mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Mineralpedia Details for Columbite-(Fe)

Reset

Columbite-(Fe)

Columbite-(Fe)

Formerly called ferrocolumbite, Columbite-Fe is named for the iron (Fe) content and for the niobium content which was formerly called columbium, named in reference to the poetical name for the United States, Columbia, as the element was first discovered in the United States. Localities for Columbite-Fe include in the United States including here in the Black Hills of South Dakota at the Beecher lode and in the Bob Ingersoll, Etta, and White Cap mines, Norway, Russia, Italy, Madagascar, Australia, and Japan among a few others. Columbite-Fe is an uncommon mineral that occurs generally as an accessory mineral in granite pegmatites, but can also be found in carbonatites, and as detritus in placer deposits. It is paramagnetic, and is attracted in the presence of an external magnetic field.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/ferrocolumbite.pdf

Formula
Fe2+Nb2O6 
Crystal System
Orthorhombic 
Crystal Habit
Massive - Granular, Striated 
Cleavage
Distinct, None, None 
Luster
Sub Metallic 
Color
black, brownish black 
Streak
blackish brown 
Class
Orthorhombic - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
WebMineral
View Columbite-(Fe) 
Mindat
View Columbite-(Fe) 

Columbite-(Fe) from King Lithia mine, Pennington Co., South Dakota, United States

Columbite-(Fe)
            from King Lithia mine, Pennington Co., South Dakota, United States

1.5cm black, tabular Columbite crystal.

Click thumbnail images for larger view.

Columbite-(Fe) from Duncan's mine, Little Wonder, Custer Co., South Dakota

Columbite-(Fe)
            from Duncan's mine, Little Wonder, Custer Co., South Dakota

4cm crystal

Click thumbnail images for larger view.

Columbite-(Fe) from Ingersoll mine, Pennington Co., South Dakota, United States

Columbite-(Fe)
            from Ingersoll mine, Pennington Co., South Dakota, United States

1 cm crystal

Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2018 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map