sedimentary
Coral Fossil (Favosites)
Favosites (Extinct genus of tabulate corals)
Hardness: 3-4 (if calcified) or 7 (if silicified); Color: Off-white, tan, gray; Luster: Dull to earthy; Structure: Honeycomb-like polygonal cells (corallites) with internal horizontal plates (tabulae).
- Hardness
- 3-4 (if calcified) or 7 (if silicified)
- Color
- Off-white, tan, gray
- Luster
- Dull to earthy
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Physical properties
Hardness: 3-4 (if calcified) or 7 (if silicified); Color: Off-white, tan, gray; Luster: Dull to earthy; Structure: Honeycomb-like polygonal cells (corallites) with internal horizontal plates (tabulae).
Formation & geological history
Formed in warm, shallow marine environments. This specimen dates back to the Silurian or Devonian periods (approx. 360-430 million years ago) through the process of permineralization.
Uses & applications
Commonly used in paleontological study, as decorative garden stones, and as educational specimens for fossil collecting.
Geological facts
Commonly known as 'Honeycomb Coral' due to its appearance; these were colonial organisms that played a major role in reef building long before modern stony corals evolved.
Field identification & locations
Identifiable by the distinct grid-like or honeycomb pattern visible on weathered surfaces. Frequently found in the Great Lakes region (USA/Canada) and limestone quarries globally.
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