Browse Items (1651 total)

contains specularite and fine quartz

Sample comes from flow rocks that are associated with lithic fragment tuffs, pyroxene and chlorite are present as an interstitial material

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Kingdom: Animalia Phylum: Cnidaria Class: Anthozoa Order: Auloporida Family: Auloporidae Genus: Species:

Contains augite, amphibole, plagioclase, ziron, opaques, and a fine-grained alteration product (unknown)

Kingdom: Plantae

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Kingdom: Animalia Phylum: Arthropoda Class: Order: Family: Genus: Species:

Coarse sand grains made of quartz, surrounded by smaller feldspar grains. Greenish blue surface color, minimal surface weathering.

(Thin section FOV: 1.28)

Grain size is fine sand to silty sand, mostly angular with some rounded crystals. Various shades of surficial weathering with distinct pockets of orange-brown oxydation. Fresh surfaces brown-green in color. Collected from same quarry as sample FR-1.…

Grain sizes sand to silty sand, rounded and angular with very minor examples of weathering and thin quartz vein present. Collected from the same quarry as FR-2. (FOV: 1.28mm)

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…

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