Keystone Trap Rock Quarry, Cornog, Wallace Township, Chester Co., Pennsylvania

6.3 x 3.2 x 2.9 cm

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Running through the middle of one surface of this is specimen is matted, gray/green colored, fibrous Byssolite crystals. The matrix is composed of white Albite and black Hornblende.

Condition: Good

Flaws: There is one broken area near the edge of the specimen; but, this is not near the Byssolite, but rather in the whitish area.

From the Robert Gannon collection

This mineral is also found in the following galleries: Minerals From the United States | Inosilicates | Tectosilicates | Minerals Priced Between 25 and 49 Dollars This mineral is also found in the following galleries: Minerals From the United States | Inosilicates | Tectosilicates | Minerals Priced Between 25 and 49 Dollars