Trinity River placer, Douglas City, Weaverville District, Klamath Mountains, Trinity County, California, USAi
| Regional Level Types | |
|---|---|
| Trinity River placer | Placer |
| Douglas City | City |
| Weaverville District | Mining District |
| Klamath Mountains | Mountain Range |
| Trinity County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
40° 40' 46'' North , 122° 55' 49'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Douglas City | 713 (2011) | 3.3km |
| Weaverville | 3,600 (2011) | 5.8km |
| Lewiston | 1,193 (2011) | 10.8km |
| Junction City | 680 (2011) | 12.0km |
| French Gulch | 346 (2011) | 24.7km |
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 |
|---|---|---|
| Shasta Gem & Mineral Society | Redding, California | 47km |
Mindat Locality ID:
96954
Long-form identifier:
mindat:1:2:96954:8
GUID (UUID V4):
671850d8-9fed-4864-b476-5cb1a35dec27
A placer Au-PGE (Pt-Ir-Ru-Os) deposit located in sec. 29, T33N, R9W, MDM, 3.3 km (2.1 miles) NNE of Douglas City (??), in the main channel of the Trinity River. MRDS database stated accuracy for this location is 100 meters.
NOTE: The supposed (and likely) location of this placer does not agree with the geographic coordinate sets presented by both MRDS files. File #10072347 would seem to be less accurate. The coordinates presented by file #10280893 place the locality on the (high) divide between Weaver Creek and the Trinity River, missing the river by perhaps 1,000+ feet (to the W). The distances from Douglas City would therefore be inaccurate.
Mineralization is placer Au & PGE's hosted in river gravels (deposit = stream placer Au deposit). Local rocks include schist of various types and ages, unit 7 (Klamath Mountains).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Iridium Formula: (Ir,Os,Ru) |
| β Iridium var. Osmiridium Formula: (Ir,Os,Ru) |
| β Iridium var. Ruthenosmiridium Formula: (Ir,Os,Ru) |
| β 'Iron-Platinum alloy' Formula: (Pt,Fe) |
| β Laurite Formula: RuS2 |
| β Osmium Formula: (Os,Ir,Ru) |
| β Osmium var. Iridosmine Formula: (Os,Ir) |
| β Platinum Formula: Pt |
| β Rutheniridosmine Formula: (Ir,Os,Ru) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Osmium | 1.AF.05 | (Os,Ir,Ru) |
| β | Rutheniridosmine | 1.AF.05 | (Ir,Os,Ru) |
| β | Osmium var. Iridosmine | 1.AF.05 | (Os,Ir) |
| β | Iridium | 1.AF.10 | (Ir,Os,Ru) |
| β | Platinum | 1.AF.10 | Pt |
| β | Iridium var. Ruthenosmiridium | 1.AF.10 | (Ir,Os,Ru) |
| β | var. Osmiridium | 1.AF.10 | (Ir,Os,Ru) |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Laurite | 2.EB.05a | RuS2 |
| Unclassified | |||
| β | 'Iron-Platinum alloy' | - | (Pt,Fe) |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | β Laurite | RuS2 |
| Fe | Iron | |
| Fe | β Iron-Platinum alloy | (Pt,Fe) |
| Ru | Ruthenium | |
| Ru | β Iridium | (Ir,Os,Ru) |
| Ru | β Laurite | RuS2 |
| Ru | β Osmium | (Os,Ir,Ru) |
| Ru | β Rutheniridosmine | (Ir,Os,Ru) |
| Ru | β Iridium var. Ruthenosmiridium | (Ir,Os,Ru) |
| Ru | β Iridium var. Osmiridium | (Ir,Os,Ru) |
| Os | Osmium | |
| Os | β Iridium | (Ir,Os,Ru) |
| Os | β Osmium | (Os,Ir,Ru) |
| Os | β Rutheniridosmine | (Ir,Os,Ru) |
| Os | β Iridium var. Ruthenosmiridium | (Ir,Os,Ru) |
| Os | β Iridium var. Osmiridium | (Ir,Os,Ru) |
| Os | β Osmium var. Iridosmine | (Os,Ir) |
| Ir | Iridium | |
| Ir | β Iridium | (Ir,Os,Ru) |
| Ir | β Osmium | (Os,Ir,Ru) |
| Ir | β Rutheniridosmine | (Ir,Os,Ru) |
| Ir | β Iridium var. Ruthenosmiridium | (Ir,Os,Ru) |
| Ir | β Iridium var. Osmiridium | (Ir,Os,Ru) |
| Ir | β Osmium var. Iridosmine | (Os,Ir) |
| Pt | Platinum | |
| Pt | β Iron-Platinum alloy | (Pt,Fe) |
| Pt | β Platinum | Pt |
Other Databases
| Link to USGS MRDS: | 10280893 |
|---|
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 #0061050559
