New England mica deposits
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Geology topics
J.B. Headley
Publications and source records attributed to J.B. Headley.
Fletcher mica mine, Groton, New Hampshire
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Open-File Report↗
Hoyt Hill mica deposits, Orange, New Hampshire
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Open-File Report↗
Valencia and Hackett mica mines, Groton, New Hampshire
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Map of the Sargeant mica mine, Claremont, New Hampshire
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