Mowry Mine (Patagonia Mine; Enterprise Mine; Phoenix Mine), Mowry Hill, Mowry Wash, Mowry, Patagonia Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USAi
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Latitude & Longitude (WGS84):
31° 25' 41'' North , 110° 42' 11'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Kino Springs | 136 (2011) | 12.5km |
Patagonia | 890 (2017) | 13.3km |
Beyerville | 177 (2011) | 17.2km |
Francisco Miguel CΓ‘rdenas Valdez (MascareΓ±as) | 541 (2014) | 19.1km |
Santa Cruz | 1,038 (2018) | 23.9km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
Club | Location | Distance |
---|---|---|
Huachuca Mineral and Gem Club | Sierra Vista, Arizona | 40km |
Mindat Locality ID:
16701
Long-form identifier:
mindat:1:2:16701:6
GUID (UUID V4):
97fbed46-dc09-41ff-8f9b-84ff6fff9e31
A former small underground Pb-Ag-Zn-Cu-Au-Mn (Be-Mo-V-Sb) mine located on 21 patented claims totalling 420 acres in the NWΒΌ (SΒ½SWΒΌ ?) sec. 15, T.23S., R.16E. (protracted), 1.5 miles SE of American Peak, in the south base of Mowry Hill on the north side of Mowry Wash, 4 miles North of Duquesne (Washington Camp), 5 miles South of the Trench Mine, 9 miles south of Patagonia, and about 75 miles South of Tucson, at about 5,500 feet of altitude, on private land. Started before the civil war, worked in the 1850's by Mexicans. Relocated and reopened about 1857-58 by Lt. Sylvester Mowry. Produced 1864-1952. Owned at times, or in part, by Col. Titus & Brevoort (1859); Lt Sylvester Mowry bought it in 1860 for $25,000; Fish, Bennet & Co. (from June, 1875); Fish & Silverberg; Steinfeld & Swain; Mowry Mines Co.; Santa Cruz Mining & Smelting Co.; Mitchell; Stone; B. Logan; K. Peterson; T.L. Woodruff; G.M. Grant & Woodruff; F. Metler (Metter); the U.S. Mining And Smelting Co. (1967); J.W. Douglas; R.S. Ewell; J.N. Moore; Randall; Lord; Doss; H.T. Titus; Silverberg and Steinfeld (1890-1901); General Carleton (1862-1864); Mowry Mines Co. (1904-1907); A.J. Hazeltine; Fish; Stone; J. Curtis; White and Lovelace; M. Encinas; H. Miller; F.J. Gallagher; Squires; W.J. Mitchell; Standard Metals Co.; Mowry Exploration Co.; Southwest Metallurgical Industries (1955).
Mineralization is argentiferous galena and secondary minerals in tabular replacement orebodies, with ferruginous and manganiferous gangue, along a strong fault zone and associated fissures in Paleozoic limestone. The ore zone is 864.65 meters long, 6.1 meters wide, with a depth to bottom of 152.4 meters, striking N75E, dipping 80N. Deep oxidation and supergene enrichment produced high-grade lead-silver ore in the upper section. Pods and pockets of psilomelane and pyrolusite occur in fracture zones in the limestone. The ore contains little, if any, quartz and no zinc.
The mine is on an east-west fault contact between the Paleozoic limestone and the Mesozoic quartz monzonite. The fault, called the Mowry fault by Schrader & Hill, trends N.75ΒΊE. and dips 78ΒΊN. and seemingly is normal. The limestone occurs on the north or hanging wall side of the fault and the quartz monzonite on the south side. The limestone essentially composes the adjoining Mowry Hill, which rises about 300 feet above the mine and seems to represent the northern part of a low dome or anticline whose southern part has been cut off by the fault, for in the east slope of the hill, the rock dips 45ΒΊNE. At the top of the hill they dip to the north and in the west slope they dip to the northwest at about the same, or slightly less angles. Along the fault they dip 45ΒΊ to 70ΒΊN., away from the contact.
At some time later than the faulting the rocks and the fault were disturbed along a fault or shear zone about 200 feet in width, which strikes N.30ΒΊW., and stands about vertical and which, as shown on the Mowry fault at the mine, has offset the formations by a small horizontal displacement, the rock on the east being moved 45 feet to the south. To the east of this later fault, which will be referred to as the north-south fault, the limestone for a short distance strikes N.45ΒΊW. and dips 50ΒΊNE; west of it the strike is N.45ΒΊE. and the dip more regularly to the northwest at about 28ΒΊ. To the north up the slope the zone dies out just below the top of Mowry Hill, apparently pasing into undisturbed cherty limestones that strike N.85ΒΊW. and dip 43ΒΊN. On the south, where the fault zone is about 250 feet wide, it is composed of a red iron-stained silicified breccia, apparently composed mainly of chert pebbles, which at the top of the hill seems to run into a bed of dark gray cherty limestone that continues northwestward down the west slope of the hill.
