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Yttrocerite
Yttrocerite
is a
variety
of the
mineral
fluorite
with a
chemical formula
CaF
2
+F
3
. It is
bluish
red
with
isometric
crystals
and is named for the
yttrium
and
cerium
it
contains
. It has a
Mohs hardness
of 4-5. It has been found in
Sweden
, several
states
in the
United States
and
Norway
. It is not a
mineral species
approved
by
International Mineralogical Association
.