Favosites
Fossil
Also called Honeycomb coral and Charlevoix stone
About it
Colonial coral of close-packed, many-sided tubes like a honeycomb, each crossed by flat floors. Common in Silurian and Devonian rocks around the Great Lakes; polished Michigan pebbles of it are sold as Charlevoix stones.
- Type
- Fossil (coral)
- Group
- Tabulate coral (coral)
- Colours
- grey, tan, brown, cream
- Transparency
- opaque
- Periods
- Silurian, Devonian
Typical values: real specimens vary. For more, see mindat.org.