Away from the locally disturbed beds along the north-south fault the limestones are unaltered, dark blue-gray in color, thin to heavy bedded, and in places cherty. They aggregate at least 800 feet in thickness.
The limestone is much purer along the north-south fault than away from it, but along the Mowry fault some of the limestone has been metamorphosed to a fine-grained marble. The limestone contains also some interbedded quartzite.
The quartz monzonite south of the Mowry fault is a reddish-gray, massive, porphyritic granitoid rock with phenocrysts of feldspar and inch in diameter. It is composed mainly of orthoclase, oligoclase-andesine, and quartz in about equal amounts, the orthoclase including some microperthite and microcline. Considerable dark silicate is present, some as biotite but most as hornblende, which, however, is nearly all altered to heavy, dark green masses consisting principally of chlorite or allied decomposition products and oxide of iron. Apatite is present as an accessory mineral, and some pyrite, marcasite, and chalcopyrite occur as secondary minerals. The rock on the whole is considerably altered, especially the soda-lime feldspars, which are highly sericitized. It is classified with the Mesozoic intrusive rocks, and is regarded as intrusive into the limestone. For 60 to 100 feet back from the Mowry fault the rock is much altered and stained with iron and manganese, and along the fault it is sheared and crushed, and the nearly parallel shear planes dip steeply to the south, away from the fault.
Croppings extend interruptedly along the contact fissure for more than 1/2 mile. The deposit forms an almost continuous tabular sheet along a 600 foot stretch occupied by mine openings. Ore shoots occur at intervals along a NE-trending vein and pitch 40-60SW. Several deposits occur as mantos, following limestone for several 100's of feet beyond the shear zone.
The Mowry fault is offset by west end and east end faults; The west end fault block is laterally displaced 50 feet to the south. Copper and iron sulfides were first encountered on the 400 foot level. Coarsely crystalline galena occurs in lenses and masses embedded in manganiferous gangue. A large ore body and several sheets or veins of Mn are found at the 150 foot level. The lack of quartz and zinc is noteworthy. The quartz monzonite is underlain by a gabbro intrusion at the 235 foot level.
Cropping out at several points in the camp southwest of the mine and seemingly intruding the limestone along the Mowry fault in the deep part of the mine, is a dark greenish or nearly black, massive, medium-grained, crystalline rock locally known as basalt, and in the mine, where it approximately parallels the fault and vein, it is known as the '500-foot lime dike.' It is actually an almost typical gabbro, composed mainly of labradorite or closely allied basic soda-lime feldspar, augite, or other pyroxene and contains considerable magnetite and iron, some biotite, and seemingly olivine, with accessory apatite. The rock on the whole is highly altered. The augite, whose abundance in places is indicated by the form of the crystal casts, is mostly changed to green amphibole, smaragdite, and chlorite, and the feldspars are greatly kaolinized and altered to epidote. Calcite and magnetite are present as secondary minerals, the former occurring both in isolated crystals or grains and in macroscopic veinlets and seams on joint planes and fracture lines, together with a few seams or veinlets of secondary quartz.
The manganese deposit is on the north or hanging wall side of an East-West fault contact between Paleozoic limestone and quartz monzonite. Gabbro intrudes the limestone along the fault. From surface the vein extends downward (500 feet) to the bottom of the mine in a continuous sheet and was ore-bearing almost throughout. Most of the orebodies; however, occur apparently as replacements of the adjacent limestone. The Mn + Fe formation is about 20% of the total orebody.
Tectonic elements include the Mowry Falt Block with downthrow to the north.
