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| Click on image to enlarge Photo © Daniel R. Snyder |
In rocks of the greenschist facies, such as common greenstones, epidote is typically associated with chlorite, actinolite, albite, and quartz. This roughly diamond-shaped epidote grain is cut by several fractures that are filled with chlorite, which is also the dominant mineral in the mesostasis. Greenstone pebble found in glacial gravel in southeastern Michigan. Provenance likely northwestern Ontario. PPL on left, XPL on right. Imaged area 0.8 mm in height.
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