Rain Mine

Elko County, Nevada, United States

GoldBarium-BariteArsenicMercury

⌖ Show on map USGS source ↗

Description

Price Montrose

Commodities

PrimaryGold

TertiaryBarium-Barite, Arsenic, Mercury

Commodity typeB

Deposit

Deposit typesediment-hosted Au

Model173: Sediment-hosted Au

Deposit sizeM

WorkingsSurface, Underground

Orebody formtabular to irregular

Ore controlThe Rain Fault served as a conduit for mineralizing hydrothermal fluids. The basal Webb Formation immediately above the unconformable contact with Devils Gate Limestone served as a stratigraphic control.

Materials

Ore mineralsGold, Calcite, Jarosite, Hematite, Silica, Alunite, Kaolinite, Cinnabar, Wavellite, Dussertite

GangueBarite

Geology

Host rockShale,Siltstone,Limestone,Sandstone · "Webb Formation", "Devils Gate Limestone", "Oxyoke Canyon Formation"

StructureThree major fault zones controlled gold mineralization in the Rain subdistrict. The Rain fault zone is a N60?W-trending\nstructural corridor that defines the Rain ?horst? and includes the Rain fault, the Dike fault, and the SB fault. The N30?Etrending\nNortheast fault zone truncated the Rain fault zone southeast of the Rain open pit. \nThe Rain Fault strikes N50-70W, dips 70 degrees SW, and is a reverse fault, southeast part of the Carlin Trend

AlterationSilicification, baritization, argillization, leaching, oxidation. Silicification generally is restricted to major hydrothermal conduits and to the ore zone. There is an envelope of silicification slightly smaller than the mineralized zone. Hydrothermal barite forms an envelope constrained within the silicification envelope. Alunite, jarosite, and barite veins are prominent along northeast and northwest striking fractures both within the Rain Fault and peripheral to gold mineralization. Specular hematite and manganese oxides cover fracture surfaces. In some areas, sedimentary rocks are slightly calcareous and show liesegang banding.

Economic & production

Development statusProducer

Production years1988 - 1994

First production1988

Last production1994

Discovery year1982

Identification

Deposit ID10310534

MRDS IDW700401

Alternate namesGnome orebody, B. J. Hill orebody, Snow Peak orebody, Northwest Extension orebody, Northwest Rain orebody, Saddle orebody, Tess orebody

RegionNA

Data scoreA

Coordinates40.61348, -116.0111

References

Staff, 1988, Directory of Nevada Mine Operations Active During Calendar Year 1987: Nevada Division of Mine Inspection, 84 p.Knutsen, G.C., and West, P.W., 1984, Geology of the Rain disseminated gold deposit, Elko Co., NV.Bonham, H.F., 1988, Bulk-Mineable Precious-Metal Deposits and Prospects in Nevada, NBMG Map #91.Rocky Mountain Pay Dirt, 1987, "Newmont Gold seeking land exchange for Rain gold project."Nevada Mining Association Bulletin, 1987, Newmont Gold-BLM initiate mutually useful land swap.NBMG Field Examination Report, 1982, and sample analyses.NBMG Open File Report 82-11.USGS Map I-1028.Ketner and Smith, 1982, Geology, vol. 10, p. 298-303.Thoreson, R.F., 1987, The Rain Gold Deposit, in Bulk Mineable Precious Metal Deposits of the Western U.S., Guide for Field Trips, The Geological Society of Nevada, Reno.Thoreson, R.F., 1991, Geology and gold deposits of the Rain subdistrict, Elko County, Nevada, in Raines, G.L., et al., eds., Geology and Ore Deposits of the Great Basin, The Geological Society of Nevada, Reno, p. 635-643.NBMG, 1988, The Nevada Mineral Industry 1987, NBMG Special Publication MI-1987.The Northern Miner, 1/8/90.NBMG, 1991, The Nevada Mineral Industry 1990, NBMG Special Publication MI-1990.NBMG, 1994, MI-1993Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.Longo, Anthony A., Thompson, Tommy B., and Harlan, J. Bruce, 2002, GEOLOGIC OVERVIEW OF THE RAIN SUBDISTRICT; in NBMG Bulletin 111, pp. 168-189\nhttp://www.nbmg.unr.edu/dox/b111/rain.pdfBAGBY, W. C. SEDIMENT-HOSTED DISSEMINATED GOLD DEPOSITS IN NEVADA: A REVIEW OF THEIR GEOLOGIC CHARACTERISTICS. ABSTR. NO. 33,496 IN ABSTRACTS WITH PROGRAMS, 1984. 97TH ANNU. MEETING, GEOL. SOC. AM.,BLOOMSTEIN, E. I. AMMONIA ALTERATION IS A GEOCHEMICAL LINK IN GOLD DEPOSITS OF THE CARLIN-MIDAS BELT. ABSTR. IN EXPLORATION FOR ORE DEPOSITS OF THE NORTH AMERICAN CORDILLERA. SYMP. OF ASSOC. EXPL. GEOCHEM., RENO, NV, MARCH 25-28, 1984, P. 27.JOUR. GEOCHEMICAL EXPLORATION, V. 9, NO. 2/3, 1978, PP. 186-194. 013-0063.CLISBY, H. NEVADA'A PRECIOUS METALS PICTURE LOOKING BETTER ALL THE TIME. BIG SKY PAYDIRT (BISBEE, AZ), NO. 36, SEPT. 1983, PP. 21A-25A.DOTT, R. H., JR. PENNSYLVANIAN STRATIGRAPHY OF ELKO AND NORTHERN DIAMOND RANGES, NORTHEASTERN NEVADA. AM. ASSOC. PETROLEUM GEOL. BULL. V. 39, NO. 11, 1955, P. 2211.DREWES, H. 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GEOCHEM., RENO, NV, MAR. 25-28, 1984, PP. 32.KNUTSEN, G. C., AND WEST, P. W. GEOLOGY OF THE RAIN DISSEMINATED GOLD DEPOSIT, ELKO COUNTY, NEVADA: ARIZONA GEOL. SOC. DIGEST, V. 15, 1984, P. 73-76.REGNIER, J. P. M. CENOZOIC GEOLOGY IN THE VICINITY OF CARLIN, NEVADA. GEOL. SOC. OF AMERICA BULL., V. 71, 1960, P. 1189.SMITH, J. F., JR., AND K. B. KETNER. GENERALIZED GEOLOGIC MAP OF THE CARLIN, DIXIE FLATS, PINE VALLEY, AND ROBINSON MOUNTAIN QUADRANGLES, ELKO AND EUREKA COUNTIES, NEVADA. U.S. GEOL. SURV. MISC. FIELD STUDIES MAP MF-481, 1972, SCALE 1:125,000.SMITH, J. F., JR., AND K. B. KETNER. STRATIGRAPHY OF PALEOZOIC ROCKS IN THE CARLIN-PINON RANGE AREA, NEVADA. U.S. GEOL. SURV. PROF. PAPER 867-A, 1975, PP. A1-A87.SMITH, J. F., JR., AND K. B. KETNER. GEOLOGIC MAP OF THE CARLIN-PINON RANGE AREA, ELKO AND EUREKA COUNTIES, NEVADA. U.S. GEOL. SURV. MAP I-1028, 1978, SCALE 1:62,500.SMITH, R. M. MINERAL RESOURCES OF ELKO COUNTY, NEVADA. U.S. GEOL. SURV. 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