Workings include an 'old' shaft at 350 feet deep (1881), additional shafts and numerous tunnels and drifts. There are 15,000 feet of drifts, raises, and winzes connecting to the surface by at least 6 shafts. Developments included diamond drilling (1954-1955) by Ventures Ltd. of Cananda. This mine was probably worked by Jesuits and Mexicans prior to 1850 and later was mined up through 1952. Total estimated and reported production of Pb-Ag ore would be some 200,000 tons averaging about 4% Pb, 3 oz. Ag/T, and minor Cu, Zn, and Au. During WWI & WWII, some 7,500 long tons of about 25% Mn were shipped.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
β Acanthite Formula: Ag2S References: |
β Anglesite Formula: PbSO4 References: |
β Anglesite var. Silver-bearing Anglesite Formula: PbSO4 References: |
β Anorthite Formula: Ca(Al2Si2O8) Description: Occurs as labradorite-andesine in quartz monzonite in phenocrysts to 1 inch diameter. |
β Anorthite var. Labradorite Formula: (Ca,Na)[Al(Al,Si)Si2O8] Description: Occurs as labradorite-andesine in quartz monzonite in phenocrysts to 1 inch diameter. |
β Arsenopyrite Formula: FeAsS Description: Occurrence starts on the 400 level. References: |
β 'Bindheimite' Formula: Pb2Sb2O6O References: |
β Calcite Formula: CaCO3 |
β Cerussite Formula: PbCO3 |
β Cerussite var. Silver-bearing Cerussite Formula: PbCO3 with Ag |
β Chalcopyrite Formula: CuFeS2 References: |
β Cryptomelane Formula: K(Mn4+7Mn3+)O16 |
β Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) Description: A secondary mineral resulting from the alteration of feldspar in gabbro. |
β Galena Formula: PbS Description: Contains up to 3,800 oz. Ag/T. References: |
β Galena var. Silver-bearing Galena Formula: PbS with Ag Description: Contains up to 3,800 oz. Ag/T. References: |
β Hematite Formula: Fe2O3 References: |
β Jarosite Formula: KFe3+3(SO4)2(OH)6 |
β Kaolinite Formula: Al2(Si2O5)(OH)4 Description: An alteration product of feldspars; in country rocks and in ore croppings. |
β Magnetite Formula: Fe2+Fe3+2O4 Description: Occurs as a component of several country rocks. |
β Malachite Formula: Cu2(CO3)(OH)2 |
β Manganite Formula: Mn3+O(OH) |
β Marcasite Formula: FeS2 |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
β Orthoclase Formula: K(AlSi3O8) Description: Occurs as phenocrysts to 1 inch diameter in quartz monzonite; some is microperthitic and there is some microcline. |
β 'Psilomelane' Description: Occurs in replacement deposits in limestone with other manganese oxides, hematite & wad. References: |
β Pyrite Formula: FeS2 |
β Pyrolusite Formula: Mn4+O2 References: |
β Siderite Formula: FeCO3 |
β Vanadinite Formula: Pb5(VO4)3Cl Description: Occurrence begins on the 400 level. References: |
β 'Wad' |
β Wulfenite Formula: Pb(MoO4) References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
β | Acanthite | 2.BA.35 | Ag2S |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Galena var. Silver-bearing Galena | 2.CD.10 | PbS with Ag |
β | 2.CD.10 | PbS | |
β | Pyrite | 2.EB.05a | FeS2 |
β | Marcasite | 2.EB.10a | FeS2 |
β | Arsenopyrite | 2.EB.20 | FeAsS |
Group 4 - Oxides and Hydroxides | |||
β | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
β | Hematite | 4.CB.05 | Fe2O3 |
β | Pyrolusite | 4.DB.05 | Mn4+O2 |
β | 'Bindheimite' | 4.DH.20 | Pb2Sb2O6O |
β | Cryptomelane | 4.DK.05a | K(Mn4+7Mn3+)O16 |
β | Manganite | 4.FD.15 | Mn3+O(OH) |
Group 5 - Nitrates and Carbonates | |||
β | Calcite | 5.AB.05 | CaCO3 |
β | Siderite | 5.AB.05 | FeCO3 |
β | Cerussite | 5.AB.15 | PbCO3 |
β | var. Silver-bearing Cerussite | 5.AB.15 | PbCO3 with Ag |
β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
β | Anglesite var. Silver-bearing Anglesite | 7.AD.35 | PbSO4 |
β | 7.AD.35 | PbSO4 | |
β | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
β | Wulfenite | 7.GA.05 | Pb(MoO4) |
Group 8 - Phosphates, Arsenates and Vanadates | |||
β | Vanadinite | 8.BN.05 | Pb5(VO4)3Cl |
Group 9 - Silicates | |||
β | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
β | Orthoclase | 9.FA.30 | K(AlSi3O8) |
β | Anorthite var. Labradorite | 9.FA.35 | (Ca,Na)[Al(Al,Si)Si2O8] |
β | 9.FA.35 | Ca(Al2Si2O8) | |
Unclassified | |||
β | 'Psilomelane' | - | |
β | 'Wad' | - |
List of minerals for each chemical element
Other Databases
Link to USGS MRDS: | 10109889 |
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Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North America
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
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