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Tres Amigos Mine (White Gold #3 Mine), Oro Blanco area mines (Oro Blanco Mine group), Oro Blanco Mining District (Ruby Mining District), Oro Blanco Mountains, Santa Cruz County, Arizona, USAi
Regional Level Types
Tres Amigos Mine (White Gold #3 Mine)Mine
Oro Blanco area mines (Oro Blanco Mine group)Group of Mines
Oro Blanco Mining District (Ruby Mining District)Mining District
Oro Blanco MountainsMountain Range
Santa Cruz CountyCounty
ArizonaState
USACountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
31° 25' 1'' North , 111° 15' 0'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Arivaca695 (2011)19.2km
Tumacacori-Carmen393 (2015)26.4km
Rio Rico18,962 (2011)26.6km
Aduana del Sásabe1,295 (2018)28.7km
Tubac1,191 (2011)29.1km
Mindat Locality ID:
34072
Long-form identifier:
mindat:1:2:34072:5
GUID (UUID V4):
26000330-63db-4641-bcdc-4ec4ac9d45a5


‡Ref.: Keyes, Charles (1923) Tres Amigos gold veins of Arizona: Pan-American Geologist: 39(2): 159-160.

Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 190-191.

Knight, L.H., Jr. (1970) Structure and mineralization of the Oro Blanco mining district, Santa Cruz County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 172 p., 7 sheets, scales 1:1,200, 1:6,000, 1:16,000, 1:24,000, 1:60,000, 1:62,500, and 1:358,000.

Yeend, Warren (1973).

Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 68 (Table 4).

Newsmine - Oro Blanco Resources Corp. press release 2/21/1997.

Santa Cruz County Recorder's office records.

Arizona Bureau of Mines card file Santa Cruz County.

MRDS database Dep. ID file #10039542, MRDS ID #M050249; and, Dep. ID #10210611, MAS ID #0040230084.

A former small underground Au-Ag-Pb-Cu mine (1:10) located in the NE ¼ sec. 19, T.23S., R.11E., about 4 miles SW of Ruby. Produced 1894-1904, 1932-1942 & closed 1960. Owned at times, or in part, by the Oro Blanco Mining Co.; Fernald; Daniels; Artesia Investment Co.; and the Oro Blanco Mines Co. Operated by Mr. Noon (1960). Owned by the Legend Mines Group (early 1933- ). Operators included Don Dale (1938-1941), Beck (1937), L.E. Moore (1935), E. Smith (1933), the Oro Blanco Mining Co., and the Artesia Investment Co.

Mineralization is irregular, lensing, nearly vertical fissure zone of brecciated and pulverized Jurassic volcanic tuff cemented by finely crystalline quartz containing fine grained gold and silver. The fault zone strikes N.30ºW. For 475 feet the adit is in andesite that, northward, gives way to decomposed, sericitized diorite. Stopes are in lenticular bodies of brecciated to pulverized country rock. This material is considerably sericitized and locally contains abundant iron and manganese oxides. Gold seems more abundant in concentrations of the iron and manganese oxides. Oxidation was supergene enrichment.
The host rock unit is the Cobre Ridge Tuff (welded tuff). Associated rock units include the Sidewinder Quartz Monzonite. The breccia zone represents fluidized country rock fragments intruded into pre-existing features. Breccia zones cut quartz sulfide veins and are the youngest mineralization in the district - may be equivalent in age to NW-trending faults.

Workings include a adit reported to be 2,000 feet long, 4 winzes, two of which are about 100 feet deep, plus 3 stopes - 60 feet high - 35 feet long - maximum size - all within 50 feet of the surface. Sulfides were not found because development has not penetrated beyond the oxidized zone. Real production unknown.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 9 - Silicates
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
OOxygen
O MuscoviteKAl2(AlSi3O10)(OH)2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AuGold
Au GoldAu

Other Databases

Link to USGS MRDS:10039542

Other Regions, Features and Areas containing this locality

Mexico
North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
 
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