| Lat / long: | 38.93741, -119.2307 |
| Primary: | Copper |
| Secondary: | Silver, Gold |
| Ore: | Chalcopyrite, Chrysocolla, Pyrite |
| Gangue: | Calcite, Epidote |
| Orebody form: | IRREGULAR SHOOTS AND PODS |
| Operation type: | Unknown |
| Deposit type: | Replacement |
| Production size: | Small |
| Development status: | Past Producer |
| Host rock: | Rhyolite To Darite Volcanics;Qtz. Monzonite Porphyry |
| Host type: | Limestone |
| Associated rock: | Andesite To Dacite Tuff Breccia;Rhyolite Tuff, Siltstone, Lmst |
| Associated type: | Monzonite,Diorite |
| Structure: | Yerington Batholith |
| Tectonic: | Complex Basin And Range Faulting |
| Alteration processes: | Shallow Oxidation, Albitic, Sericitic, Propylitic |
| MRDS | M035870 |
| DEP | 10098378 |
| Reference | {Deposit:: KNOPF, A., 1918 , GEOLOGY AND ORE DEPOSITS OF THE YERINGTON DISTRICT, NEV., USGS PROF. PAPER 117 .}{Deposit:: EINAUDI, M. T., 1977 , PETROSENISIS OF THE COPPER BEARING SKARN OF THE MASON VALLEY MINE, YERINGTON, NEV., ECON. GEOL. VOL. 72 NO. 5 .} |
| Reporter | Fiebelkorn, J. B. (Stewart, J. H.) |