GRD00GBS0
I-672
Rhyolite
Precambrian › Proterozoic › Neoproterozoic › Ediacaran
542.0
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630.0
1
Camp Elliott
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Very altered rhyolite from 595 Ma Lynn-Mattapan volcanic complex. Thin section in Wards Micro Slides box in Ritter 154.
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Massachusetts
Mattapan, Suffolk County
Latitude: 42.28°
Longitude: -71.09°
N/A
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scan
crossed
GRD00GBT0: Faint flow banding. Occasional feldspar crystals (C. Eichler)
N/A
N/A