rare
puddingstone
jasper pebbles in white quartzite · ontario
The tell
White quartzite studded with bright RED jasper pebbles and black chert. Unmistakable once seen. Nothing else on the beach looks like it.
It is the Lorrain Formation out of Ontario, an old riverbed turned to rock. Drummond Island is the Michigan place to look. The ice carried it down, so it turns up as float well south of there too.
What it gets mistaken for
- gowganda tillite
- quartzite
- red jasper
- conglomerate
The facts
- also calledan old riverbed · the ice brought it from ontario
- age~2.3 billion yrs
- where it turns upDrummond Island best · east UP & north
- the field markwhite quartzite studded with round red jasper
10% of every order goes to northern Michigan animal shelters.