Macroscopic: Argillite bearing spessartine garnet formed through reaction with the surrounding rock during metamorphism. Microscopic: Abundant medium-sized garnet phenocrysts within a very fine grained matrix. Thin section pictures in XPL unless…
Macroscopic: Slate (low grade shale metamorphism) samples with visible thin black beds. Samples were found interbedded with siltstones represented by sample NS-1. High angle between bedding and cleavage. Microscopic: Very fine grained quartz,…
Macroscopic: Low-grade metamorphic (zeolite facies) black siltstone with idiomorphic pyrite porphyroblasts. Microscopic: Very fine grained quartz and muscovite with large pyrite phenocrysts. Thin section picture in XPL unless noted in the picture…