Walden Gem Quarry (Gotta-Walden prospect), Portland, Middlesex Co., Connecticut, USA

Standard Detailed By Chemistry Mineral Photos (8)Search Google

Granite pegmatite.

Seaman, David. (1970): The Paragenesis of The Walden Pegmatite, Portland, Conn. (Rocks & Minerals 45:443-449, 523-529).

Mineral List:

25 entries listed. 16 valid minerals. 2 erroneous literature entries.

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