Titanoholtite

From Wikipedia, the free encyclopedia
Titanoholtite
General
CategorySilicate mineral
Formula
(repeating unit)		(Ti0.75[]0.25)Al6BSi3O18
IMA symbolThlt[1]
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupPbcm
Unit cella = 47.00 Å, b = 11.83 Å
c = 20.24 Å
Identification
References[2][3]

Titanoholtite is an extremely rare mineral with the formula (Ti0.75[]0.25)Al6BSi3O18. It is titanium-rich member of dumortierite supergroup, and titanium-analogue of holtite of the holtite group. It is one of three quite recently found minerals of this group, the other two being nioboholtite and szklaryite, all coming from the Szklary village near Ząbkowice Śląskie in Poland. They occur in a unique pegmatite of probable anatectic origin.[2][3]

Association[]

Titanoholtite is closely associated with and nioboholtite; its further association is very rich (see szklaryite).[2]

Notes on chemistry[]

Impurities in titanoholtite are mainly antimony and arsenic, with trace niobium, tantalum, titanium, and iron.[2]

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. ^ a b c d Pieczka, A.; Evans, R. J.; Grew, E. S.; Groat, L. A.; Ma, C.; Rossman, G. R. (2013). "The dumortierite supergroup. II. Three new minerals from the Szklary pegmatite, SW Poland: Nioboholtite, (Nb0.6〈0.4)Al6BSi3O18, titanoholtite, (Ti0.75〈0.25)Al6BSi3O18, and szklaryite, 〈Al6BAs3+3O15". Mineralogical Magazine. 77 (6): 2841. Bibcode:2013MinM...77.2841P. doi:10.1180/minmag.2013.077.6.10. S2CID 51740732.
  3. ^ a b "Titanoholtite: Titanoholtite mineral information and data". Mindat.org. Retrieved 2016-03-03.


Stub icon

This article about a specific silicate mineral is a stub. You can help Wikipedia by .

  • v
  • t
Retrieved from ""