Huelsdonk placer, Hayward, West Belt, Mariposa County, California, USAi
Regional Level Types | |
---|---|
Huelsdonk placer | Placer |
Hayward | - not defined - |
West Belt | - not defined - |
Mariposa County | County |
California | State |
USA | Country |
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Latitude & Longitude (WGS84):
37° 36' 54'' North , 120° 20' 56'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Snelling | 231 (2011) | 13.2km |
Coulterville | 201 (2011) | 17.0km |
Bear Valley | 125 (2011) | 20.9km |
Greeley Hill | 915 (2011) | 24.1km |
Groveland | 601 (2011) | 26.8km |
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 |
---|---|---|
Mariposa Gem & Mineral Club | Mariposa, California | 37km |
Mindat Locality ID:
82227
Long-form identifier:
mindat:1:2:82227:4
GUID (UUID V4):
b5bb8e7b-bb72-4ebf-86f9-f43a0b4992cd
A former placer Au-PGE (Pt) mine located 3.7 km (2.3 miles) SSE of Hayward, along Browns Creek near the Butterfly Mine (about 7 miles NNW of Merced Falls). Owned by W. A. Huelsdonk. MRDS database stated accuracy for this location is stated to be 10,000 meters (an unreasonable value considering that the location is described in greater detail).
Mineralization is a placer Au-PGE deposit (Deposit model code: 119; USGS model code 39a; BC deposit profile C01. C02; Deposit model name: Placer Au-PGE; Mark3 model number 54), hosted in Holocene-Eocene stream sediment deposits (Ione Formation gravel, conglomerate). Ore control was stream hydraulics. Local rocks include Jurassic marine rocks, unit 1 (Western Sierra Nevada and Western Klamath Mountains).
Production information: Some Au and a little Pt in 1926. Unverified by-product Pt production.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ Gold Formula: Au |
ⓘ Platinum ? Formula: Pt Description: Placer material. Unverified production. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Gold | 1.AA.05 | Au |
ⓘ | Platinum ? | 1.AF.10 | Pt |
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 #0060430022