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instrumental techniques applied to mineralogy and geochemistry

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16<br />

Elisabetta Mariani et al<br />

FIGURE 3. Three feldspar patterns, a), b) <strong>and</strong> c) from a perthite grain indexed manually using<br />

Channel 5 Flamenco. Plagioclase 1 <strong>and</strong> K-Feldspar are the same orientation, plagioclase 2<br />

exhibits an albite twin relationship with plagioclase 1 (180 around [201]). Also shown are the key<br />

differences from plagioclase 1 (on the right). B<strong>and</strong>s highlighted on plagioclase 1 are those that<br />

are not present in K-feldspar (green dashed) <strong>and</strong> plagioclase 2 (yellow dashed).

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