San Luis Wash tungsten placers (San Luis Wash placers; Arivaca placers), San Luis Wash, San Luis Mountains, Arivaca Mining District (Las Guijas Mining District), Las Guijas & San Luis Mountains, Pima County, Arizona, USAi
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Latitude & Longitude (WGS84):
31° 30' 6'' North , 111° 24' 0'' West
Latitude & Longitude (decimal):
Type:
Group of Placers
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Arivaca | 695 (2011) | 10.4km |
| Aduana del Sásabe | 1,295 (2018) | 14.3km |
| Tumacacori-Carmen | 393 (2015) | 34.5km |
| Tubac | 1,191 (2011) | 35.7km |
| San Miguel | 197 (2011) | 38.2km |
Mindat Locality ID:
35320
Long-form identifier:
mindat:1:2:35320:6
GUID (UUID V4):
b2bb57bc-9d5e-476b-82cb-3cfed6603e32
Ref.: Dale, V.B., Stewart, L.A., and McKinney, W.A. (1960), Tungsten deposits of Cochise, Pima, and Santa Cruz Counties., Arizona, U.S. Bureau of Mines Report of Investigation 5650: 105.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 106 (Table 4).
Heylmun, Edgar B. (1987) The San Luis Mountains, Arizona. California Mining Journal: 56(10): 71-75.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10048196, MRDS ID #M800267; and, Dep. ID #10109602, MRDS ID #M050238; and, Dep. ID #10210410, MAS ID #0040190383.
A former surface W-Au placer mine/deposit area located in the west-center of sec. 14, and sec. 15, T22S, R9E, 5½ miles SW of Arivaca. First produced 1952. Owned by L.G. Fernstrom; operated by Clarence Jarnigan. No details on size given. This placer is a short distance NE of the Easter group of claims and is probably derived from them.
Mineralization is spotty and irregular pockets of wolframite and scheelite in wash alluvial (gravel). The richest part of the wash is 3,500 feet in length and up to 22 feet in width with depth ranging from a few inches (4-5 cm) to three feet (1 meter).
Worked by dry washers. A few tens of pounds of WO3 concentrates were produced in the mid-1950's. In 1952 up to 60 tons of gravel per day were mined which contained up to 0.25% tungsten concentrates. Tests of placer show as much as 3% WO3 and dry-washer concentrate assayed 20% WO3.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Scheelite Formula: Ca(WO4) |
| ⓘ 'Wolframite Group' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | 'Wolframite Group' | 4.DB.30 va | |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Scheelite | Ca(WO4) |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
Other Databases
| Link to USGS MRDS: | 10048196 |
|---|
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North America
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
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