Geologic descriptionThe occurrence noted by Albanese (1984) included the analysis of three samples: 1) a sulfide zone containing arsenopyrite, chalcopyrite, and pyrite. A rock sample from a trench in a garnet-diopside skarn contained 518 ppm Cu, 39 ppm Pb, 436 ppm Zn, 0.1 ppm Au, 1.3 ppm Ag, 1 ppm Mo, 222 ppm Sb, 20 ppm Sn, 60 ppm W, greater than 19,800 ppm As, and 686 ppm Mn; 2) an arsenopyrite-, chalcopyrite-, and pyrite-bearing calc-silicate contained 64 ppm Cu, 4 ppm Pb, 50 ppm Zn, 0.1 ppm Au, 0.4 ppm Ag, 2 ppm Mo, 10 ppm Sb, 4 ppm Sn, 900 ppm W, 213 ppm As, and 1,360 Mn; and 3) an arsenopyrite and pyrite bearing calc-silicate contained 462 ppm Cu, 34 ppm Pb, 37 ppm Zn, 4.3 ppm Ag, 1 ppm Mo, 4 ppm Sn, 450 ppm W, 818 ppm As, and 364 ppm Mn. Weber and others (1978) describe the regional bedrock as quartzite, slate, calc-phyllite and marble. The occurrence is located near the contact of a Tertiary to Cretaceous granodiorite to quartz monzonite intrusion. |
