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Mineral Specimen #4382    Aragonite on Sphalerite with Minor Fluorite

Hardin Co., Illinois

Ex. A. Neely, 1960s

White, crudely formed, aggregates of Aragonite crystals have grown on the terminations of Sphalerite crystals which are a dark brown almost black color with reddish highlights. There is a very unusual, oval shaped cast in the Sphalerite on the back side of the specimen. The Aragonite has no luster but the Sphalerite has a nice glossy almost greasy looking luster. The oval cast has a very high luster. Aragonite specimens from Hardin County are not common and are seldom available.

Condition: Good

Flaws: The Sphalerite is cleaved below the Argonite on the side with the unusual cast.

4 x 4.1 x 3.1 cm

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This mineral is also found in the following galleries: Minerals From the United States | Carbonates | Sulfides and Sulfosalts | Fluorite | Minerals Priced Between 25 and 49 Dollars
This mineral is also found in the following galleries: Minerals From the United States | Carbonates | Sulfides and Sulfosalts | Fluorite | Minerals Priced Between 25 and 49 Dollars