| Lat / long: | 37.41358, -114.47555 |
| Primary: | Gold, Silver, Copper |
| Tertiary: | Barium-Barite |
| Ore: | Chalcopyrite, Malachite, Azurite, Brochantite, Gold, Quartz, Pyrite, Calcite |
| Gangue: | Clay |
| Orebody form: | tabular |
| Operation type: | Surface |
| Deposit type: | vein, fault/breccia zone; pluton-related |
| Production size: | Small |
| Development status: | Past Producer |
| Host rock: | Prospect Mountain Quartzite, Pioche Shale |
| Host type: | Sedimentary Rock,Diorite,Andesite |
| Associated type: | Diorite,Andesite,Porphyry,Tuff |
| Structure: | The 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. |
| Alteration processes: | Argillization 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. |
| MRDS | M241647 |
| DEP | 10310471 |
| Reference | {Deposit:: Bentz, J. and Smith, P., 1983, Field examination report on Sept 13,1983.}{Deposit:: Tschanz and Pampeyan, 1970, NBMG Bull 73, p. 170-172, Pl. I., Ii.}{Deposit:: NBMG District Files, Report on Tom Johnson property}{Deposit:: Grapevine Spring G-E-M Resources Area Technical Report, 1983, for BLM.}{Deposit:: 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 worl* largest caldera complexes; Abstracts with Programs - Geological Society of America, vol.32, no.7, pp.461.}{Deposit:: NBMG MI-1996}{Deposit:: Denver Mining Record, 8/28/96.}{Deposit:: Denver Mining Record, 1/29/97.} |
| Reporter | Schruben, Paul G., LaPointe, D.D. |