| Lat / long: | 40.20375, -123.20531 |
| Tertiary: | Iron, Manganese, Silica |
| Other material: | Chert, Goethite, Limonite, Psilomelane, Pyrolusite |
| Discovery year: | 1941 |
| Operation type: | Surface |
| Development status: | Past Producer |
| First production started: | 1944 |
| MAS | 61050019 |
| DEP | 10262870 |
| Reference | {Deposit:: TRENGOVE-RECON OF CALIF MN DEPS-USBM.RPT. OF INVEST.5579-196}{Deposit:: *RIEN-MINES AND MIN RES TRINITYCO-CAL DIV.MINES,GEO.CO.RPT}{Deposit:: TRASK-GEO DESCRIPT MN DEPS OF CAL-CAL.DIV.MINES BUL.152-APRI} |
| Reporter | Niemi |