CALCITE. Potosí Mine (El Potosí Mine). Francisco Portillo, West Camp. anta Eulalia District, Mun. de Aquiles Serdán. Chihu...

Description

CALCITE
Potosí Mine (El Potosí Mine)
Francisco Portillo, West Camp
anta Eulalia District, Mun. de Aquiles Serdán
Chihuahua, Mexico
8.66 x 3.26 x 2.46 inches (22 x 8.3 x 6.26 cm)

The crystal form a mineral takes can often be as interesting and appealing as the color or other unique characteristics. In this case, sparkly crystals of colorless Calcite have overgrown long brown formations of stalactitic Limonite. The shimmery specimen looks something like a crystalized log and features one relatively large crystal in the middle of the face along with some smaller examples near the bottom of the piece. At virtually 9 inches (22.86 cm) long, this is a sizable example of a unique secondary growth.

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