sedimentary
Jasper
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 6.5-7 on Mohs scale. Color: Red, brown, yellow, orange. Luster: Vitreous to greasy. Crystal structure: Microcrystalline quartz. Cleavage: None. Specific gravity: 2.5-2.9.
- Hardness
- 6
- Color
- Red, brown, yellow, orange
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 6.5-7 on Mohs scale. Color: Red, brown, yellow, orange. Luster: Vitreous to greasy. Crystal structure: Microcrystalline quartz. Cleavage: None. Specific gravity: 2.5-2.9.
Formation & geological history
Forms in sedimentary environments, often associated with iron-rich deposits.
Uses & applications
Used in jewelry, carvings, and as a decorative stone.
Geological facts
Jasper is an opaque variety of chalcedony.
Field identification & locations
Found worldwide, identifiable by its opaque nature and varied colors.
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
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Sandstone or Siltstone
Arenite (if sandstone)
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Shale (clastic sedimentary rock)
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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