Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
massive
datolite-polished-3
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 datolite is white but they be colored
various
shades of grayish pink by inclusions of microscopic-sized flakes of
native copper.
datolite
002
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.