The Non-metallic Minerals: Their Occurrence and Uses |
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Common terms and phrases
According acid alumina aluminum American Institute analyses apatite asbestos associated bauxite beds brick calcite calcium carbonate cement cent chemical chloride clay cobalt color compact composition Constituents containing corundum County crystalline crystals decomposition deposits depth diameter dolomite emery Engineering and Mining feet in thickness feldspar fibrous garnets gneiss granite graphite gray gypsum H₂O hard hübnerite hydrous impurities inches Institute of Mining iron oxides kaolin Lake lime limestone localities magnesia magnetite mainly manganese manufacture masses material mica miles mineral occurs Mining Engineers Mining Journal monazite Mountains nodules North Carolina ocher origin peridotite phosphate pisolites PLATE portion potash pounds psilomelane pure pyrite pyrolusite quantities quarry quartz region Report rock salt sand sandstone schists serpentine sesquioxide shales silica SiO2 soapstone soda soluble sometimes South specific gravity stone sulphate sulphur surface tons Trace U. S. Geological Survey U. S. National Museum variety varying veins
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