Light which has traversed a crystal of parisite exhibits a characteristic absorption spectrum.
2.
"' Parisite "'is a rare mineral consisting of cerium, lanthanum and calcium F 2.
3.
Parisite is mostly parisite-( Ce ), but when neodymium is present in the structure the mineral becomes parisite-( Nd ).
4.
Parisite is mostly parisite-( Ce ), but when neodymium is present in the structure the mineral becomes parisite-( Nd ).
5.
Parisite is mostly parisite-( Ce ), but when neodymium is present in the structure the mineral becomes parisite-( Nd ).
6.
Closely allied to parisite, and indeed first described as such, is a mineral from the nepheline-syenite district of Julianehaab in south Greenland.
7.
Well-known minerals containing cerium and the light lanthanides include bastn�site, monazite, allanite, loparite, ancylite, parisite, lanthanite, chevkinite, cerite, stillwellite, britholite, fluocerite, and cerianite.
8.
At the same locality there is also found a barium-parisite, which differs from the Colombian parisite in containing barium in place of calcium, the formula being ( CeF ) 2 Ba ( CO 3 ) 3 : this is named cordylite on account of the club-shaped form of its hexagonal crystals.
9.
At the same locality there is also found a barium-parisite, which differs from the Colombian parisite in containing barium in place of calcium, the formula being ( CeF ) 2 Ba ( CO 3 ) 3 : this is named cordylite on account of the club-shaped form of its hexagonal crystals.
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