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Omega Extension Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Omega Extension Mine | Mine |
| Monument Mountain | Mountain |
| Helvetia | Town (Former) |
| Helvetia-Rosemont Mining District | Mining District |
| Pima County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
31° 51' 16'' North , 110° 46' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Corona de Tucson | 5,675(2011) | 12.3km |
| East Sahuarita | 1,622(2006) | 18.1km |
| Sahuarita | 25,707(2017) | 21.1km |
| Green Valley | 21,391(2011) | 21.3km |
| Sonoita | 818(2015) | 22.1km |
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:
36141
Long-form identifier:
mindat:1:2:36141:8
GUID (UUID V4):
6b47adbe-6103-40ec-b7cd-fc01ba6274dd
Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 92, 115-117.
Creasey, S.C. & G.L. Quick (1955), Copper deposits of part of Helvetia mining district, Pima County, Arizona, USGS Bull. 1027-F: 320.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 127 (Table 4).
Arizona Bureau of Mines file data.
A Cu-Ag-Pb-Zn-Au-Mn mine located in West-central sec. 24, T.18S., R.15E. Owned at times, or in part, by Zeckendorf; the Omega Copper Co.; and, McKay.
Mineralization is partly oxidized copper and minor lead-zinc minerals, largely soft and earthy, with manganese and iron oxides, and local massive chalcopyrite and pyrite, in replacement bodies with garnet-magnetite gangue along a fault zone between Paleozoic limestone and Precambrian granodiorite.
Workings include tunnel, shaft, and open cuts. One of the earliest mines, producing sporadically some 7,000 tons of ore averaging about 6% Cu, 1 oz. Ag/T and minor Pb from the 1880's to 1920.
Select Mineral List Type
StandardDetailedGalleryStrunzChemical 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 Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North America
- Sonoran DesertDesert
North America PlateTectonic Plate
North America Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
- Southern Basin and RangeWide Rift
USA
- Arizona
- Santa Rita MountainsMountain Range
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 byJolyon Ralph.
Privacy Policy -Terms & Conditions -Contact Us / DMCA issues -Report a bug/vulnerabilityCurrent server date and time: April 2, 2025 03:55:26 Page updated: January 5, 2025 20:44:03