Titanowodginite

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Titanowodginite
Titanowodginite.jpg
Black sharp crystals of titanowodginite associated to white beryl from the type locality for the first mineral: Tanco Mine, Bernic Lake, Lac-du-Bonnet, Manitoba, Canada.
General
Category Oxide minerals
Formula
(repeating unit)
MnTiTa2O8
IMA symbol Twdg [1]
Strunz classification 4.DB.40
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group C2/c
Identification
Colordark brown to black
Luster vitreous
Streak dark brown
Diaphaneity translucent
References [2] [3]

Titanowodginite is a mineral with the chemical formula MnTiTa 2 O 8. Titanowodginite has a Mohs hardness of 5.5 and a vitreous luster. It is an iridescent dark brown to black crystal that commonly forms in a matrix of smoky quartz or white beryl in a complex zoned pegmatite. [2] [3] [4]

It was first described in 1992 for an occurrence in the Tanco Mine located in southern Manitoba, Canada. It was named because it is a titanium bearing member of the wodginite group. [2] [4]

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9
(Mg,Fe3+
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4
)
6
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3
OH)(OH)
3
. The cerium and lanthanum content varies with the Ce rich species and the La rich species. Analysis of a sample from the Mountain Pass carbonatite gave 35.05% Ce
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O
3
and 30.04% La
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O
3
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References

  1. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi: 10.1180/mgm.2021.43 . S2CID   235729616.
  2. 1 2 3 http://www.mindat.org/min-3979.html Mindat
  3. 1 2 http://www.webmineral.com/data/Titanowodginite.shtml Webmineral
  4. 1 2 http://rruff.geo.arizona.edu/doclib/hom/titanowodginite.pdf Handbook of Mineralogy