Here are two Late Archaic points that are very similar in size, material and style. They were found years apart both in Indiana. They are made of different types of quartzite and one is more translucent.
This is a group of triangles of very different styles. All were recovered in Indiana and the counties will be supplied. They range in size from 2-1/2″ to 1-1/8″ These could be much older than I am giving credit.