Frog Pond and Marigold Consolidated Mine (Marigold Consolidated; Frogpond and Marigold Cons.; Marigold Cons.), Garden Valley Area West, Greenwood District, Northwest Segment Mother Lode, El Dorado County, California, USAi
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Latitude & Longitude (WGS84):
38° 51' 55'' North , 120° 51' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Georgetown | 2,367 (2011) | 5.1km |
| Coloma | 529 (2011) | 7.6km |
| Auburn Lake Trails | 3,426 (2011) | 9.5km |
| Cool | 4,100 (2017) | 13.3km |
| Cold Springs | 446 (2011) | 13.7km |
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 |
|---|---|---|
| El Dorado County Mineral and Gem Society | Placerville, California | 16km |
| Gold Country Treasure Seekers | Placerville, California | 16km |
| Roseville Rock Rollers | Roseville, California | 39km |
| Nevada County Gem & Mineral Society | Grass Valley, California | 43km |
| Fossils for Fun Society, Inc. | North Highlands, California | 48km |
A former lode Au mine located in the NE¼ sec. 28, T12N, R10E, MDM, 1.3 km (0.8 mile) NNW of Garden Valley (Kelsey District), on the divide between Coloma Canyon and Manhattan Creek. The property comprises 17 acres. Operated intermittently during the period 1914 to 1927. MRDS database stated accuracy for this location is 500 meters. Logan (1934) shows location in the N½SE¼ of the section.
Mineralization is a Au seam deposit with flat Au-bearing seams in amphibolite. Geology includes decomposed igneous rocks in Mariposa slate, probably amphibolite schist. Coarse Au found in quartz and in arsenopyrite in a series of seams. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Workings include surface and underground openings with a length of 42.67 meters, comprised of a 60-foot shaft with drifts and an incline. A 2-stamp mill was erected. Initial development was on the surface.
No production record was found. A small tonnage of ore was produced.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| 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 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10007018 |
|---|
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
- Sierra NevadaMountain Range
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060170587
