Nature Photos
Historic and Physical Geology

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Sedimentary rock, granular cryptocrystalline silica (crystaline structure too fine to see
with an ordinary microscope)
It is similar to Flint but uaually light in color. Occures as a compact massive rock,
or as nodules.
(Reference - Physical Geology - Leet and Judson/ third edition)

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Chert Nodules in Limestone
Shark Mountain Parking Lot
Kananaskis Country, AB
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