Known mineral deposits of the Brooks Range, Alaska

Significant metalliferous and selected non-metalliferous lode deposits and placer districts for the Russian Far East, Alaska, and the Canadian Cordillera

“…Deposit may be polymetallic vein, or remobilized stratabound deposit. Grybeck, 1977;John T. Dillon, oral commun., 1986 Q05-03 BT deposit: disseminated to massive pyrite, chalcopyrite, sphalerite, galena, and gossan in layers 5 to 12 cm thick. Sparse tennantite and possible enargite.…”

“…Few quartz-tourmaline veins. Grybeck, 1977;W.P. Brosge, oral commun., 1984;Rainer Newberry, written commun., 1985 Significant Lode Deposits of Russian Far East, Alaska, and Canadian Cordillera Grade and Tonnage Grab samples with up to 4.8% Cu, 0.6% Zn, and 0.2% Ag Veins and replacement bodies with tetrahedrite, enargite, and fluorite in a silica gangue.…”

“…Barker, 1978Barker, ,1981 (1) zones of disseminated galena, sphalerite, chalcopyrite and pyrite, locally with Au and Ag, in granite; (2) skam in marble with disseminated magnetite, pyrite, pyrrhotite, sphalerite, and galena in gangue of carbonate, clinopyroxene, epidote, amphibole, beryl, tourmaline, and fluorite; (3) disseminated galena, sphalerite, chalcopyrite, and (or) molybdenite in quartz veins along sheared contact in granite; and (4) fluorite greisen in granite. Brosge and Reiser, 1968;Grybeck, 1977;Sable, 1977;W.P. Brosge, oral commun., 1984;Newberry and others, 1986 Disseminated galena, sphalerite, malachite, and barite in quartz veinlets and replacement bodies in phyllite, siltstone, and greenstone of Neruokpuk(?)…”

Mineral resource potential of the Survey Pass quadrangle, Brooks Range, Alaska

“…There is no evidence that massivesulfide deposits of the Ambler sequence extend east of about longitude 153° 50" W. in the Survey Pass quadrangle. However, industry has explored volcanogenic massive-sulfide deposits in the schist belt just east of the Survey Pass quadrangle in the Wiseman quadrangle (Grybeck, 1977;Bliss and others, 1988).…”