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Gneiss

This gneiss (pronounced “nice”) from the Mt. Ararat Formation, was originally a sedimentary rock that was subjected to high pressures and temperatures. The layers defined by the presence of light and dark minerals reveal folding.

Location: Topsham, Sagadahoc County

Gift of John Wasileski and Highland Green

Specimen Sponsorship: $7,500

gneiss rock garden specimen

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