| Lat / long: | 38.83517, -120.96825 |
| Primary: | Copper |
| Secondary: | Gold, Silver |
| Tertiary: | Iron, Tungsten |
| Ore: | Chalcopyrite, Idocrase, Pyrite |
| Gangue: | Epidote, Garnet, Magnetite, Quartz |
| Orebody form: | PODS |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Producer |
| Production years: | 1944 - 1946 |
| Host type: | Hornfels |
| Associated type: | Diorite |
| Structure: | Faults, Joints: Lilyama Area, Member Faults Trend Approximately East And Dip 42 - 65 South, With Apparent Displacements Of Less Than 5 Ft. |
| MRDS | M007430 |
| DEP | 10029708 |
| Reference | {Deposit:: CLARK, W. B. AND CARLSON, D. W., 1956 : MINES AND MINERAL RESOURCES, EL DORADO COUNTY, CA.: CALIF. JOUR. MINES AND GEOLOGY, VOL. 52 , NO. 4 : DIV. OF MINES, P. 397 - 398 , 482 .}{Deposit:: COX, M. W., ETAL, 1948 : GEOLOGY OF THE LILYAMA AND PIONEER MINES, EL DORADO COUNTY, CA.: COPPER IN CALIFORNIA BULL. 144 : DIV. OF MINES, P. 43 - 47 .}{Deposit:: IN 1957, PRODUCED ALL OF THE COUNT* RECOVERABLE COPPER AND APPRECIABLE AMOUNTS OF GOLD AND SILVER -- U.S. BUREAU OF MINES MIN. YEARBOOK 1957, V. 3, P. 216}{Production:: COX, M. W., ETAL, 1948 , P. 44} |
| Reporter | Gere, W., Fraticelli, L. A. (Albers, J.) |