Copper Standard Mine (Loss Brothers claims), White Horse Pass area, Silver Reef Mountains area, Chuichu area, Tat Momoli Mountains, Silver Reef Mining District, Pinal County, Arizona, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
32° 42' 39'' North , 111° 47' 37'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chuichu | 269 (2011) | 4.7km |
| Vaiva Vo | 128 (2011) | 12.5km |
| Arizona City | 10,475 (2011) | 12.5km |
| Casa Grande | 51,460 (2017) | 19.0km |
| Eloy | 17,059 (2017) | 22.9km |
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 |
|---|---|---|
| Pinal Gem and Mineral Society | Coolidge, Arizona | 39km |
Mindat Locality ID:
62543
Long-form identifier:
mindat:1:2:62543:1
GUID (UUID V4):
41d7a462-8d61-4e9d-acd7-452a6c82085b
A former underground Cu-Ag-Au mine located in the W½ sec. 25, T8S, R5E (Silver Reef Mountains 7.5 minute topo map), about 1½ miles SSW of White Horse Pass, about 3 miles SSW of Chuichu, on private land surrounded by Indian Reservation (claims are located along the SE slope of Silver Reef Mountains for the upper two thirds of sec. 25 and extend slightly into sec. 24). Discovered in 1895 by the Loss brothers (?). Closed in 1965. Owned by J. A. Barnhard (1960); operated by the Powdered Metals Corp. (1968). Claims include the Chicago; St Louis; Summit; Cowboy; Crown; Esperanza; and Millsite, all patented claims (1968). Additional names which apply to this locality: Esperanza MS 1698 patented claim, Standard Copper Co. of Arizona group; St Louis claim; Chicago claim; Cow Boy MS 1698 Patented claim; Black Crator; Summit MS 1698 claim; Crown MS 1698 claim.
Mineralization involves fractures in andesite. The ore body is 9.14 meters thick and 1219.2 meters long. Ore concentration was hydrothermal alteration.
Area structures include andesite bedding with a NNE strike and almost vertical dip to the east. Tertiary volcanic field, with blocks faulted against Precabrian Ruin (Oracle) Granite; E-W and NW-SE normal falts i a 2 mile radius both north and west of the mine.
Workings were limited to the Esperanza and Cowboy claims; on the Esperanza claim there is a perpendicular (???) shaft of 165 feet and a 250 foot shaft with vertical and inclined sections. The longer (?) shaft has drifts at the 100 foot level, 200 foot level and 250 foot level. There are two openings on the Cowboy claim: a short tunnel leading to a shallow shaft.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chrysocolla Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Chrysocolla | 9.ED.20 | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| O | Oxygen | |
| O | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Al | Aluminium | |
| Al | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Si | Silicon | |
| Si | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| Cu | Copper | |
| Cu | ⓘ Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
Other Databases
| Link to USGS MRDS: | 10109773 |
|---|
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
- Mazatzal DomainDomain
USA
- Arizona
- ⭔Tohono O'odham ReservationReservation
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
