A study of plagioclase zoning
The zoning of plagioclase feldspars was studied with the four-axis universal stage. The composition, in terms of the extinction angle X’ʌ010, ⊥a, was measured for each zone in several crystals in each of nearly fifty rocks. The values of the extinction angles for each zone were plotted against the d...
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| Language: | English |
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University of British Columbia
2012
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| Online Access: | http://hdl.handle.net/2429/40357 |