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Titanoholtite

A valid IMA mineral species
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Formula:
(Ti0.75◻0.25)Al6BSi3O18
Specific Gravity:
3.66 (Calculated)
Crystal System:
Orthorhombic
Ti-analogue of nioboholtite.


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Unique IdentifiersHide

Mindat ID:
43589
Long-form identifier:
mindat:1:1:43589:5

IMA Classification of TitanoholtiteHide

IMA status:
Approved
IMA Formula:
(Ti4+0.75◻0.25)Al6BSi3O18
Approval year:
2012

Classification of TitanoholtiteHide

Strunz-mindat (2026):
9.AJ.10

9 : SILICATES (Germanates)
A : Nesosilicates
J : Nesosilicates with BO3 triangles and/or B[4], Be[4] tetrahedra, cornersharing with SiO4

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
ThltIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of TitanoholtiteHide

Density:
3.66 g/cm3 (Calculated)

Chemistry of TitanoholtiteHide

Mindat Formula:
(Ti0.75◻0.25)Al6BSi3O18
Element Weights:
Element% weight
O49.581 %
Al27.871 %
Si14.506 %
Ti6.181 %
B1.861 %

Calculated from ideal end-member formula.
Elements listed:
Al, B, O, Si, Ti - search for minerals with similar chemistry

Crystallography of TitanoholtiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/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 Å(46)
5.914 Å(47)
5.861 Å(78)
3.458 Å(63)
3.231 Å(100)
3.068 Å(53)
2.931 Å(59)
2.895 Å(65)
Locality:
Mt. Szklana Mine (Szklary pegmatite), Szklary, Gmina Ząbkowice Śląskie, Ząbkowice Śląskie County, Lower Silesian Voivodeship, Poland
Comments:
From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of TitanoholtiteHide

Type Locality:
ⓘ Mt. Szklana Mine (Szklary pegmatite), Szklary, Gmina Ząbkowice Śląskie, Ząbkowice Śląskie County, Lower Silesian Voivodeship, Poland
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:
AlluauditeNative AntimonyNative ArsenicBetafite GroupBeusite
Native BismuthCheraliteChlorapatiteChrysoberylColumbite-(Fe)
Columbite-(Mn)DumortieriteErnienickeliteFersmiteFluorapatite
Native GoldGorceixiteHollanditeHoltiteHydroxylapatite
MicroclineMicrolite GroupMitridatiteMonazite-(Ce)Muscovite
NatrophiliteNioboholtiteNontroniteParadocrasitePhosphohedyphane
PlumbogummitePollucitePurpuritePyrochlore GroupQuartz
RanciéiteRomanèchiteSaponiteSpessartineStibarsen
StibiocolumbiteStibiotantaliteTantalite-(Mn)ThorutiteUraninite
Xenotime-(Y)Zircon

Synonyms of TitanoholtiteHide

Other Language Names for TitanoholtiteHide

Relationship of Titanoholtite to other SpeciesHide

Member of:
Holtite Group > Dumortierite Supergroup
Other Members of Holtite Group:
Holtite(Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25Orth. mmm(2/m2/m2/m) : Pnma
Nioboholtite(Nb0.6◻0.4)Al6BSi3O18Orth. mmm(2/m2/m2/m) : Pbcm

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Titanoholtite associated with Nioboholtite(Nb0.6◻0.4)Al6BSi3O18
1 photo of Titanoholtite associated with Holtite(Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25

