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Dura Mine (Dura Mine group; International Mine; Old Contest Mine), Mount Benedict, Nogales Mining District (Gold Hill Mining District), Santa Cruz County, Arizona, USAi
Regional Level Types
Dura Mine (Dura Mine group; International Mine; Old Contest Mine)Mine
Mount BenedictMountain
Nogales Mining District (Gold Hill Mining District)Mining District
Santa Cruz CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
31° 23' 34'' North , 110° 54' 47'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Beyerville177 (2011)3.3km
Nogales20,252 (2017)6.2km
Nogales212,533 (2018)9.8km
Kino Springs136 (2011)10.3km
Rio Rico18,962 (2011)10.6km
Mindat Locality ID:
33927
Long-form identifier:
mindat:1:2:33927:9
GUID (UUID V4):
90bc158d-1d1b-43d3-a2cf-2fd0fa2fb988


‑Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 350-351.

Schrader, F.C. (1919), Quicksilver deposits of the Phoenix Mountains, USGS Bull. 690-D: 95-109.

Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 22.

Simons, F.S. (1974) Geologic map and sections of the Nogales and Lochiel quadrangles, Santa Cruz County, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-762, 9 p., 1 sheet, scale 1:48,000.

Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 60 (Table 4).

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 382.

U.S. Bureau of Mines file data-cluster #30 - Dura Mine group.

U.S. Bureau of Mines field notes, AU9.

Arizona Bureau of Mines card file Santa Cruz County.

MRDS database Dep. ID file #10046334, MRDS ID #M241293; and, Dep. ID #10283466, MAS ID #0040230052.

A former small underground Au-Pb-Ag-Sb-Mo mine located on 3 claims (Dura claim, XXX claim, and the Yankee Girl claim) in the SE ΒΌ sec. 28 and in the NEΒΌNEΒΌ sec. 33, T.23S., R.14E., 4Β½ miles NNE of Nogales, on a ridge 0.7 miles from the summit (elevation 4565), and on the ESE slope of Mount Benedict, just W of the Uncle Sam Mine, on private land. Owned by Mr. Litchliter (prior to 1915). Owned by J. C. Gleason, of Cortland, AZ (1915). Past operators include both B. Litchliter and J. Gleason.

Mineralization is lensing vein in a shear zone in altered Jurassic quartz monzonite with brecciated and crudely banded quartz, quartz stringers and altered wall rock. Irregular pockets and impregnations of lead and copper primary and secondary ore minerals. Associated with a pyritized lamprophyric dike. The ore zone is 0.61 meters thick, strikes WNW and dips steeply to the N. An associated rock unit is the Quartz Monzonite of Mount Benedict. Ore control was lensing veins in an irregular shear zone. Ore concentration was secondary enrichment. Alteration is minor.

The fault fissure vein strikes WNW in the quartz monzonite and is seemingly the same vein as that of the Uncle Sam Mine. At the surface the vein dips to the south, but in depth, it dips steeply to the north. It is about 2 feet in maximum width. The filling consists of quartz and crushed, altered, and partly silicified country rock, with which is associated a dark dioritic pyrite-bearing dike rock and a little black calcite. The vein is locally brecciated and crudely banded with quartz stringers that contain some ore and together with the ore impregnate and replace the rock.

Local structures include numerous NW-trending aplitic dikes and a major fault trending N-S.

Workings include 2 shafts and a 270 foot tunnel that contains a 40 foot winze and stopes, all totaling about 1,000 feet of work. Worked by Mexicans (XXX claim) as early as the 1840's and intermittently up to the 1900's. Possibly up to 100 tons of picked ore had high values in Au,Pb & Ag. Five percent of ore value is free gold, the remainder is chiefly lead and silver. Some ore shipped carried 60% Pb.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

7 valid minerals.

Detailed Mineral List:

β“˜ Cerussite
Formula: PbCO3
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ Galena
Formula: PbS
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Pyrite
Formula: FeS2
β“˜ Stibnite
Formula: Sb2S3
β“˜ Wulfenite
Formula: Pb(MoO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Galena2.CD.10PbS
β“˜Stibnite2.DB.05Sb2S3
β“˜Pyrite2.EB.05aFeS2
Group 5 - Nitrates and Carbonates
β“˜Cerussite5.AB.15PbCO3
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Wulfenite7.GA.05Pb(MoO4)

List of minerals for each chemical element

HHydrogen
Hβ“˜ MalachiteCu2(CO3)(OH)2
CCarbon
Cβ“˜ CerussitePbCO3
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ CerussitePbCO3
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ WulfenitePb(MoO4)
SSulfur
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ GalenaPbS
Sβ“˜ PyriteFeS2
Sβ“˜ StibniteSb2S3
FeIron
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ PyriteFeS2
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ MalachiteCu2(CO3)(OH)2
MoMolybdenum
Moβ“˜ WulfenitePb(MoO4)
SbAntimony
Sbβ“˜ StibniteSb2S3
PbLead
Pbβ“˜ CerussitePbCO3
Pbβ“˜ GalenaPbS
Pbβ“˜ WulfenitePb(MoO4)

Other Databases

Link to USGS MRDS:10046334

Localities in this Region

  • Arizona
    • Santa Cruz County
      • Nogales Mining District (Gold Hill Mining District)
        • Mount Benedict
          • Dura Mine (Dura Mine group; International Mine; Old Contest Mine)

Other Regions, Features and Areas containing this locality

Mexico
North America
North America PlateTectonic Plate

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