Re: Son Collecting
I started collecting in Indiana in the early 1950s. You don't say what part of the state you're in; it makes a difference. On our farm in northwestern IN I started my first agate collection with little Lake Superior agates collected in our drainage ditches in the Spring of the year. Gravel quarries are a possible agate source; limestone quarries are a good place to find fossils and calcite. There was a quarry close to Kokomo which had really dynamic calcites in the mid-60s. Southern Indiana, from Bloomington to the Ohio River has great fossils all over the place (broken pieces of crinoid stems are often called "Indian beads" or Indian money"), plus southern Indiana has a lot of quartz geodes.
On a guess the fossil you have is likely a colony coral like hexagonaria, or even a fossil brain coral with well developed individual cells.
Small Wonders Lapidary
Church Hill, TN
From jim small - May 26, 2010 at 18:32:32