Staurolite
Photos Roger Weller, geology instructor
wellerr@cochise.edu copyright 2008-R.Weller
staurolite-twinned crystals-1
a 60 degree twin and a 90 degree twin
of staurolite
Staurolite is HFeAl5Si2O13

staurolite
Photos are copyright free for
non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.