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Figure F3. Oxide-quartz diorite (Thin Section 88; Sample 345-U1415K-2G-5, 13–15 cm [Piece 2]). A. Interstices are filled with quartz and a granophyric intergrowth of quartz and sodic plagioclase (Pl). B. Zircon (Zir) crystallized at the rim of brownish amphibole (Amp), interpreted as primary magmatic. C, D. Dendritic apatite (Apa) in granophyric intergrowth. A and C are under crossed polars; B and D are in plane-polarized light.

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