Home > Mineral Descriptions > Manganocolumbite



Manganocolumbite
(Mn,Fe++)(Nb,Ta)2O6

     Manganocolumbite, a member of the columbite family, has been recently identified from Mont Saint-Hilaire.

PHYSICAL CHARACTERISTICS:

Color is usually brownish black or black.
Luster is sub-metallic.
Diaphaneity is opaque.
Crystal System is orthorhombic; Pcan.
Crystal Habits include (??).
Cleavage (??).
Fracture is (??).
Hardness is approximately 6.
Specific Gravity is ~ 5.3 g/cm3.
Streak is brownish-black.
Associated Minerals include (??).
Distinguishing Features: (??).
Origin: Named in 1892 to reflect its composition: the manganese end -
   member of the series with ferrotantalite and manganocolumbite.

CLASSIFICATION:

Dana System
# 8.3.2.4

Strunz Classification
# IV/D.18-20

REFERENCES:
Dana 8:355-356 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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