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Definition of staurolite
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< staunch
Stavanger >
stau·ro·lite
(stôr
-l
t
)
KEY
NOUN:
A brownish to black mineral, chiefly (FeMg)
2
Al
9
Si
4
O
23
(OH), often having crossed intergrown crystals and sometimes used as a gem.
ETYMOLOGY:
Greek
stauros
,
cross
; see
st
-
in Indo-European roots +
-lite
OTHER FORMS:
stau
ro·lit
ic
(-l
t
k)
KEY
(Adjective)
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