The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 2005 |
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Page 176
... Oxides XO and XO types Two nonequivalent metal sites ( X and Y ) characterize multiple oxides , which have the form XY2O4 . Unlike the minerals of the sulfide class , which exhibit ionic , covalent , and metallic bonding , oxide ...
... Oxides XO and XO types Two nonequivalent metal sites ( X and Y ) characterize multiple oxides , which have the form XY2O4 . Unlike the minerals of the sulfide class , which exhibit ionic , covalent , and metallic bonding , oxide ...
Page 184
... oxide [ CaO ] , magnesium oxide [ MgO ] , and fer- rous oxide [ FeO ] ) . Shales enriched in clay minerals con- tain a rather large amount of aluminum oxide , and during metamorphism of the shale mineral reactions and recrystallization ...
... oxide [ CaO ] , magnesium oxide [ MgO ] , and fer- rous oxide [ FeO ] ) . Shales enriched in clay minerals con- tain a rather large amount of aluminum oxide , and during metamorphism of the shale mineral reactions and recrystallization ...
Page 233
... oxide and iron oxides but are enriched in soda and potash . Both calcium oxide ( CaO ) and alumina ( Al2O1 ) are depleted in the rocks that have a silica con- tent of less than about 45 weight percent , but , above 45 percent , calcium ...
... oxide and iron oxides but are enriched in soda and potash . Both calcium oxide ( CaO ) and alumina ( Al2O1 ) are depleted in the rocks that have a silica con- tent of less than about 45 weight percent , but , above 45 percent , calcium ...
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albite amphiboles ancient aragonite areas atoms basalt bivalves body calcite calcium called carbonate central centre century cephalopods chemical clay minerals colour common composition contain crust crystals ctenidia cult cultural deities deposits developed dolomite Earth economic eggs electron evaporite example existence facies feldspar Figure garnet gastropods goddess gods grains Hittite human igneous rocks important industrial kaolinite king known layers limestone magma magnetic major mantle cavity marine material mental metamorphic rocks metaphysics Mexican Mexico City mica Michelangelo microscope millimetres Milton mimicry mind Mineralogy modern Molière Mongolia Mongols Moscow myth nature object occur ocean olivine organic originally oxide percent period philosophers physical plagioclase political population pressure produced properties pyroxene quartz reaction region religion religious reprinted result sandstones sedimentary rocks sediments shell silicate smectite snails society species structure Sumerian surface temperature temple tetrahedrons texture tion typically United urban volcanic