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Walter R. Kellogg

 

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Mineral Specimen #6420    Pyrite Pseudomorph after Calcite

Contessa Mine, Santa Eulalia District, Mun. de Serdan, Chihuahua, Mexico

7 x 6.1 x 4.8 cm
2.8 x 2.4 x 1.9 in

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Ex. E. Morales from Roberts Minerals, 1982, Ex. Arizona-Sonora Museum


Small Pyrite crystals have completely replaced a cluster of scalenohedral Calcite crystals. There are a few small, white colored Dolomite crystals on the side of one of the pseudomorphed crystals as well as on the bottom of the specimen. Also on the bottom of the crystal there is massive, black colored Sphalerite (see last picture).

Condition: Excellent

Flaws: There is no a appreciable damage. However, prior to altering to Pyrite, it appears a few of the very tips of a few of the Calcite crystals may have broken.

This mineral is also found in the following galleries: Minerals From Mexico | Sulfides and Sulfosalts | Pseudomorphs | Minerals Priced Between 100 and 199 Dollars