The New Encyclopaedia Britannica: A - K.Encyclopaedia Britannica, 2005 |
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Page 174
... silicate minerals . The silicate group was subdivided in part on the basis of com- position but mainly according to internal structure . Based on the topology of the SiO , tetrahedrons , the subclasses in- clude framework , chain , and ...
... silicate minerals . The silicate group was subdivided in part on the basis of com- position but mainly according to internal structure . Based on the topology of the SiO , tetrahedrons , the subclasses in- clude framework , chain , and ...
Page 180
... silicate structures . The silicates can be divided into groups according to structural configuration , which arises from the sharing of one , two , three , or all oxygen ions of a tetrahedron ( see Fig- ure 28 ) . Nesosilicates have ...
... silicate structures . The silicates can be divided into groups according to structural configuration , which arises from the sharing of one , two , three , or all oxygen ions of a tetrahedron ( see Fig- ure 28 ) . Nesosilicates have ...
Page 208
... silicate layers . The unit silicate layer formed by aligning one octahedral sheet to one tetrahedral sheet is referred to as a 1 : 1 sili- cate layer , and the exposed surface of the octahedral sheet consists of hydroxyls . In another ...
... silicate layers . The unit silicate layer formed by aligning one octahedral sheet to one tetrahedral sheet is referred to as a 1 : 1 sili- cate layer , and the exposed surface of the octahedral sheet consists of hydroxyls . In another ...
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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