Grand Prize Mine (Grand View Mine), Cottonwood Wash, Cottonwood Peak area, Horse Ranch Mining District, Pinal County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Grand Prize Mine (Grand View Mine) | Mine |
| Cottonwood Wash | Wash |
| Cottonwood Peak area | Area |
| Horse Ranch Mining District | Mining District |
| Pinal County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
32° 53' 9'' North , 110° 57' 11'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Dudleyville | 959 (2011) | 19.1km |
| Kearny | 2,038 (2017) | 19.4km |
| Winkelman | 346 (2017) | 20.4km |
| Hayden | 650 (2017) | 20.5km |
| Mammoth | 1,487 (2017) | 34.4km |
A former underground Cu-Ag-Au mine located in the NW¼NE¼ sec. 25, T6S, R13E, about 2¾ miles NNW of Cottonwood Hill, on Cottonwood Wash, 1¼ miles S of Tecolote Ranch, on BLM-administered land. Produced 1931-1954. Operators included: E. H. Moores and Sons; W.C. Best; Orval Corman (1954); Charles S. Booth; William G. Fox (1936); and, B.H. Numeyer (1935).
Mineralization is a vein deposit hosted in Ruin (Oracle) Granite. Ore body is tabular, strikes N57E and dips 83SE. There are many veins and streaks, the widest of which is about 3 Feet wide. The mineralization is associated with a Cretaceous-Tertiary intrusive period - easterly striking faults and shears occur throughout the area.
Area structures include NNW-trending thrust faulting through the area. The main fault is the Ripsey Was Fault one mile east. Cretaceous-Tertiary EE-trending hornblende porphyry dikes ½ mile south and SW.
Workings include 3 shafts, 1 - 50 feet deep, 1 - 100 feet deep, and 1 - 70 feet deep; 2 adits, 1 at the 50 foot level, 200 feet in length; and 1 at the 70 foot level, 120 feet in length.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS MRDS: | 10109781 |
|---|
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
- Southern Basin and RangeWide Rift
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