sedimentary
Chert
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, varies in color from white to gray and brown, exhibits a waxy luster and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, varies in color from white to gray and brown, exhibits a waxy luster and conchoidal fracture.
Formation & geological history
Formed through the accumulation of siliceous skeletal remains or chemical precipitation in marine environments over millions of years.
Uses & applications
Historically used for stone tools and weaponry; currently utilized in abrasives and road construction.
Geological facts
Chert fractures with extremely sharp edges, making it ideal for prehistoric arrowheads and cutting tools.
Field identification & locations
Identify by its hardness, conchoidal fracture, and waxy appearance; commonly found within limestone and chalk formations.
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