Heckendorn Mine (Heckendorm Mine; Blue Mountain Mine), Fuchs, Blue Mountain Mining District, East Belt, Calaveras County, California, USAi
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Latitude & Longitude (WGS84):
38° 22' 29'' North , 120° 23' 37'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Rail Road Flat | 475 (2015) | 11.1km |
| West Point | 674 (2011) | 12.0km |
| Dorrington | 609 (2011) | 13.0km |
| Fort Jones | 643 (2006) | 13.2km |
| Arnold | 3,843 (2011) | 13.8km |
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 |
|---|---|---|
| Amador County Gem & Mineral Society | Sutter Creek, California | 36km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 36km |
A former Au-Ag-Cu-Sb mine located in sec. 14, T6N, R14E, MDM, 6.2 km (3.9 miles) ENE of Fuchs, and 1¼ miles W of Buck Mountain, in the headwaters area of Dutch Creek, on National Forest land. Operated in the 1860's, 1870's, and during the period 1935-1936. MRDS database stated accuracy for this location is 100 meters.
NOTE in MRDS file: Both references agree on locationm but platted on Blue Mt map in sec. 14 T6N R14E - these are UTM locations. References give location as sec. 18, T6N, R15E - no evidence on map of mine in this locality.
Mineralization is hosted in granodiorite, diorite, and gneiss. The ore body strikes N3W and dips 61W at a thickness of 1.22 meters. The principal vein outcrop can be traced for 1,000 feet and is the middle vein, with a granodiorite footwall and porphyry hanging wall. Two other veins occur on the property. The East vein strikes N and dips 78W, and the West vein strikes N16W and dips 42W. The outcrop of the East vein is traceable for 3,000 feet and is 8 feet (2.6 meters) wide, while the West vein is 30 inches (75 cm) wide. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include underground openings. The property is developed by a 50 foot shaft and a drift driven N for 150 feet at the bottom. There is also an open cut. The West vein is developed by a drift driven N for 350 feet.
Production data are found in: Logan, Clarence August and Franke, H. (1936) & in Clark, Wm. B. & P.A. Lydon (1962).
Production statistics: Year: 1935: ^0.86 ounces (24 grams) of Au and 4.1 ounces (116 grams) Ag per ton.
Analytical data results: From ore to the smelter in 1935: Au & Ag as per values presented above; Cu: 0.2%, As: 0.05%, Sb: 0.2%, Fe: 3.6%, lime: 1.0%, insolubles: 93.2%.
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: | 10029517 |
|---|
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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