Period

2 results for: niobium

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Coltan, also Columbite, Oka, Quebec Coltan is a dull black metallic ore from which are extracted
BRK25G51_303

Coltan, also Columbite, Oka, Quebec Coltan is a du...

Heinrich Rose (6 August 1795, 27 January 1864) was a German mineralogist, analytical chemist and
BRK25E56_440

Heinrich Rose (6 August 1795, 27 January 1864) was...