As nouns the difference between niobium and rankamaite
is that niobium is niobium (symbol: nb) while rankamaite is (mineralogy) an orthorhombic-dipyramidal mineral containing aluminum, hydrogen, lead, lithium, niobium, oxygen, potassium, sodium, and tantalum.
niobium
English
Noun
(
-)
(
wikipedia niobium)
a metallic chemical element (symbol Nb) with an atomic number of 41.
Synonyms
* columbium
* dianium (obsolete)
Derived terms
* ferroniobium
* niobate
* niobian
* niobic
* niobite
* niobium carbide
* niobium chloride
* niobium pentachloride
* niobous
* niocalite
Related terms
*
See also
* columbite
* columbite-tantalite
* coltan
* euxenite
* pyrochlore
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rankamaite
English
Noun
(mineralogy) An orthorhombic-dipyramidal mineral containing aluminum, hydrogen, lead, lithium, niobium, oxygen, potassium, sodium, and tantalum.
References
* Rankamaite in the Mineralogy Database: [http://webmineral.com/data/Rankamaite.shtml]