Found these all along the beach along the WI side of the lake.
Agate/geode
Some kind of white carbonate(reacts to hcl) rock with a green/aqua colored mineral mix of some kind
either a greenish tarrnished pyrite or as suggested elsewhere marcasite with quartz and possibly sphalerite that fluoresces under LW
streak is black.
thx.
Agate/geode
Some kind of white carbonate(reacts to hcl) rock with a green/aqua colored mineral mix of some kind
either a greenish tarrnished pyrite or as suggested elsewhere marcasite with quartz and possibly sphalerite that fluoresces under LW
streak is black.
thx.