| Lat / long: | 38.97963, -119.26876 |
| Primary: | Copper |
| Secondary: | Silver |
| Tertiary: | Gypsum-Anhydrite, Gold |
| Ore: | Chalcocite, Chalcopyrite, Covellite, Cuprite, Pyrite |
| Orebody form: | IRREGULAR |
| Operation type: | Unknown |
| Deposit type: | Sedimentary |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1875 |
| Host rock: | Rhyolite To Dacite Volcanics;Qtz. Monzonite Porphyry |
| Host type: | Limestone |
| Associated rock: | Andesite To Dacite Tuff Breccia;Rhyolite Tuff, Siltstone, Limestone |
| Associated type: | Monzonite,Diorite |
| Structure: | Yerington Batholith |
| Tectonic: | Complex Basin And Range Faulting |
| Alteration processes: | Albitic, Sericitic, Propylitic, Weak Potassic |
| MRDS | M035877 |
| DEP | 10037701 |
| Reference | {Deposit:: MOORE, J. G., 1969 , GEOLOGY AND MINERAL DEPOSITS OF LYON, DOUGLAS AND ORMSBY COUNTIES, NEV., NEVADA BUREAU OF MINES, BULLETIN 75 .}{Deposit:: EINAUDI, M. T., 1977 , PETROSENISIS OF THE COPPER-BEARING SKARN AT THE MASON VALLEY MINE, YERINGTON, NEV., ECON. GEOL., VOL. 72 , NO. 5 .} |
| Reporter | Fiebelkorn, J. B. (Stewart, J. H.) |