Mineral Specimen #3731 Graphite Crystals, Diopside, Phlogopite
Newcomb Township, Essex Co., New York
The old tape label on the bottom of the specimen is only partially correct. The location is correct and there are nicely formed, small, sparkly Hematite crystals. The other two minerals present are best seen under UV where the Diopside fluoreseces blue and the Phlogopite fluoresces yellow. Also, I believe the matrix is likely marble rahter than Calcite. The specimen was part of a fluorescent exhibit Don Langham would display at shows around southern Michigan in the 1960s and early 1970s.
The specimen is composed of massive material.