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Walter R. Kellogg


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Mineral Specimen #4540    Copper Crystals, Epidote, Quartz with Included Epidote

Centennial Mine, Centennial, Houghton Co., Michigan

7.5 x 4.7 x 5.7 cm
The largest crystal is 2.8 x 2.5 x 2.1 cm
6.3 x 2 x 1.2 in


A large dodecahedral Copper crystals rises from a bed of basalt. Although well formed, there are two contact areas on the crystal. Smaller crystals extend from one side near the bottom of the large crystal. Other, well formed crystals can be found in the matrix at the base of the large crystal and at the other end of the specimen. In two places, there are ridges of jumbled small Quartz crystals included with Epidote (for which this mine is noted).

Condition: Very Good

Flaws: Nothing Appreciable

This mineral is also found in the following galleries: Minerals From Michigan | Copper | Quartz | Sorosilicates | Minerals with Inclusions | Minerals Priced Between 100 and 199 Dollars