Roger Weller, geology instructor
[email protected]
copyright
2010-R.Weller
thomsonite, polished-2
Thomsonite nodules that weather out of
basalt wash up on the beaches of Lake
Superior and can be cut and polished.
thomsonite
2452a
Photo is copyright free only for
non-commercial educational uses.
Credit photo to R.Weller/Cochise College and
Exhibit Museum.
Specimens are on display at Exhibit
Museum, University of Michigan
Ann Arbor, Michigan