Metamorphic or Sedimentary
Quartzite with inclusions or a banded chert
Quartzite or Chert
Hardness: ~7 on Mohs scale; Color: Variable (this specimen shows a striking half dark, half light coloration with banding); Luster: Waxy to dull; Crystal structure: Microcrystalline or granular quartz.
- Hardness
- ~7 on Mohs scale
- Luster
- Waxy to dull
Identified More metamorphic or sedimentary →
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Physical properties
Hardness: ~7 on Mohs scale; Color: Variable (this specimen shows a striking half dark, half light coloration with banding); Luster: Waxy to dull; Crystal structure: Microcrystalline or granular quartz.
Formation & geological history
Formed from the metamorphism of sandstone (quartzite) or precipitation of silica (chert). Found in various geological settings worldwide.
Uses & applications
Used primarily as decorative stones, in landscaping, or collected by hobbyists for unique patterns.
Geological facts
This particular stone exhibits a fascinating natural split pattern, likely due to a vein or abrupt change in mineral deposition.
Field identification & locations
Can be identified by its hardness (scratches glass), lack of cleavage, and waxy luster. Common in riverbeds and glacial deposits. Look for unique patterns and banding.
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