NBMG Sample Locations 171 & 172

Occurrence in Elko county in Nevada, United States with commodities Copper, Lead, Zinc, Tungsten

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Public Land Survey System information
Commodities
Alteration
Host and associated rocks
Nearby scientific data
Geologic structures
Controls for ore emplacement
Economic information about the deposit and operations
Mining district
Workings at the site
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10047590
MRDS ID	M242974
Record type	Site
Current site name	NBMG Sample Locations 171 & 172

Geographic coordinates

Geographic coordinates:	-116.01924, 40.50213 (WGS84)
Elevation	2438
Relative position	0.5 KM WEST OF RAVENS NEST (PEAK). 0.4 KM SE OF GREY EAGLE MINE.

Site location context

Political divisions (FIPS codes)

Elko(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ravens Nest(quadrangle 1:24,000 scale)

Battle Mountain(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Pine(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country	State	County
United States	Nevada	Elko

Public Land Survey System information

Meridian	Township	Range	Section	Fraction	State
Mount Diablo	30N	53E	9	NW4	Nevada

Comments on the location information

4 PROSPECTS ON NORTH AND SOUTH SIDE OF W-TRNEDING RIDGE.

Commodities

Commodity	Importance
Copper	Primary
Lead	Primary
Zinc Critical	Secondary
Tungsten Critical	Secondary

Alteration

(Local) Silicification, Replacement, Fe And Cu Oxidation.

Analytical data

Result	SAMPLE 171: FE 7%, MG .07%, CA 2%, TI .01%, MN 3000PPM, AG 10PPM, AS 3000PPM, AU N, B N, BA 1000PPM, BE 1PPM, BI 10PPM, CD G500PPM, CO L, CR L, CU G20000PPM, LA L, MO 20PPM, NB N. NI L, PB 5000PPM, SB L, SC 5PPM, SN 30PPM, SR N, V 15PPM, W N, Y N, ZN G10000PPM, ZR N, TH N. SAMPLE 172: FE 3%, MG .02%, CA .7%, TI L, MN 500PPM, AG 300PPM, AS G10000PPM, AU N, B L, BA 300PPM, BE L, BI 500PPM, DC L, CO N, CR 10PPM, CU 3000PPM, LA N, MO 150PPM, NB N, NI 5PPM, PB G20000PPM, SB 300PPM, SC 5PPM, SN 1000PPM, SR N, V 30PPM, W N, Y N, ZN 2000PPM, ZR N, TH N.

Result

SAMPLE 171: FE 7%, MG .07%, CA 2%, TI .01%, MN 3000PPM, AG 10PPM, AS 3000PPM, AU N, B N, BA 1000PPM, BE 1PPM, BI 10PPM, CD G500PPM, CO L, CR L, CU G20000PPM, LA L, MO 20PPM, NB N. NI L, PB 5000PPM, SB L, SC 5PPM, SN 30PPM, SR N, V 15PPM, W N, Y N, ZN G10000PPM, ZR N, TH N. SAMPLE 172: FE 3%, MG .02%, CA .7%, TI L, MN 500PPM, AG 300PPM, AS G10000PPM, AU N, B L, BA 300PPM, BE L, BI 500PPM, DC L, CO N, CR 10PPM, CU 3000PPM, LA N, MO 150PPM, NB N, NI 5PPM, PB G20000PPM, SB 300PPM, SC 5PPM, SN 1000PPM, SR N, V 30PPM, W N, Y N, ZN 2000PPM, ZR N, TH N.

Host and associated rocks

Host or associated Associated

Rock type Plutonic Rock

Stratigraphic age (youngest) Late Devonian

Host or associated	Host
Rock type	Sedimentary Rock > Carbonate > Dolomite
Rock unit name	Nevada Formation;Devils Gate
Rock description	Nevada Formation;Devils Gate

