Pilot Mine, Helvetia-Rosemont Mining District, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Pilot Mine | Mine |
| Helvetia-Rosemont Mining District | Mining District |
| Pima County | County |
| Arizona | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
31° 51' 33'' North , 110° 45' 42'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Corona de Tucson | 5,675 (2011) | 11.9km |
| East Sahuarita | 1,622 (2006) | 18.3km |
| Sahuarita | 25,707 (2017) | 21.3km |
| Vail | 10,208 (2011) | 21.5km |
| Green Valley | 21,391 (2011) | 21.9km |
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 |
|---|---|---|
| Old Pueblo Lapidary Club | Tucson, Arizona | 43km |
| Tucson Gem and Mineral Society | Tucson, Arizona | 43km |
Mindat Locality ID:
57489
Long-form identifier:
mindat:1:2:57489:0
GUID (UUID V4):
70027ac3-5f98-4c1b-99ca-ae8dd136f049
Other/historical names associated with this locality:
Pilot claim
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 92, 117.
Arizona Bureau of Mines field notes (1971), vol. 1 no. 2.
Drewes, H.D. (1971) Geologic map of the Sahuarita quadrangle, southeast of Tucson, Pima County, Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-613, 1 sheet, scale 1:48,000.
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 13 (Table 1).
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10039493, MRDS ID #M050163; and, Dep. ID #10210408, MAS ID #0040190541.
A former surface and underground Cu-Ag claim located in the NW¼ sec. 24, T.18S., R.15E. (Sahuarita 15 minute topo map), and adjoins the Indian Club on the north, 28 miles SE of Tucson, on private land. Owned by ASARCO (1988-present). The Pilot claim is part of the patented Helvetia property owned by ASARCO (1992).
Mineralization is silicated, altered limestone in which the ore occurs in veinlets containing chalcocite and copper oxides. Rich carbonate ores occur at surface in the open cuts. The host rock units are the Horquilla Formation of limestone-siltstone; and the Escabrosa Limestone. Ore control was the shear zone.
Local structures include thrust and normal faulting, fracture zones, homoclinal. Regional trends include tilting and broad open folds in the south and extensive faulting in the north.
Workings include a 70 foot deep shaft and open cuts. No production record.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcocite Formula: Cu2S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcocite | Cu2S |
| Cu | Copper | |
| Cu | ⓘ Chalcocite | Cu2S |
Other Databases
| Link to USGS MRDS: | 10039493 |
|---|
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
- Santa Rita MountainsMountain Range
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.
