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Map showing anomalous copper distribution in stream sediment concentrates, Hillsboro and San Lorenzo quadrangles, exclusive of the Black Primitive Area, Sierra and Grant Counties, New Mexico
H. V. Alminas, K. C. Watts, D. F. Siems, V. E. Kraxberger
1978, Miscellaneous Field Studies Map 900-D
This map shows the distribution of anomalous copper in the two sample fractions, magnetic (M-1) and nonmagnetic (NM-1), plotted on a base which includes sample localities, topography, and generalized geology from Hedlund (1975a, b). It is part of a series of maps for several metals that accompany this folio. Distributions...
Maps showing mineralogical data for nonmagnetic heavy-mineral concentrates in the Talkeetna Quadrangle, Alaska
R. B. Tripp, R. C. Karlson, G.C. Curtin
1978, Miscellaneous Field Studies Map 870-I
Reconnaissance geochemical and mineralogical sampling was done in the Talkeetna Quadrangle during 1975 and 1976 as part of the Alaska Mineral Resource Assessment Program (AMRAP). These maps show the distribution of gold, scheelite, chalcopyrite, arsenopyrite, galena, fluorite, cinnabar, and malachite in the nonmagnetic fraction of heavy-mineral concentrates. Heavy-mineral concentrate samples...