Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey

Type Location

7.1 x 6.7 x 3.4 cm

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Hardystonite: Ca₂ZnSi₂O₇ , Clinoherdite: CaZnSiO₄·H₂O

This specimen exhibits 4 different colors under SW UV. The Hardystonite is blue/violet, the Calcite is red/orange, the Clinoderdite is yellow/orange and the Willemite is bright green (the green in the pictures is over exposed because it fluoresces more vividly than the other minerals - it is also a richer green). The Hardystonite is more vivid than most specimens (the pictures are quite realistic). The Clinoherdite is an alteration of the Hardystonite.

Condition: Good

Flaws: Essentially massive material.

This mineral is also found in the following galleries: Minerals From New York, New Jersey and New England | Sorosilicates | Nesosilicates | Oxides and Hydroxides | Rare Minerals | Pseudomorphs | Fluorescents | Minerals Priced Between 50 and 99 Dollars