Jasper

color photo of jasper sample

Hardness: 7

Jasper is a variety of quartz, which is the mineral silicon dioxide (SiO2). Jasper is a granular cryptocrystalline quartz that is usually colored red from inclusions of the mineral hematite.

small drawing of Kansas map with Phillips County highlighted in red

The sample pictured above is from Phillips County, Kansas

Sources

Klein, Cornelis, 1993, Manual of Mineralogy (after James D. Dana), 21st Edition: New York, Wiley, 681 p.

Unless noted otherwise, illustrations by Jennifer Sims, Kansas Geological Survey; photographs by John Charlton, Kansas Geological Survey; text by Liz Brosius, Kansas Geological Survey.

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