Untitled Page 14

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smsherman at Jan 24, 2021 01:19 AM

Untitled Page 14


(C) Hall Cases Number Mineral etc Composition - Notes etc crystal Old number etc
C88 labradorite (gray) {in Anorthosite rock Labra. = Ab30An70 Triclinic, pinacoidal SpG. = 2.7. gray-greenish, Archean none
C90 89. Albite twinning striations plagio. felds. on basal 001 face 2 planes, perfect - basal (001) + brachypinacoidal (101)? - [L?] = 86°3"

Untitled Page 14


(C) Hall Cases Number Mineral etc Composition - Notes etc crystal Old number etc
C88 labradorite (gray) {in Anorthosite rock Labra. = Ab30An70 Triclinic, pinacoidal SpG. = 2.7. gray-greenish, Archean none
C90 89. Albite twinning striations plagio. felds. on basal 001 face 2 planes, perfect - basal (001) + brachypinacoidal (101)? - [L?] = 86 °