fossil
Trace Fossil (Lichenandites or Rhynie Chert Chert with Microfossils)
Trace fossil in microcrystalline quartz (SiO2)
Hardness: 6.5-7 (Mohs scale); Color: Dark brown to black matrix with tan/cream filigree patterns; Luster: Waxy to dull; Structure: Fine-grained cryptocrystalline quartz.
- Hardness
- 6
- Color
- Dark brown to black matrix with tan/cream filigree patterns
- Luster
- Waxy to dull
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Physical properties
Hardness: 6.5-7 (Mohs scale); Color: Dark brown to black matrix with tan/cream filigree patterns; Luster: Waxy to dull; Structure: Fine-grained cryptocrystalline quartz.
Formation & geological history
Formed through the permineralization of organic matter, likely root systems, lichen, or fungal hyphae, in a silica-rich sedimentary environment such as a hot spring or ancient lake bed. Most common in Devonian to Carboniferous strata.
Uses & applications
Scientific study of ancient ecosystems, lapidary use for unique jewelry cabs, and fossil collecting.
Geological facts
The delicate, branching patterns are often mistaken for dendritic manganese inclusions, but in this specimen, they represent actual biological trace structures preserved in stone.
Field identification & locations
Identify by looking for distinct, non-geometric branching patterns suspended inside a translucent or opaque stone matrix. Commonly found in riverbeds or areas with volcanic sedimentary history.
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