This map of zinc mines Sussex County was part of an 1867 geological survey of New Jersey under the direction of Gerge H. Cook, State Geologist and John C. Smock, Assistant Geologist. Topographical heights are also noted. Map is color coded into red for gneiss, yellow for white limestone and blue for blue limestone.JPEGhttps://doi.org/doi:10.7282/T3J67HV6PublicSussex County zinc mines map 1867MapsNew Jersey--Sussex CountyNew JerseyRutgers University-New Brunswick