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Lanthanide vs Crichtonite - What's the difference?

lanthanide | crichtonite |

As nouns the difference between lanthanide and crichtonite

is that lanthanide is (chemistry) any of the 14 rare earth elements from cerium (or from lanthanum) to lutetium in the periodic table; because their outermost orbitals are empty, they have very similar chemistry; below them are the actinides while crichtonite is (mineral) a mixed oxide mineral containing several different lanthanides as well as titanium, iron and manganese.

lanthanide

English

Noun

(wikipedia lanthanide) (en noun)
  • (chemistry) Any of the 14 rare earth elements from cerium (or from lanthanum) to lutetium in the periodic table; because their outermost orbitals are empty, they have very similar chemistry; below them are the actinides.

    • Usage notes

    * According to IUPAC - "Although lanthanoid means 'like lanthanum' and so should not include lanthanum, lanthanum has become included by common usage. Similarly, actinoid. The ending 'ide' normally indicates a negative ion, and therefore lanthanoid and actinoid are preferred to lanthanide and actinide. However, lanthanide and actinide are still allowed owing to wide current use."

    Synonyms

    * lanthanate (obsolete) * lanthanoid (including lanthanum ) * lanthanon (proposed to avoid confusion with the usual meaning in chemistry of -ide ) * rare-earth element

    Derived terms

    * lanthanide contraction * lanthanide series

    See also

    * cerium * praseodymium * neodymium * promethium * samarium * europium * gadolinium * terbium * dysprosium * holmium * erbium * thulium * ytterbium * lutetium

    crichtonite

    English

    Noun

    (en noun)
  • (mineral) A mixed oxide mineral containing several different lanthanides as well as titanium, iron and manganese.