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Line Boy Mine, Line property, Washington Camp-Duquesne Mining District, Patagonia Mining District, Patagonia Mountains, Santa Cruz Co., Arizona, USAi
Regional Level Types
Line Boy MineMine
Line propertyProperty
Washington Camp-Duquesne Mining DistrictMining District
Patagonia Mining DistrictMining District
Patagonia MountainsMountain Range
Santa Cruz Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
31° 20' 8'' North , 110° 41' 25'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Kino Springs136 (2011)11.8km
Francisco Miguel Cárdenas Valdez (Mascareñas)541 (2014)11.9km
Santa Cruz1,038 (2018)14.4km
Beyerville177 (2011)18.9km
Miguel Hidalgo640 (2018)21.6km


A former small underground Cu-Ag-Au-Mo-Fe-Li-V mine located on 11 unpatented claims in the SE¼ sec. 22, T24S, R16E, about 3/4 mile SW of the Benton Mine, just north of post 113 of the international boundary, S of Duquesne, on National Forest land. Former owners included Capt. O'Connor (1910); Mr. Don Hamerly; and, Mr. Haverly.

Country rock is the gray quartz monzonite which is intruded by a small stocklike mass of granite porphyry that trends north and is about 300 feet wide. From the mass of granite porphyry near the middle of the claim a 10 foot thick dike extends to the WNW and dips steeply to the north. Much white mica is developed in the quartz monzonite near the contact.

Mineralization is a deposit with an ore zone 1.83 meters wide. A 10 foot dike extends from a granite porphyry mass to the NW and dips steeply to the N. A sheet of specularite 3 feet wide follows the hanging wall side of the dike. Considerable amounts of white mica developed in quartz monzonite near the contact. The metallic minerals pyrite, chalcopyrite, and molybdenite, with a little bornite and films of chalcocite, are particularly abundant along the contact of the two rocks and are concentrated in joint planes and fissures, locally with a little associated quartz in small stringers and veins, and the adjoining quartz monzonite is partly impregnated with them. Along the hanging wall side of the dike occurs a sheet of specularite 3 feet wide. Ore control was the contact of a porphyry dike and quartz monzonite, joint planes and fissures. Ore concentration was precipitation from thermal solutions whose circulation accompanied or followed intrusions. Alteration is silicification and sericitization.

An orebody encountered in 1910 is a 6 foot wide vein carrying 11% to 24% Cu. The ore contains principally chalcopyrite, with 15% to 20% of bornite.

Workings include 3 shafts and 2 tunnels totalling 56.39 meters in length and 24.38 meters in depth. Two of the shafts, each 50 feet deep, being at the top of the hill and the third, 80 feet deep, at the north base of the hill. One tunnel is 65 feet long and follows the north or hanging wall side of the dike, the other tunnel is 120 feet long.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 valid minerals.

Detailed Mineral List:

Bornite
Formula: Cu5FeS4
Reference: Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 24, 40; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347-348.
Calcite
Formula: CaCO3
Reference: MRDS database Dep. ID file #10026975, MRDS ID #M001446.
Chalcocite
Formula: Cu2S
Description: Occurs as films.
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347.
Chalcopyrite
Formula: CuFeS2
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347-348.
Hematite
Formula: Fe2O3
Description: Occurs as a 3 foot (90 cm) thick sheet on the hanging wall side of the dike.
Reference: Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 40; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347-348.
Hematite var: Specularite
Formula: Fe2O3
Description: Occurs as a 3 foot (90 cm) thick sheet on the hanging wall side of the dike.
Reference: Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 40; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347-348.
Magnetite
Formula: Fe2+Fe3+2O4
Description: Occurs in considerable quantities.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 284; Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, AZ, Econ.Geol.: 12: 237-269; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 39.
Magnetite var: Lodestone
Formula: Fe2+Fe3+2O4
Description: Occurs in considerable quantities.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 284; Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, AZ, Econ.Geol.: 12: 237-269; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 39.
Molybdenite
Formula: MoS2
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347; Galbraith, F.W. (1947), Minerals of AZ, AZ Bull. Mines Bull. 153: 25.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10026975, MRDS ID #M001446.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10026975, MRDS ID #M001446.
Pyrite
Formula: FeS2
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347.
'Zinnwaldite'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 430; Wilson, E.D. & G.H. Roseveare (1949), Arizona nonmetallics: a summary of past production and present operations (2nd. ed.), AZ Bur. Mines Bull. 155; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 105.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
var: Lodestone4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Zinnwaldite'-

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 = 3:2
Bornite2.5.2.1Cu5FeS4
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 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Mixtures, etc.
Hematite
var: Specularite
-Fe2O3
Magnetite
var: Lodestone
-Fe2+Fe3+2O4
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Zinnwaldite'-

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O Magnetite (var: Lodestone)Fe2+Fe23+O4
O Hematite (var: Specularite)Fe2O3
O CalciteCaCO3
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MagnetiteFe2+Fe23+O4
O HematiteFe2O3
O MuscoviteKAl2(AlSi3O10)(OH)2
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S BorniteCu5FeS4
S MolybdeniteMoS2
S PyriteFeS2
S ChalcopyriteCuFeS2
S ChalcociteCu2S
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
FeIron
Fe Magnetite (var: Lodestone)Fe2+Fe23+O4
Fe BorniteCu5FeS4
Fe Hematite (var: Specularite)Fe2O3
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe MagnetiteFe2+Fe23+O4
Fe HematiteFe2O3
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
MoMolybdenum
Mo MolybdeniteMoS2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Schrader, F.C., and Hill, J.M. (1910,) Some occurrences of molybdenite in the Santa Rita and Patagonia Mountains, Arizona, in Contributions to economic geology (short papers and preliminary reports) 1909 - Part I--Metals and nonmetals except fuels: U.S. Geological Survey Bulletin 430, p. 154-163.
Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 347-348.
University of Arizona Bull. 41 (1916-17), Mineralogy of Useful Minerals in Arizona: 24, 40.
Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, Arizona, Economic Geology: 12: 237-269.
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 25.
Wilson, E.D. & G.H. Roseveare (1949), Arizona nonmetallics: a summary of past production and present operations (2nd. ed.), Arizona Bureau of Mines Bull. 155.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 39, 105.
Simons, F.S. (1974) Geologic map and sections of the Nogales and Lochiel
quadrangles, Santa Cruz County, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-762, 9 p., 1 sheet, scale 1:48,000.
Peirce, H. Wesley (1990), Arizona Geological Survey Industrial Minerals card file.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 284, 430.
USGS Lochiel Quadrangle topo map.
U.S. Bureau of Mines field notes.
U.S. Bureau of Mines Coronado National Forest Study Report.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.
Arizona Bureau of Mines card file Santa Cruz County.
Arizona Department of Mineral Resources Line Boy Mine file.
MRDS database Dep. ID file #10026975, MRDS ID #M001446; and, Dep. ID #10259249, MAS ID #0040230448.

Other Databases

USGS MRDS Record:10026975

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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