Norwood and Bois Blanc cherts

Norwood chert and Bois Blanc chert are two Great Lakes cherts reported on Michigan points. No source opened for this research describes either stone, so this page has no checked facts yet. It is a placeholder: both names need an authority, such as a Michigan geological or archaeological survey, before any description of colour, geology or use is written. Library point texts that name them are the only current lead.