Biotite Mica, Old Stock For Sale

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Biotite Mica, Old Stock:
$129.92

90mm x 85mm x 71mm, 725 grams.
This one is a fabulous, old stock piece. It was part of a 1950s to early 1960s collection that I purchased. The provenance of the piece is unknown, although much of the collection in question originated in North Carolina.