Datolite Photos   
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu    copyright 2010-R.Weller 

massive datolite-polished-2
Keweenaw Peninsula, Michigan
Datolite is a hydrous calcium boron silicate often associated with zeolites in basalt. 
The datolite from northern Michigan occurs as cryptocrystalline fillings within gas
bubble holes in basalt (amygdules).  The most common color of the Michigan
datolites is white but they be colored various shades of grayish pink by inclusions
of microscopic-sized flakes of

native copper.

datolite                                                                                                                                               001
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.

Specimen is on display at Cranbrook Institute of Science, Bloomfield Hills, Michigan.