Photomicrograph of the field of figure A with crossed nicols. Clearwater County, Idaho. circa 1957.
Dates
Date Taken
1957
Summary
Album caption: Photomicrograph of the field of figure A with crossed nicols. Plagioclase (pl) occurs in lath-shaped crystals that are twinned and zoned. Quartz (Q) is intersticial. Clearwater county, Idaho. c. 1957. Published as figure 9B in U.S. Geological Survey. Professional paper 344-D. 1963.
Summary
Album caption: Photomicrograph of the field of figure A with crossed nicols. Plagioclase (pl) occurs in lath-shaped crystals that are twinned and zoned. Quartz (Q) is intersticial. Clearwater county, Idaho. c. 1957.
Published as figure 9B in U.S. Geological Survey. Professional paper 344-D. 1963.
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