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Titanoholtite

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Ti-analogue of nioboholtite.


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Classification of TitanoholtiteHide

Approved
Approval Year:
2012

Physical Properties of TitanoholtiteHide

Density:
3.66 g/cm3 (Calculated)

Chemical Properties of TitanoholtiteHide

Formula:
(Ti0.750.25)Al6BSi3O18
IMA Formula:
(Ti0.750.25)Al6BSi3O18

Crystallography of TitanoholtiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbcm
Cell Parameters:
a = 47.001 Å, b = 11.828 Å, c = 20.243 Å
Ratio:
a:b:c = 3.974 : 1 : 1.711
Unit Cell V:
11,253.65 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.213(46)
5.914(47)
5.861(78)
3.458(63)
3.231(100)
3.068(53)
2.931(59)
2.895(65)
Comments:
From Type Description.

Type Occurrence of TitanoholtiteHide

General Appearance of Type Material:
patches up to 10 μm across and streaks up to 5 μm wide, located in the cores of holtite or along the boundaries between the holtite cores and nioboholtite rim
Place of Conservation of Type Material:
Mineralogical Museum of the University of Wrocław, Wrocław, Poland, catalogue number MMWr IV7617; cotype specimens are also deposited in the same Museum, catalogue numbers MMWr IV7620 and MMWr IV7621, and in the collections of the Smithsonian Institution,
Geological Setting of Type Material:
Szklary serpentinite massif, c. 60 km south of Wrocław, Lower Silesia, Poland (50º39.068’N 16º49.932’E)
Associated Minerals at Type Locality:

Synonyms of TitanoholtiteHide

Relationship of Titanoholtite to other SpeciesHide

Other Members of this group:
Holtite(Ta0.60.4)Al6BSi3O18(O,OH)2.25Orth. mmm (2/m 2/m 2/m) : Pnma
Nioboholtite(Nb0.60.4)Al6BSi3O18Orth. mmm (2/m 2/m 2/m) : Pbcm

Common AssociatesHide

Associated Minerals Based on Photo Data:
Nioboholtite1 photo of Titanoholtite associated with Nioboholtite on mindat.org.
Holtite1 photo of Titanoholtite associated with Holtite on mindat.org.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TitanoholtiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pieczka, A., Evans, R.J., Grew, E.S., Groat, L.A., Ma, C. and Rossman, G.R. (2013) Titanoholtite, IMA 2012-069. CNMNC Newsletter No. 15, February 2013, page 7; Mineralogical Magazine, 77, 1-12.
Pieczka, A., Evans, R.J., Grew, E.S., Groat, L.A., Ma, C., and Rossman, G.R. (2013a) 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), 2841-2856

Internet Links for TitanoholtiteHide

Localities for TitanoholtiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Poland (TL)
 
  • Lower Silesia (Dolnośląskie)
    • Ząbkowice Slaskie District
      • Ząbkowice (Frankenstein)
        • Szklary (Gläsendorf)
Pieczka, A., Evans, R.J., Grew, E.S., Groat, L.A., Ma, C. and Rossman, G.R. (2013) Titanoholtite, IMA 2012-069. CNMNC Newsletter No. 15, February 2013, page 7; Mineralogical Magazine, 77, 1-12.; 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. 6⃞0. 4) Al6BSi3O18, titanoholtite,(Ti0. 75⃞0. 25) Al6BSi3O18, and szklaryite, ⃞Al6BAs33+ O15. Mineralogical Magazine, 77(6), 2841-2856.
Russia
 
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Karabash (Karabasch)
          • Uvil'dy lake
Anatoly Kasatkin analytical data 2016
Mineral and/or Locality  
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