Roger Weller, geology instructor
[email protected] copyright 2010-R.Weller
staurolite-twinned crystals-1
a 60 degree twin and a 90 degree twin
of staurolite
Staurolite is HFeAl5Si2O13
staurolite
3
Photos are copyright free only for
non-commercial educational uses.
Just credit photos to R.Weller/Cochise College.