1km |
| Vallecito | 442 (2011) | 6.7km |
| Columbia | 2,297 (2017) | 8.6km |
| Avery | 646 (2011) | 10.5km |
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 | 13km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 47km |
Mindat Locality ID:
75333
Long-form identifier:
mindat:1:2:75333:6
GUID (UUID V4):
21700fcb-b257-4cfb-9a08-072a43aac2d3
A Mn occurrence/claim located in secs. 14 & 16, T3N, R14E, MDM, along the W side of the Stanislaus River (5 miles ESE of Murphys and 12.5 miles ENE of Angels Camp) (private lease). Discovered in 1918. Owned by F.M. Harrington, California (1974). Operated by L.A. St. John, California (1974). MRDS database stated accuracy for this location is 5,000 meters.
NOTE: USGS MRDS database file #10138063 presents geographic coordinates of 120.53791W, 38.19431N (38°11'39"N, 120°32'16"W) and place the occurrence generally in T3N, R13E, MDM, roughly between Mountain Ranch and Calaveritas. These values are at significant deviance from the data presented in the other 2 MRDS files.
The ore body is 0.91 meter wide and 4.57 meters long. The ore occurs in a lens with an exposed length of 15 feet and a width of 1 to 3 feet, enclosed in quartz schist. Within a short distance of the surface the oxidized material passes into only partially oxidized manganese garnet. Quartz isd always present. Local rocks include Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range) and/or Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include underground openings comprised of a 20 foot shaft. Drifts run to the W for 12 feet and to the E for 8 feet.
About 8 or 10 tons of 35-42% ore have been mined but not shipped.
Analytical data results: The ore grade is 35 to 42 percent Mn.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Detailed Mineral List:
| ⓘ Rhodonite Formula: CaMn3Mn[Si5O15] References: |
| ⓘ 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 |
| ⓘ | Rhodonite | 9.DK.05 | CaMn3Mn[Si5O15] |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| O | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Al | Aluminium | |
| Al | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Si | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
| Ca | Calcium | |
| Ca | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Mn | Manganese | |
| Mn | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
| Mn | ⓘ Spessartine | Mn32+Al2(SiO4)3 |
Other Databases
| Link to USGS MRDS: | 10029428 |
|---|
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References
