Fluorite

specimen number:
2013481

location:
Auglaize Quarry, Junction, Ohio, USA

description:

Classic Ohio fluorite specimen with two generations of cubic lustrous fluorite crystals across most of the front of this limestone matrix. The first generation shows beautiful iridescent crystals, the second-generation are gemmy smaller purple crystals of fluorite. This is in great condition and very pretty.

The Auglaize Quarry near Junction in Paulding County, Ohio, is a limestone quarry that has been worked for aggregate and construction stone. The quarry exposes Silurian age carbonate rocks that contain cavities and fractures where minerals have formed. Over time it has become a well known collecting site, producing specimens such as fluorite and calcite. The locality is especially noted for iridescent fluorite, where thin surface films create bright rainbow colors through light interference. Collectors value the quarry for this distinctive material as well as for the occurrence of well formed crystals in the limestone host rock.

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