Flint, Quartz : SiO2

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Copyright © Jamison K. Brizendine
minID: QJJ-H50

Flint, Quartz : SiO2

Copyright © Jamison K. Brizendine  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 7.5 cm x 6.3 cm x 3.7 cm

This is a small cabinet specimen of flint and crystalline quartz from Flint Ridge, Hopewell, Ohio, United States. Flint is considered to be a cryptocrystalline variety of silicon dioxide, similar in composition to chert (Akhaven, 2012), but nodular in origin. Akhaven (2012) noted that small cavities are often found in flint, with quartz being the dominant mineral.

Flint from Flint Ridge is the state “gemstone” of Ohio and was used by the Hopewell Native Americans for arrowheads and tools. Flint has been found in various archeological Native American sites throughout Ohio and the Midwest (Greber, 1984).

Flint from Ohio was also used by early Europeans. Flint was used as raw material for creating grindstones to sharpen tools and was the raw material to create “buhrstones”, which were used to grind grain in water mills. Flint from Flint Ridge, Ohio was even used as enamel for glassware that was produced in Zanesville, Ohio (Getz, 2012).

Jamison K. Brizendine specimen and photo

References Cited:

Akhaven, A., 2012, Flint and chert: http://www.quartzpage.de/flint.html

Getz, G., 2012, Flint: Ohio’s official gemstone: Educational Leaflet No. 6, Ohio Department of Natural Resources Division of Geological Survey, Columbus, Ohio, 8 p.

Greber, N., 1984, Recent excavations at the Edwin Harness Mound, Liberty Works, Ross County, Ohio: Midcontinental Journal of Archeology, Kent State University, 93 p.

This photo has been shown 313 times
Photo added:26th Nov 2014
Dimensions:1265x1103px (1.40 megapixels)
Date/Time of Photo:1st Jan 2007 12:00:30
Camera:KODAK Z1275 ZOOM
Exposure time:1/100s
Focal Length:17mm
Focal Length (35mm film equivalent):80mm
ISO speed:64
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