Gold Blossom Mine (Gold Blossom shaft; Gold Blossom vein; Marion lode; Ohio claim; Back Action claim; Gold Blossom No. 2 claim), Ophir, Ophir Mining District (Auburn Mining District; Duncan Hill Mining District), Placer County, California, USAi
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Latitude & Longitude (WGS84):
38° 54' 11'' North , 121° 8' 16'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Newcastle | 1,224 (2011) | 3.2km |
| Auburn | 13,953 (2017) | 5.3km |
| North Auburn | 13,022 (2011) | 5.8km |
| Penryn | 831 (2011) | 6.3km |
| Loomis | 6,733 (2017) | 10.3km |
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 |
|---|---|---|
| Roseville Rock Rollers | Roseville, California | 21km |
| Fossils for Fun Society, Inc. | North Highlands, California | 32km |
| Sacramento Valley Detecting Buffs | North Highlands, California | 32km |
| El Dorado County Mineral and Gem Society | Placerville, California | 35km |
| Gold Country Treasure Seekers | Placerville, California | 35km |
A former lode Au-Ag-Pb-Cu-Zn-As occurrence/mine located in the S½NE¼SW¼ and in the S½NW¼SE¼, sec. 12, T12N, R7E, and in the SW¼ sec. 7, T12N, R8E, MDM, 1.9 km (1.2 miles) NW of Ophir and about 3 to 4 miles W of Auburn, on the eastern margin of Doty Flat, S of Doty Ravine and NW of the Ophir School (4 miles W of Auburn; 2 miles N of Newcastle). Owned by the Mutual Security Co. (1935). MRDS database stated accuracy for this location is 100 meters.
Mineralization is a vein deposit hosted in granodiorite, diorite, amphibolite, and schist. The ore body strikes NW and dips 70SW at a thickness of 0.91 meter. The gold-bearing vein is principally in granitic rock and is about 1 mile along strike. The veins are 2 to 3 feet thick and carry 1½ to 3% sulfides. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).
Workings include underground openings with a length of 167.64 meters and an overall depth of 146.3 meters and comprised of shafts, tunnels (adits ?) and drifts.
Production:: Logan, Clarence August (1936), Waring, Clarence A. (1917), and in Goodwin, Joseph Grant (1957).
Production statistics: Year: 1899 (period = 1896 to 1899) (estimate): 11 grams Au/metric ton.
No other production record was found.
Analytical data results: Concentrate assays: $17.55 to $255.00 (period values) Au/ton; $57.04 to $75.52 (period values) Ag/ton; Ore assayed 0.5 ounce Au & 245 ounces Ag/ton.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Copper Formula: Cu References: |
| ⓘ Native Gold Formula: Au |
| ⓘ Native Silver Formula: Ag References: |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
| ⓘ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S Description: Occurs with other sulfides. |
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 |
| ⓘ | Native Silver | 1.AA.05 | Ag |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| 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 | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Native Copper | Cu |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Ag | Silver | |
| Ag | ⓘ Native Silver | Ag |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS MRDS: | 10007681 |
|---|
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 #0060610062
