Midnight Mine, Greenlee County, Arizona, USAi
Regional Level Types | |
---|---|
Midnight Mine | Mine |
Greenlee County | County |
Arizona | State |
USA | Country |
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Latitude & Longitude (WGS84):
33° 4' 18'' North , 109° 18' 24'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
131481
Long-form identifier:
mindat:1:2:131481:9
GUID (UUID V4):
8f2cb19d-6903-4459-96c4-4f5067a66074
Other/historical names associated with this locality:
Keating Mine; Hormeyer Mine; Wonderful Mine; Modoc No. 2 patented claim MS 4577; Patented claim MS 1545
A former surface and undergrond Cu-Au-Pb-Ag-Mn mine located on one patented lode claim, in the SE¼NE¼ sec. 24, T4S, R29E, 2.0 miles N of Clifton on the W side of the San Francisco River, at the end of the jeep trail that leaves highway 191 (old highway 666) at Rock House Canyon and heads NE, on private land. Discovered by Anwell Lafaves in 1903. Produced 1910-1942. Owned by Ms Harriet Sweeting of Clifton, AZ (1960). Operators included Mr. Ed C. Rozell.
Mineralization is a flat tabular ore body hosted in the Modoc Limestone, Morenci Shale, and the Longfellow Limestone. It is 182.88 meters long, with a depth to bottom of 60.96 meters, and is 60.96 meters thick, strikes NE and dips 20NW. Continuous mineralized layers penetrate hanging and foot walls to form irregular bodies. Dimension of the deposit were estimated from surface cuts. An associated rock unit is the Morenci Granite Porphyry. Ore control was a NE-trending fault and intrusive quartzite dike cutting contacts of limestone and sandstone. Ore concentration was secondary enrichment concentration along sedimentary bedding planes and the quartzite dike. The deposit is a replacement of interbedded sandstone and limestone sequences.
Area structures include porphyry dikes cutting sedimentary sequences; NE-trending faults; and intrusive igneous dikes associated with the Morenci Porphyry stock.
Tectonic component is the transition zone between the Basin and Range and Colorado Plateau Provinces.
Workings included 2 surface stopes with dimensions of 50 feet by 40 feet by 40 feet, 3 tunnels, and 2 crosscuts. Workings total 283.46 meters in length.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
ⓘ Galena Formula: PbS |
ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
ⓘ 'Limonite' |
ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Sphalerite | 2.CB.05a | ZnS |
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Galena | 2.CD.10 | PbS |
Group 9 - Silicates | |||
ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Unclassified | |||
ⓘ | 'Limonite' | - | |
ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | Oxygen | |
O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | ⓘ Garnet Group | X3Z2(SiO4)3 |
Al | Aluminium | |
Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | Silicon | |
Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Galena | PbS |
S | ⓘ Sphalerite | ZnS |
Ca | Calcium | |
Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | ⓘ Sphalerite | ZnS |
Pb | Lead | |
Pb | ⓘ Galena | PbS |
Other Databases
Link to USGS MRDS: | 10088899 |
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Other Regions, Features and Areas containing this locality
North America
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
USA
- Arizona
- Greenlee County
- Copper Mountain Mining District (Clifton-Morenci Mining District)Mining District
- Shannon MountainsMountain Range
- Greenlee County
- Gila MountainsMountain Range
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