sedimentary
Brecciated Jasper
Brecciated Jasper (Microcrystalline Quartz / SiO2)
Hardness: 6.5-7 (Mohs scale), Color: Dark brown to reddish-brown with cream or gray inclusions, Luster: Dull to vitreous (polished), Crystal Structure: Trigonal/Microcrystalline, Cleavage: None
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Dark brown to reddish-brown with cream or gray inclusions, Luster: Dull to vitreous (polished), Crystal Structure: Trigonal/Microcrystalline, Cleavage: None
Formation & geological history
Formed when hematite-rich jasper is broken by tectonic shifts or seismic activity and then rebonded (brecciated) by a secondary mineral, typically translucent silica or quartz, Filling the resulting cracks.
Uses & applications
Commonly used for lapidary work, jewelry (beads, cabochons), ornaments, and as a popular 'healing crystal' in the metaphysical community.
Geological facts
The term 'brecciated' comes from the Italian word 'breccia', meaning broken gravel or stone. It is essentially a natural mosaic made by geological pressure.
Field identification & locations
Identified by its distinctive 'broken' pattern where sharp-edged jasper fragments are cemented in a finer matrix. Often found in riverbeds or near tectonic fault zones.
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