Staurolite
Photos Roger Weller, geology instructor
wellerr@cochise.edu copyright 2010-R.Weller
staurolite-60 degree
penetration twinned crystals-1
Staurolite is HFeAl5Si2O13

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