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Copper Duke Mine, Copper Duke Hill, Tiptop Mine group (Tiptop Camp prospects/mines), Tiptop Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima Co., Arizona, USAi
Regional Level Types
Copper Duke MineMine
Copper Duke HillHill
Tiptop Mine group (Tiptop Camp prospects/mines)- not defined -
Tiptop MountainMountain
Helvetia- not defined -
Helvetia-Rosemont Mining DistrictMining District
Pima Co.County

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Latitude & Longitude (WGS84):
31° 52' 10'' North , 110° 47' 33'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Corona de Tucson5,675 (2011)10.8km
East Sahuarita1,622 (2006)15.2km
Sahuarita25,707 (2017)18.2km
Green Valley21,391 (2011)19.1km
Vail10,208 (2011)21.2km

‡Ref.: Copper Handbook (1904, 1905, 1907).

Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 92, 120-124.

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: 129 (Table 4).

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.

MRDS database Dep. ID file #10039401, MRDS ID #M050032.

A former small underground Cu-Ag-Au mine group located in the NE ¼ sec. 15, T.18S., R.15E., at the former Tiptop Camp, about ¾ mile north of Helvetia, just west of the Tiptop Mine, east side of Copper Duke Hill, a northwest foothill of Tiptop Mountain, and 28 miles SE of Tucson on private land. Discovered in the early 1870's and was located in 1898. Owned at times, or in part, by the Tip Top Copper Co.; American Smelting & Refining Co. (ASARCO); Chamrod; Forbes; Mattingly; Sierra Mining & Ranching Co.; Tip Top Mining Co.; and the D. & P. Mining Co.

Mineralization is irregular pockets, stringers, and pyrometasomatic replacement orebodies, mostly oxidized, with copper minerals, often associated with quartz stringers and seams in shattered, faulted, silicified, and silicated Paleozoic limestone close to a contact with underlying Paleozoic Bolsa Quartzite in a thrust-faulted klippe. One orebody is known as the main azurite orebody.

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 shallow shafts, tunnels crosscuts, a winze, and open cuts.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Mineral List

3 valid minerals.

Detailed Mineral List:

Formula: Cu3(CO3)2(OH)2
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 124.
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 124.
Formula: Cu2(CO3)(OH)2
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 124.

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O

List of minerals for each chemical element

H MalachiteCu2(CO3)(OH)2
H AzuriteCu3(CO3)2(OH)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
C MalachiteCu2(CO3)(OH)2
C AzuriteCu3(CO3)2(OH)2
O MalachiteCu2(CO3)(OH)2
O AzuriteCu3(CO3)2(OH)2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu MalachiteCu2(CO3)(OH)2
Cu AzuriteCu3(CO3)2(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O

Other Databases

USGS MRDS Record:10039401

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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