Photomicrograph, basalt flow member, sample 9. California. n. d.
Summary
Album caption:Photomicrograph, basalt flow member, sample 9. Shows large (0.45- millimeter) pseudomorph of chlorophaeite and magnetite after olivine, with smaller pseudomorphs in lower half of view. Groundmass is composed of plagioclase microlites, granular augite, olivine, magnetite, and chlorophaeite. Plane polarized light. X 100. California. n. d. Published as figure 58 in U.S. Geological Survey. Professional paper 274-L. 1957.
Summary
Album caption:Photomicrograph, basalt flow member, sample 9. Shows large (0.45- millimeter) pseudomorph of chlorophaeite and magnetite after olivine, with smaller pseudomorphs in lower half of view. Groundmass is composed of plagioclase microlites, granular augite, olivine, magnetite, and chlorophaeite. Plane polarized light. X 100. California. n. d.
Published as figure 58 in U.S. Geological Survey. Professional paper 274-L. 1957.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Yerkes, R.F. Collection.
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