Wright, J. B. <br/><br/>
Silicates (motion picture) / 
Open University ; speakers, J. B. Wright, J. Mason 
 - Milton Keynes :  The Open University Press,  1973 
 - 1 film reel (22 min.) :  sd., b&w. ;  16 mm. + script 
<br/><br/> Contents: 1. The silicate tetrahedron - 2. Formation of silicate polytetrahedron by oxygen sharing - 3. The olivine structure - 4. The amphibole structure - 5. Sheet silicates - the talc & mica structures, the Al-Si substitution of silicate structures within the earth  Backup in U-matic 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Silicates