Pennsylvania Mine Project

Lincoln County, Nevada, United States

Gold Silver Copper Barium-Barite

Land & claims · BLM · live

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BLM MLRS ↗Claims at this point ↗Surface mgmt ↗

Surface manager + active mining claims at this point, live from BLM. The "open to location" notes are a general 1872-Mining-Law guide, not BLM output — decision-support only; verify with BLM MLRS and on the ground before staking or entry.

Commodities

PrimaryGold, Silver, Copper

TertiaryBarium-Barite

Commodity typeB

Deposit

Deposit typevein, fault/breccia zone; pluton-related

Model85: Polymetallic veins

Deposit sizeSmall

Orebody formtabular

Ore controlE-W shear zones associated with the Caliente caldera complex provided fluid pathways that resulted in adjacent hydrothermal gold deposits of the Pennsylvania and other mining districts.

Materials

Ore mineralsChalcopyrite, Malachite, Azurite, Brochantite, Gold, Quartz, Pyrite, Calcite

GangueClay

Geology

Host rockSedimentary Rock,Diorite,Andesite · "Prospect Mountain Quartzite", "Pioche Shale"

Associated rockDiorite,Andesite,Porphyry,Tuff

StructureThe Caliente caldera complex consists of an 80 km E-W by 35 km N-S area of nested calderas in this part of the southeastern Great Basin. It is bounded on its north and south sides by E-W shear zones that provided magmatic pathways for stratovolcanoes, volcanic domes, breccia pipes, and other volcanic vents. The E-W zones also provided fluid pathways that resulted in adjacent hydrothermal gold deposits of the Pennsylvania, and other mining districts. The E-W shear zones are interpreted as transverse zones, which are broad belts of accommodation that enabled crust north and south of them to extend at different rates, amounts, and methods., Rocks in the mine area are cut by both NE- and NW- striking faults.

AlterationArgillization and silicification are the dominant alteration types in the mine area. Host rocks in the mine area are thoroughly kaolinized and silicified. Chloritically altered intrusive outcrops nearby.

Economic & production

Development statusPast Producer

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References

Bentz, J. and Smith, P., 1983, Field examination report on Sept 13,1983.Tschanz and Pampeyan, 1970, NBMG Bull 73, p. 170-172, Pl. I., Ii.NBMG District Files, Report on Tom Johnson propertyGrapevine Spring G-E-M Resources Area Technical Report, 1983, for BLM.Snee, Lawrence W. and Rowley, Peter D. , 2000, New 40Ar/39Ar dates from the Caliente caldera complex, Nevada-Utah; at least 10 million years of Tertiary volcanism in one of the world's largest caldera complexes; Abstracts with Programs - Geological Society of America, vol.32, no.7, pp.461.NBMG MI-1996Denver Mining Record, 8/28/96.Denver Mining Record, 1/29/97.

Identification

Deposit ID10310471

MRDS IDM241647

Alternate namesTom Johnston Property (in part), Alta Claims (in part), Independence, Jumbo Claim area?, Pennsylvania Mine north, Pennsylvania Mine south, Culverwell adit

RegionNA

Data scoreB

Coordinates37.41358, -114.47555