Related Minerals - Strunz-mindat GroupingHide

9.AJ.Hingganite-(Nd)Nd2◻Be2Si2O8(OH)2Mon. 2/m : P21/b
9.AJ.Arrheniusite-(Ce)CaMg[(Ce7Y3)Ca5](SiO4)4(Si2B3AsO18)(BO3)F11Trig. 3m : R3m
9.AJ.05Ominelite(Fe2+,Mg)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm(2/m2/m2/m)
9.AJ.05Grandidierite(Mg,Fe2+)(Al,Fe3+)3(SiO4)(BO3)O2Orth. mmm(2/m2/m2/m)
9.AJ.10DumortieriteAl(Al2O)(Al2O)2(SiO4)3(BO3)Orth. mmm(2/m2/m2/m)
9.AJ.10Nioboholtite(Nb0.6◻0.4)Al6BSi3O18Orth. mmm(2/m2/m2/m) : Pbcm
9.AJ.10Holtite(Ta0.6◻0.4)Al6BSi3O18(O,OH)2.25Orth. mmm(2/m2/m2/m) : Pnma
9.AJ.10MagnesiodumortieriteMg(Al2OH)(Al2O)2(SiO4)3(BO3)Orth. mmm(2/m2/m2/m)
9.AJ.15GarrelsiteBa3NaSi2B7O16(OH)4Mon. 2/m : B2/b
9.AJ.20'Muromontite'near Be2FeY2Si3O12
9.AJ.20Gadolinite-(Nd)Nd2Fe2+Be2O2(SiO4)2Mon. 2/m : P21/b
9.AJ.20DatoliteCaB(SiO4)(OH)Mon. 2/m : P21/b
9.AJ.20Melanocerite-(Ce)(Ce,Ca)5(SiO4,BO4)3(OH,O)Hex.
9.AJ.20Gadolinite-(Ce)(Ce,La,Nd,Y)2Fe2+Be2Si2O10Mon. 2/m
9.AJ.20Gadolinite-(Y)Y2Fe2+Be2Si2O10Mon. 2/m : P21/b
9.AJ.20'Unnamed (OH-analogue of Gadolinite-(Y))'(Y,Ca)2(Fe,◻)Be2Si2O8(OH,O)2Mon. 2/m
9.AJ.20Hingganite-(Ce)(Ce,REE)2(◻,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Y)(Y,REE,Ca)2(◻,Fe2+)Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20Hingganite-(Yb)(Yb,Y,REE)2◻Be2[SiO4]2(OH)2Mon. 2/m : P21/b
9.AJ.20HomiliteCa2(Fe2+,Mg)B2Si2O10Mon. 2/m : P21/b
9.AJ.20'Minasgeraisite-(Y)'(Ca2Y2)◻2(Be2B2)[SiO4]4(OH)4Tric. 1 : P1
9.AJ.20Calcybeborosilite-(Y)(Y,Ca)2(◻,Fe2+)(B,Be)2[SiO4]2(OH,O)2Mon.
9.AJ.25Stillwellite-(La)LaBSiO5Trig. 32 : P3221
9.AJ.25Stillwellite-(Ce)(Ce,La,Ca)BSiO5Trig. 3 : P31
9.AJ.30Cappelenite-(Y)Ba(Y,Ce)6Si3B6O24F2Trig. 3 : P3
9.AJ.35Laptevite-(Ce)Ca6(Fe2+,Mn2+)Y3REE7(SiO4)3(PO4)(B3Si3O18)(BO3)F11Trig. 3m : R3m
9.AJ.35Proshchenkoite-(Y)Ca(Y,REE,Ca,Na,Mn)15Fe2+(P,Si)Si6B3O34F14Trig. 3m : R3m
9.AJ.35Okanoganite-(Y)(Na,Ca)3(Y,Ce)12Si6B2O27F14Trig. 3m : R3m
9.AJ.35Hundholmenite-(Y)(Y,REE,Ca,Na)15(Al,Fe3+)(CaxAs3+1-x)(Si,As5+)Si6B3(O,F)48Trig. 3m : R3m
9.AJ.35Vicanite-(Ce)(Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7Trig. 3m : R3m
9.AJ.40JadariteLiNaSiB3O7(OH)Mon. 2/m

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.

Internet Links for TitanoholtiteHide

References for TitanoholtiteHide

Localities for TitanoholtiteHide

Showing 2 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Poland (TL)
 
  • Lower Silesian Voivodeship
    • Ząbkowice Śląskie County
      • Gmina Ząbkowice Śląskie
        • Szklary
Mineralogical Magazine +4 other references
Russia
 
  • Chelyabinsk Oblast
    • Karabash
Anatoly Kasatkin analytical data 2016
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