Creek walking today in SE Iowa.
Found this black, glassy rock. Iām told there was no volcanic activity in this area, so no obsidian.
Iāve found a lot of black, shiny rocks over the years, but none like this one.
It doesnāt resemble any of the various coal samples Iāve found either. Ideas welcomed. šš¼
Found this black, glassy rock. Iām told there was no volcanic activity in this area, so no obsidian.
Iāve found a lot of black, shiny rocks over the years, but none like this one.
It doesnāt resemble any of the various coal samples Iāve found either. Ideas welcomed. šš¼