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Mineral Specimen #5330    Limonite Pseudomorph after Marcasite and Spahlerite with Dolomite and Calcite

Fairdale Quarry (I-39 Quarry), Rochelle, Ogle Co., Illinois

An interesting specimen of Marcasite and Sphalerite crystals which have altered to limonite. The location is quite obscure and unusual, being a small gravel pit outside the town of Rochelle which I have driven by quite a few times when visiting a friend who lives just to the north (from whom the specimen was obtained).

Condition: Good

Flaws: Some of the Calcite crystals are cleaved.

5.1 x 5.2 x 4.9 cm
Largest crystal measures 1.2 cm across.

$45      Click here to order this mineral.                                                                                                                                                              

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