Nearby scientific data

(1)	Carbonate Shelf Sequence - Limestone and minor dolomite	ListMap

Economic information

Geologic structures

Type of structure	Regional
Structure description	Roverts Mountain Thrust

Controls for ore emplacement

Fault Or Vein Replacement Zones

Comments on the geologic information

TRAVERSED ACROSS MASSIVE LIMESTONES OF DEVILS GATE FM. AND REACHED 4 PROSPECTS ON NORTH AND SOUTH SIDE OF W-TRENDING RIDGE. PROSPECTS DEVELOPED IN MORE LEDGY DOLOMITES OF THE NEVADA FM. THE FIRST PROSPECT (NOT SAMPLED) SMALL AMOUNT OF SILICIFIED LIMESTONE BRECCIA AND TOOTHSPAR WAS FOUND IN THE CUT. THE SECOND PROSPECT IS A N30E TRENDING ADIT WHICH SEEMS TO FOLLOW A NARROW FAULT OR REPLACEMENT ZONE DEVELOPED IN 2-3' WIDE BEDS OF GREY DOLOMITE. THE NARROW REPLACEMENT ZONE PARALLELS THE NE STRIKE OF THE BEDDED CARBONATES. THE ZONE IS MARKED BY PUNKY HEMATITIC AND LIMONITIC GOSSAN AND GOSSAN CEMENTED BRECCIA. AT THE PORTAL THE ZONE DIPS STEEPLY TO THE EAST BUT ROLLS TO A VERTICAL POSITION INSIDE THE ADIT. SAMPLE 171 WAS COLLECTED AT THIS LOCATION. IN OUTCROP, CALCITE VEINS WERE DEVELOPED ALONG THE BEDDING PLANES. THE THIRD PROSPECT IS AN ADIT DEVELOPED ALONG A NARROW SW-DIPPING (30 DEGREE) SKARN (FAULT) ZONE IN LIMESTONE, THERE WAS NO OBVIOUS MINERALIZATION. THE FORUTH PROSPECT IS LOCATED
ON THE RIDGECREST. IT CONSISTS OF SHALLOW PROSPECTS AND TRENCHES DEVELOPED ALONG A GOSSANY FAULT ZONE/VEIN CUTTING SILICIFIED CARBONATED. THE BEDDING OF THE CARBONATES IS PLATY AND ALSO DIPS TO THE SOUTH-WEST. THE CARBONATES ARE CUT BY GOSSANY, LIMONITIC, VUGGY QUARTZ VEINS WITH PODS OF CUOXS PYRITE, CHALCOPYRITE, GALENA ND POSSIBLY SPHALERITE AND ARSENOPYRITE. (SAMPLE 172). A SMALL, INTRUSIVE DIKE OUTCROPS WEST OF PROSPECT.

Economic information about the deposit and operations

Development status	Occurrence
Commodity type	Metallic
Significant	No

Mining district

District name	Railroad District

Workings at the site

Type of workings Surface/Underground

Overall depth 30M

Type of workings	Surface/Underground
Overall depth	30M

Comments on the workings information

4 PROSPECTS: (1) SMALL 6' LONG, N-S CUT IN CARBONATE OUTCROP; (2) N30E TRENDING ADIT FOLLOWS FAULT/REPLACEMENT ZONE WHICH PARALLELS NE-STRIKING CARBONATE BEDS; (3) 30'DEEP, NE-TRENDING ADIT DEVELOPED ALONG NARROW SW-DIPPING (30 DEGREES) SKARN (FAULT) ZONE IN CARBONATES; (4) SHALLOW PROSPECTS DEVELOPED ALONG N20W, 45 SW GOSSANY FAULT ZONE/VEIN CUTTING SW-DIPPING SILICIFIED CARBONATES.

Comments on development

CLAIMS ARE PROBABLY PATENTED

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	M242974

Bibliographic references

Deposit

OBSERVATION

General comments

Subject category	Comment text
Deposit	SAMPLE #171 CONSITS OF: SILICEOUS LIMONITIC GOSSAN AND ALTERED LS CONTAINING MALACHITE, HEMIMORPHITE, (MINOR) GALENA AND CERRUSSITE IN IRREGULAR LENSES AND PODS. ALSO SOME CALCITE VEIN MATERIAL. SAMPLE #172 CONSISTS OF: VITREOUS CLEAR TO GREY, CRYSTALLINE QUARTZ VEIN WITH SCATTERED VUGS AND GOSSANY PORTIONS. QUARTZ VEIN CONTAINS PODS OF FINELY CRYSTALLINE PYRITE, CHALCOPYRITE GALEN, CUOXS, AND POSSIBLY SPHALERITE AND ARSENOPYRITE. UNIDENTIFIED MUSTARD YELLOW OXIDE ASSOCIATED WITH GOSSAN. (POSSIBLY SB?) VEIN HAS SHEARED APPEARANCE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Subject category

Comment text

Deposit

SAMPLE #171 CONSITS OF: SILICEOUS LIMONITIC GOSSAN AND ALTERED LS CONTAINING MALACHITE, HEMIMORPHITE, (MINOR) GALENA AND CERRUSSITE IN IRREGULAR LENSES AND PODS. ALSO SOME CALCITE VEIN MATERIAL. SAMPLE #172 CONSISTS OF: VITREOUS CLEAR TO GREY, CRYSTALLINE QUARTZ VEIN WITH SCATTERED VUGS AND GOSSANY PORTIONS. QUARTZ VEIN CONTAINS PODS OF FINELY CRYSTALLINE PYRITE, CHALCOPYRITE GALEN, CUOXS, AND POSSIBLY SPHALERITE AND ARSENOPYRITE. UNIDENTIFIED MUSTARD YELLOW OXIDE ASSOCIATED WITH GOSSAN. (POSSIBLY SB?) VEIN HAS SHEARED APPEARANCE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-MAR-89	Bentz, J.L.	Nevada Bureau of Mines and Geology
Updater	01-OCT-89	Taylor, J.	U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Nevada resources

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