sedimentary
Breccia
Sedimentary Breccia
AI-generated identification · may be incorrectHardness of 7 (due to quartz fragments), variable color including red, white, and brown, dull luster, coarse-grained clastic structure with angular fragments.
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Physical properties
Hardness of 7 (due to quartz fragments), variable color including red, white, and brown, dull luster, coarse-grained clastic structure with angular fragments.
Formation & geological history
Formed through the cementation of large, angular fragments of broken rocks in zones of tectonic faulting or explosive volcanic activity.
Uses & applications
Used as decorative architectural stone, facing material, and in gravel or landscaping.
Geological facts
Breccia often contains a jigsaw-puzzle-like appearance because the angular fragments fit closely together without significant transport wear.
Field identification & locations
Readily identified in the field by its distinct angular clasts embedded in a finer-grained matrix; found worldwide in fault zones and landslide deposits.
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