X-Nico

unusual facts about columbite


Columbite

The occurrence of columbite in the United States was made known from a specimen sent by Governor John Winthrop of Connecticut to Hans Sloane, President of the Royal Society of Great Britain.


Similar

columbite |

Beryllonite

It was first described from complex crystals and as broken fragments in the disintegrated material of a granitic vein at Stoneham, Oxford County, Maine where it is associated with feldspar, smoky quartz, beryl and columbite.


see also