| Lat / long: | 40.59938, -111.60717 |
| Primary: | Silver, Lead |
| Secondary: | Gold, Zinc, Copper, Manganese |
| Tertiary: | Molybdenum |
| Ore: | Anglesite, Argentite, Calamine, Chalcopyrite, Galena, Hemimorphite, Jamesonite, Malachite, Plumbojarosite, Smithsonite, Wulfenite |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host type: | Quartzite |
| Associated type: | Diorite |
| Structure: | Grizzly Thrust Zone And Another Higher Thrust Zone; Silver Fork Fault; Ne Dikes; Beds Dip At 10 E Above Thrust Zone And 20 - 30 E Below The Thrust Zone; City Rocks Fissure, Grizzly - Lavinia Fissure (N 40 E, Steep N) |
| Alteration processes: | Dioritic Dikes Are Metamorphosed To Diopside And Reddish Brown Garnet. Contact Alteration Has Occurred Along The Contacts Of Limestone And Intrusives. |
| MRDS | DC14136 |
| DEP | 10020856 |
| Reference | {Deposit:: CALKINS,F.C. & BUTLER,B.S., 1943, GEOLOGY AND ORE DEPOSITS OF THE COTTONWOOD-AMERICAN FORK AREA: USGS PROF. PAPER 201, P. 131-133.}{Deposit:: JAMES,L.P., 1979, GEOLOGY, ORE DEPOSITS, AND HISTORY OF THE BIG COTTONWOOD MINING DISTRICT: UTAH GEOL. & MIN. SURV., BULL. 114, P. 79-81.}{Deposit:: BUTLER,B.S. & LOUGHLIN,G.F., 1916, A RECON. OF THE COTTONWOOD-AMERICAN FORK MINING REGION: USGS BULL. 620, P. 187.}{Deposit:: HEYL,A.V., 1963, OXIDIZED ZINC DEPOSITS OF THE U.S.: USGS BULL. 1135-B, P. 47.}{Deposit:: 5) CRITTENDEN,M.D.,JR., 1951, MANGANESE DEPOSITS OF W. UTAH: USGS BULL. 979-A, P. 35.}{Deposit:: 6) HESS,F.L., 1906, RARE METALS- SOME MOLYBDENUM DEPOSITS OF MAINE, UTAH, & CALIF.: USGS BULL. 340, P. 238.}{Deposit:: 7) USGS MINERAL RESOURCE YEARBOOK 1916-23; USBM MINERAL RESOURCE YEARBOOK 1924-49} |
| Reporter | Unknown, Wong, George (Tooker, Ed) |