This exercise is designed to help students understand relationships among external morphology of crystals (their shape and faces), internal structure (unit cell shape, edge measurements, and volume), Hermann-Mauguin notation for the 32 crystal classes, and Miller Indices of forms and faces. The example and four crystal measurement problems have been drawn using the computer program SHAPE (see both Brock and Velbel, this volume). Both a single drawing and stereo pair are given for each problem. The stereo pair drawings can be used with the normal stereoscope used to read air photographs. The interfacial angles were calculated by the SHAPE program. If you have access to SHAPE you can design other crystal problems or have students generate the crystal drawing on the computer and then make the calculations ask for in this exercise.


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    Chemistry,NSDL_SetSpec_380601,Geology,Undergraduate (Upper Division),Undergraduate (Lower Division),Higher Education,oai:nsdl.org:2200/20100502195200892T,Vocational/Professional Development Education,Crystallography,Geoscience,NSDL



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