Host rockLimestone · Horquilla Limestone Limestone And Shale.;Bolsa Quartzite Quartzite
Associated rockDiorite · 68 My/Copper Creek Granodiorite
StructureBlock Faulting Trending Nnw. ; Reg.Trends: Minor Pre-Cretaceous E And Ne Trending Folds And Major Post-Cretaceous Nnw Trending Faults., Fault.