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Old Timer Mine, Cababi Mining District (Comobabi Mining District), Comobabi Mountains, Tohono O'odom (Papago) Indian Reservation, Pima Co., Arizona, USAi
Regional Level Types
Old Timer MineMine
Cababi Mining District (Comobabi Mining District)Mining District
Comobabi MountainsMountain Range
Tohono O'odom (Papago) Indian ReservationReservation
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
32° 3' 42'' North , 111° 55' 51'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Sells2,495 (2011)17.3km
Gu Oidak188 (2011)18.8km
Ali Chukson132 (2011)20.6km
Maish Vaya158 (2011)21.9km
Cowlic135 (2011)28.7km


Ref.: Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 112 (Table 4).

Arizona Bureau of Mines file data.

MRDS database Dep. ID file #10026804, MRDS ID #M000347; and. Dep. ID #10259305, MAS ID #0040190344.

A former small surface and underground Ag-Cu-Au mine located in the SW ¼ sec. 3, T.16S., R.4E. (protracted), 8½ miles W of Comobabi. Produced 1946-1949. Owned by Ernest Randolph; and the Picacho Mines, Inc.

Mineralization is a series of overlapping quartz-dolomite veinlike lenses containing native silver and spotty chalcocite and pyrite. Oxidized near the surface, in a fissure zone in Cretaceous (?) andesite flows.

Workings include an inclined shaft and pit. Worked during 1946-1949, producing a few tons of ore at about 28 oz. Ag/T and minor Cu & Au.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Chalcocite
Formula: Cu2S
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 112 (Table 4); Arizona Bureau of Mines file data.
Dolomite
Formula: CaMg(CO3)2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 112 (Table 4); Arizona Bureau of Mines file data.
Pyrite
Formula: FeS2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 112 (Table 4); Arizona Bureau of Mines file data.
Silver
Formula: Ag
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 112 (Table 4); Arizona Bureau of Mines file data.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Pyrite2.EB.05aFeS2
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2

List of minerals for each chemical element

CCarbon
C DolomiteCaMg(CO3)2
OOxygen
O DolomiteCaMg(CO3)2
MgMagnesium
Mg DolomiteCaMg(CO3)2
SSulfur
S ChalcociteCu2S
S PyriteFeS2
CaCalcium
Ca DolomiteCaMg(CO3)2
FeIron
Fe PyriteFeS2
CuCopper
Cu ChalcociteCu2S
AgSilver
Ag SilverAg

Other Databases

USGS MRDS Record:10026804

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
USA

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