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Algall Mine (Argol; Algol [?]), Bald Rock Mountain, Placer County, California, USAi
| Regional Level Types | |
|---|---|
| Algall Mine (Argol; Algol [?]) | Mine |
| Bald Rock Mountain | Mountain |
| Placer County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 59' 37'' North , 121° 11' 55'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| North Auburn | 13,022 (2011) | 12.2km |
| Lake of the Pines | 3,917 (2011) | 13.3km |
| Lincoln | 46,474 (2017) | 14.0km |
| Newcastle | 1,224 (2011) | 14.4km |
| Auburn | 13,953 (2017) | 15.1km |
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 |
|---|---|---|
| Nevada County Gem & Mineral Society | Grass Valley, California | 28km |
| Roseville Rock Rollers | Roseville, California | 28km |
| Fossils for Fun Society, Inc. | North Highlands, California | 37km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 37km |
| Sutter Buttes Gem & Mineral Society | Marysville, California | 38km |
A former Cu-Au mine located in sec. 3 and/or 5 and/or 9, T13N, R7E, MDM, 5.7 km (3.6 miles) SW of Bald Rock Mountain (coordinates of record) and 5.0 km (3.1 miles) ENE of Kilaga Springs (Wheatland District), N of Auburn and S of the Bear River at Garden Bar (9 miles NE of Lincoln). Owner Nevada Irrigation Dist. 1948. MRDS database stated accuracy for this location is 500 meters.
NOTE: Bulletin 144 shows locality in sec. 3, but only Cu prospect resembling this is in sec. 5 per folio 18. USGS MRDS database file #10032042 states sec. 9.
Mineralization is a vein deposit. The ore body is lenticular in form at a thickness of 3.05 meters and a length of 27.43 meters. The vein channel is 50 to 60 feet wide but the more highly mineralized portion constituting the ore is from 20 inches (50 cm) to 10 feet thick. The ore occurs as lenses. Local rocks include Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains).
Workings include underground openings with a length of 134.11 meters and an overall depth of 36.58 meters, comprised of a 120 foot deep shaft with a 100 foot drift running N. Another 120 foot shaft was sunk with drifts at 50 and 100 feet levels. A crosscut was driven from one shaft 65 feet W.
10 carloads of ore averaging 20% Cu were shipped in the 1860's.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 Description: Abundant |
| ⓘ Native Copper Formula: Cu |
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10032042 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Foothills-Wallowa DomainDomain
- Sierra Nevada BatholithVolcanic Arc
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file #0060610082
(1908, September) The Copper Resources of California. Bulletin 50. California State Mining Bureaup.173
