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North Silver Bell Mine, Silver Bell Mining District, Silver Bell Mountains, Pima Co., Arizona, USAi
Regional Level Types
North Silver Bell MineMine
Silver Bell Mining DistrictMining District
Silver Bell MountainsMountain Range
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
32° 26' 26'' North , 111° 31' 56'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Avra Valley6,050 (2011)20.3km
Red Rock169 (2011)24.5km
Nelson259 (2011)24.7km
Marana41,315 (2017)28.8km
Picture Rocks9,563 (2011)28.8km


Ref.: Banks, N.G. (1976), Field Examination (North Silver Bell Mine).

Banks, N.G., and Dockter, R.D. (1976) Reconnaissance geologic map of the Vaca Hills quadrangle, Arizona [Koht Kohl Hill, Queens Well, Silver Bell West, and Gap Tank 7.5 min]: U.S. Geological Survey Miscellaneous Field Studies Map MF-793, 1 sheet, scale 1:62,500.

Guilbert, J.M. (1979) Society of Economic Geologists Porphyry Copper Field Symposium.

MRDS database Dep. ID file #10039895, MRDS ID #M051069.

A former small surface and underground Cu-Mo-Zn-Pb mine located in secs. 28 (and posibly 32 & 33), T11S, R8E, 1 mile NW of the Silver Bell Mine. (Arizona File Listed Sec 28, Molybdenum File Listed Secs 32 & 33). Owned by Minerals Exploration (Union Oil) and ASARCO.

Mineralization is with an irregular oval ore body elongate NW, hosted in Dacite. Approximately 1 square mile of surface outcrop of low grade copper ore, mostly of chalcocite enrichment on pyrite with some oxide and molybdenite showings. Hematite in gossan (rather than jarosite or goethite) indicates the presence of a chalcocite blanket. Alteration includes potassic, phyllic, propylitic, and variable silicification. An associated rock unit is diorite.

Local structures include abundant close fractures.

Workings include miscellaneous minor pits and shafts. Production unknown, possibly none.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Alunite
Formula: KAl3(SO4)2(OH)6
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Baryte
Formula: BaSO4
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Chalcocite
Formula: Cu2S
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Chalcopyrite
Formula: CuFeS2
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Fluorite
Formula: CaF2
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Hematite
Formula: Fe2O3
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Molybdenite
Formula: MoS2
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.
Pyrite
Formula: FeS2
Reference: MRDS database Dep. ID file #10039895, MRDS ID #M051069.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Alunite7.BC.10KAl3(SO4)2(OH)6
Baryte7.AD.35BaSO4
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
Unclassified Minerals, Mixtures, etc.
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
H AluniteKAl3(SO4)2(OH)6
OOxygen
O AluniteKAl3(SO4)2(OH)6
O BaryteBaSO4
O Garnet GroupX3Z2(SiO4)3
O HematiteFe2O3
FFluorine
F FluoriteCaF2
AlAluminium
Al AluniteKAl3(SO4)2(OH)6
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
SSulfur
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S MolybdeniteMoS2
S PyriteFeS2
S AluniteKAl3(SO4)2(OH)6
S BaryteBaSO4
KPotassium
K AluniteKAl3(SO4)2(OH)6
CaCalcium
Ca FluoriteCaF2
FeIron
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe HematiteFe2O3
CuCopper
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
MoMolybdenum
Mo MolybdeniteMoS2
BaBarium
Ba BaryteBaSO4

Other Databases

USGS MRDS Record:10039895

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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