Geological Survey BulletinU.S. Government Printing Office, 1949 - 87 Seiten A list of uranium- and thorium-containing minerals, with data on composition, type of occurrence, chemical classification, and synonymy. |
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adits Alaska altered antimony area drained arsenopyrite assayed bedrock bornite brecciated calcite Cape chalcocite chalcopyrite Color consists copper copper minerals country rock Creek cubic Dana VII dikes disseminated district is given explored fault feet thick following references free gold gabbro galena Glacier gold and silver gold lodes granitic graywacke greenstone hex-R Inlet intrusive iron Island Johnson River Lake limestone locally lode deposits mafic magnetite malachite Mesozoic metamorphic rocks metasomatism miles Mineralogist Mines molybdenite moraines Mountain nickel occur opencuts orth ounce of gold ounces of silver oxidized Paleozoic Peninsula percent copper placer plutons probably production prospect pyrite pyrrhotite quartz diorite quartz veins region reportedly rodingites samples scheelite schist secondary mineral sedimentary serpentine serpentinite shaft shear zone slate small amounts sparse sphalerite stibnite stringers sulfides Survey Bull Tertiary tons trace tunnel U.S. Bureau U.S. Geol U.S. Geological Survey ultramafic Unnamed veinlets veins containing zinc