Gillam Mine, Camp Pardee, Pardee Mining District, Calaveras County, California, USAi
| Regional Level Types | |
|---|---|
| Gillam Mine | Mine |
| Camp Pardee | Unincorporated Community |
| Pardee Mining District | Mining District |
| Calaveras County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 13' 31'' North , 120° 47' 22'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Valley Springs | 3,553 (2011) | 5.1km |
| San Andreas | 2,783 (2011) | 10.1km |
| Mokelumne Hill | 646 (2011) | 11.1km |
| Rancho Calaveras | 4,489 (2018) | 12.4km |
| Buena Vista | 429 (2011) | 13.3km |
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 | 19km |
| Calaveras Gem & Mineral Society | Angels Camp, California | 28km |
A former Cr mine located in the SE¼SW¼ sec. 5, T4N, R11E, MDM, about 6 km SE of Camp Pardee (3 miles NE of Valley Springs, just N of the crest of a small, rocky hill). Discovered and first operated in 1918. Owned by Jefferson Gillam, California (1976). Lessed/operated by A.C. Kerley and Walton Van Winkle, California (1976). MRDS database stated accuracy for this location is 100 meters.
The ore body strikes and dips N30W and is in a shear zone and is irregular in form. The primary mode of origin was magmatic differentiation. Primary ore control was lithology and the secondary control was faulting. Wallrock alteration is moderate (carbonitization). The ore occurs in small, irregular bodies enclosed in hard, dense serpentine, carrying 31 to 35% Cr2O3. Local rocks include Miocene nonmarine rocks.
Workings include surface and underground openings. Developed by a long, narrow 100 foot long open cut and a 22 foot deep shaft.
The mine has been idle since 1918. Said to be mined out.
Produced 72 long tons of ore were produced.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Formula: Fe2+Cr3+2O4 |
| ⓘ Magnesiochromite Formula: MgCr2O4 |
| ⓘ Opal Formula: SiO2 · nH2O |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite ? | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnesiochromite | 4.BB.05 | MgCr2O4 |
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Opal | SiO2 · nH2O |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Magnesiochromite | MgCr2O4 |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Magnesiochromite | MgCr2O4 |
| Si | Silicon | |
| Si | ⓘ Opal | SiO2 · nH2O |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | ⓘ Magnesiochromite | MgCr2O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS MRDS: | 10109136 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Calaveras-Baker DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- California
- Mother Lode BeltBelt
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