Thorpe Mine, Quiggs Mountain, Mountain Ranch Mining District, East Belt, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Thorpe Mine | Mine |
| Quiggs Mountain | Mountain |
| Mountain Ranch Mining District | Mining District |
| East Belt | - not defined - |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 12' 29'' North , 120° 37' 24'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| San Andreas | 2,783 (2011) | 5.2km |
| Mountain Ranch | 1,628 (2011) | 7.6km |
| Mokelumne Hill | 646 (2011) | 12.6km |
| Murphys | 2,213 (2015) | 16.2km |
| Angels Camp | 2,677 (2012) | 17.2km |
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 | 17km |
| Amador County Gem & Mineral Society | Sutter Creek, California | 26km |
Mindat Locality ID:
75999
Long-form identifier:
mindat:1:2:75999:6
GUID (UUID V4):
7e24d63f-0f57-4a1d-8c80-92bac14ce66d
A former lode Au mine located in the SWΒΌ (estimated) sec. 11, T3N, R11E, MDM, 2.5 km (1.6 miles) SSW of Quiggs Mountain (coordinates of record), just W of highway 49 (6 miles S of Mokelumne Hill [town]). Operated in a small way prior to 1894. MRDS database stated accuracy for this location is 100 meters.
Mineralization is a vein deposit hosted in amphibolite, schist, slate and phyllite. The ore body strikes N60W and dips 53NE at a thickness of 15.24 meters and is comprised of a zone of parallel quartz veins and stringers in amphibolite and chlorite schist. Small amounts of talc and sericite schist are adjacent. Phyllite and slate occur to the W. The thickness of the 3 principal veins average 15 feet but reach 50 feet. The veins are mostly in schist. Ore occurs mostly at the intersection of main and minor fissuring. Levels show fair values. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains) and/or Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).
Workings include underground openings with an overall depth of 194.16 meters, and comprised of a 700 foot main shaft inclined at 55 degrees (now flooded). Stoping occurred on the 300, 400 and 500 foot levels. There is also a 600 foot level.
Production data are found in: Clark, Wm. B. & P.A. Lydon (1962).
Produced a few thousand dollars (period values) in 1895.
Analytical data results: 3% sulfides.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Ankerite Formula: Ca(Fe2+,Mg)(CO3)2 |
| β Calcite Formula: CaCO3 |
| β 'Chlorite Group' Description: Occurs as chlorite schist. |
| β Gold Formula: Au |
| β Muscovite Formula: KAl2(AlSi3O10)(OH)2 Description: Occurs as sericite schist. |
| β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 Description: Occurs as sericite schist. |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 |
| β Talc Formula: Mg3Si4O10(OH)2 Description: Occurs in schist. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| Group 9 - Silicates | |||
| β | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
| β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| β | 'Chlorite Group' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | β Talc | Mg3Si4O10(OH)2 |
| H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| C | Carbon | |
| C | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | β Calcite | CaCO3 |
| O | Oxygen | |
| O | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | β Calcite | CaCO3 |
| O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | β Quartz | SiO2 |
| O | β Talc | Mg3Si4O10(OH)2 |
| O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Mg | Magnesium | |
| Mg | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | β Talc | Mg3Si4O10(OH)2 |
| Al | Aluminium | |
| Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | β Quartz | SiO2 |
| Si | β Talc | Mg3Si4O10(OH)2 |
| Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | β Pyrite | FeS2 |
| K | Potassium | |
| K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | β Calcite | CaCO3 |
| Fe | Iron | |
| Fe | β Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | β Pyrite | FeS2 |
| Au | Gold | |
| Au | β Gold | Au |
Other Databases
| Link to USGS MRDS: | 10028769 |
|---|
Other Regions, Features and Areas containing this locality
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060090340
Clark, Lorin D. (1954) Geology and mineral deposits of the Calaveritas quadrangle, Calaveras County, California. Special Report 40. California Division of Mines p.20
