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Renfro group (Roman Eagle shaft; Pinal Development Co. claims), Dripping Springs, Dripping Springs Mining District, Gila County, Arizona, USAi
Regional Level Types
Renfro group (Roman Eagle shaft; Pinal Development Co. claims)- not defined -
Dripping SpringsGroup of Springs
Dripping Springs Mining DistrictMining District
Gila CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
33° 8' 50'' North , 110° 52' 38'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Kearny2,038 (2017)10.5km
Hayden650 (2017)18.0km
Winkelman346 (2017)20.3km
Dudleyville959 (2011)21.6km
Top-of-the-World231 (2011)24.9km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Gila County Gem & Mineral SocietyMiami, Arizona28km
Mindat Locality ID:
132906
Long-form identifier:
mindat:1:2:132906:6
GUID (UUID V4):
f5fa7416-2874-4991-ae16-e4a0e88e20af


A former underground Cu-Au-Ag mine located on 47 claims (1922), in the NW¼NW¼ sec. 25, T3S, R14E, about 1 mile W of Dripping Springs and 1 mile NNW of Manhattan Mountain, 1¼ miles E of Troy Ranch and ¼ mile E of the Pinal County line, on BLM-administered land. Produced 1913-1918. The Pinal Development Company and Mr. F.M. Pool were past operators.

Mineralization is a 15 foot thick ore horizon on limestone, hosted in the Mescal Limestone and diabase. Ore control was a diabase-limestone contact with the diabase underlying the limestone; also along small fault fissures. Ore concentration was along the small shear zones with the mineralization associated with a Lower Cretaceous-Tertiary intrusive period. An associated rock unit is rhyodacite.

Area structures include the Late Cretaceous Rattler Granodiorite intrusion, which is 1/8 mile W of the mine. Mineralization and/or fissuring is probably related to this intrusion. The rhyodacite post-dates this intrusion. The downthrown side on most of the fractures in the area is the southern side.

Workings total 762 meters in length and include a main tunnel 1600 feet long, and a depth of 600 feet (Mines Handbook, 1922). The ADMR report (1907) describes various small shafts. There are 220 feet of workings on the Golden Eagle claim, A 150 foot tunnel, and a 43 foot deep shaft in granite.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuprite
Formula: Cu2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1

List of minerals for each chemical element

HHydrogen
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
OOxygen
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
O CupriteCu2O
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
SiSilicon
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
CuCopper
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cu CupriteCu2O

Other Databases

Link to USGS MRDS:10109792

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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References

 
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