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Peer and Peerless group (Quijotoa Mine), Ben Nevis Mountain, Quijotoa Mining District, Quijotoa Mts, Pima Co., Arizona, USAi
Regional Level Types
Peer and Peerless group (Quijotoa Mine)- not defined -
Ben Nevis MountainMountain
Quijotoa Mining DistrictMining District
Quijotoa MtsMountain Range
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
32° 4' 14'' North , 112° 8' 47'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Maish Vaya158 (2011)10.9km
Pisinemo321 (2011)16.8km
Gu Oidak188 (2011)19.2km
Wahak Hotrontk114 (2011)24.1km
Santa Rosa628 (2011)29.8km


A former small surface and underground Ag-Au-Baryte-Gypsum mine group located in the SW¼ sec. 35, T15S, R2E (protracted), 6½ miles SSW of the Quijotoa Trading Post. Produced 1880-1892.

Mineralization is free gold with silver chlorides in oxidized quartz-calcite-barite-hematite pockets in Laramide rhyolite volcanics along a fault zone. The silver ore has baryte-lined fissure cavities-the largest is approximately 200 feet long, 20 feet high, and 20 feet wide.
Baryte was deposited by meteoric waters.

Workings include numerous small shafts, pits, and adits. Worked out in a short period in the 1880's. Production is estimated at some 50 or more tons of high-grade Au-Ag ore. Ag mine workings, no baryte production reported.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Baryte
Formula: BaSO4
Description: blades form matrix for galena crystals.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 128; Stewart, L.A. & A.J. Pfister (1960), Barite deposits of AZ, US Bur. Mines rept. Inv. 5651; Funnell, J.E. & E.J. Wolfe (1964), Compendium on nonmetallic minerals of AZ, Southwest Research Institute, San Antonio, TX.
Calcite
Formula: CaCO3
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 141 (Table 4); Stephens (1884); Stewart & Pfister (1960): 50-51; Arizona Bureau of Mines file data.
Chlorargyrite
Formula: AgCl
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 141 (Table 4); Stephens (1884); Stewart & Pfister (1960): 50-51; Arizona Bureau of Mines file data.
Galena
Formula: PbS
Habit: cubo-octahedral
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 128; Stewart, L.A. & A.J. Pfister (1960), Barite deposits of AZ, US Bur. Mines rept. Inv. 5651; Funnell, J.E. & E.J. Wolfe (1964), Compendium on nonmetallic minerals of AZ, Southwest Research Institute, San Antonio, TX.
Gold
Formula: Au
Description: As free lode gold.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 141 (Table 4); Stephens (1884); Stewart & Pfister (1960): 50-51; Arizona Bureau of Mines file data.
Gypsum
Formula: CaSO4 · 2H2O
Reference: MRDS database Dep. ID file #10026738, MRDS ID #M000021.
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Reference: MRDS database Dep. ID file #10026738, MRDS ID #M000021.
Hematite
Formula: Fe2O3
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 141 (Table 4); Stephens (1884); Stewart & Pfister (1960): 50-51; Arizona Bureau of Mines file data.
Quartz
Formula: SiO2
Reference: Knut Edvard Larsen collection (On galena specimen)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Gypsum7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Gypsum
var: Selenite
-CaSO4 · 2H2O

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
H Gypsum (var: Selenite)CaSO4 · 2H2O
CCarbon
C CalciteCaCO3
OOxygen
O CalciteCaCO3
O HematiteFe2O3
O BaryteBaSO4
O GypsumCaSO4 · 2H2O
O Gypsum (var: Selenite)CaSO4 · 2H2O
O QuartzSiO2
SiSilicon
Si QuartzSiO2
SSulfur
S BaryteBaSO4
S GalenaPbS
S GypsumCaSO4 · 2H2O
S Gypsum (var: Selenite)CaSO4 · 2H2O
ClChlorine
Cl ChlorargyriteAgCl
CaCalcium
Ca CalciteCaCO3
Ca GypsumCaSO4 · 2H2O
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
FeIron
Fe HematiteFe2O3
AgSilver
Ag ChlorargyriteAgCl
BaBarium
Ba BaryteBaSO4
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Stephens (1884).
Stewart, L.A. & A.J. Pfister (1960), Barite deposits of Arizona, US Bureau of Mines Report of Investigation 5651: 50-51.
Funnell, J.E. & E.J. Wolfe (1964), Compendium on nonmetallic minerals of Arizona, Southwest Research Institute, San Antonio, TX.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 141 (Table 4).
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
Peirce, H. Wesley (1990), Arizona Geological Survey Industrial Minerals card file.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 128.
USGS Quijotoa Mountains Quadrangle topo map.
Arizona Bureau of Mines file data.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10026738, MRDS ID #M000021; and, Dep. ID file #10105113, MRDS ID #TC10333; and, Dep. ID #10283454, MAS ID #0040190358; and, Dep. ID #10304977, MAS ID #0040190369.

USGS MRDS Record:10026738

Other Regions, Features and Areas containg this locality

North America
North America PlateTectonic Plate
USA

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