Staurolite is a common metamorphic mineral that is useful to geologist to determine the degree of metamorphism of aluminum-rich rocks and is found in schists and gneiss .
(Staurolite; is; a common metamorphic mineral that is useful to geologist to determine the degree of metamorphism of aluminum-rich rocks and is found in schists and gneiss) (a common metamorphic mineral; is; useful to geologist) (a common metamorphic mineral; is found; L:in schists and gneiss)
Staurolite a common metamorphic mineral a common metamorphic mineral
is is is found
a common metamorphic mineral that is useful to geologist to determine the degree of metamorphism of aluminum-rich rocks and is found in schists and gneiss
useful to geologist
L:in schists and gneiss