Figure F24. Reflected-light photomicrographs showing the instability of maghemite as it exsolves possibly ulvöspinel or ilmenite parallel to cleavage planes. A. Sample 197-1204B-10R-3, 25-27 cm (field of view = 0.25 mm; photomicrograph 1204B-142). B. Sample 197-1204B-10R-3, 25-27 cm (field of view = 0.625 mm; photomicrograph 1204B-144).

Figure F24. Reflected-light photomicrographs showing the instability of maghemite as it exsolves possibly ulvöspinel or ilmenite parallel to cleavage planes. A. Sample 197-1204B-10R-3, 25-27 cm (field of view = 0.25 mm; photomicrograph 1204B-142). B. Sample 197-1204B-10R-3, 25-27 cm (field of view = 0.625 mm; photomicrograph 1204B-144).