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Tombarthite-(Y)

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Formula:
Y4(Si,H4)4O12-x(OH)4+2x
(x ≤ 4)
Colour:
Brown- black
Lustre:
Dull
Hardness:
5 - 6
Crystal System:
Monoclinic
Name:
Named after Thomas Fredrik Weiby Barth (1899-1971), professor of geology, Oslo University, Norway.
This page provides mineralogical data about Tombarthite-(Y).


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Classification of Tombarthite-(Y)Hide

Discredited
Approval Year:
1967
Approval History:
IMA 16-K proposal accepted: discreditation; all samples proved to be of heterogenous nature
9.AD.35

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
51.5.3.2

51 : NESOSILICATES Insular SiO4 Groups Only
5 : Insular SiO4 Groups Only with cations in >[6] coordination
14.8.4

14 : Silicates not Containing Aluminum
8 : Silicates of Group III metals other than Al

Physical Properties of Tombarthite-(Y)Hide

Colour:
Brown- black
Hardness:
5 - 6 on Mohs scale
Fracture:
Conchoidal

Chemical Properties of Tombarthite-(Y)Hide

Formula:
Y4(Si,H4)4O12-x(OH)4+2x

(x ≤ 4)

Crystallography of Tombarthite-(Y)Hide

Crystal System:
Monoclinic
Comment:
Partially metamict

First Recorded Occurrence of Tombarthite-(Y)Hide

General Appearance of First Recorded Material:
Brownish black masses
Geological Setting of First Recorded Material:
Precambrian granite pegmatite dyke

Synonyms of Tombarthite-(Y)Hide

Other Language Names for Tombarthite-(Y)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Biotite1 photo of Tombarthite-(Y) associated with Biotite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AD.05LarniteCa2SiO4Mon.
9.AD.10Calcio-olivineCa2SiO4Orth. mmm (2/m 2/m 2/m)
9.AD.15MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
9.AD.20BredigiteCa7Mg(SiO4)4Orth.
9.AD.25AndraditeCa3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25AlmandineFe2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.
9.AD.25GoldmaniteCa3V3+2(SiO4)3Iso.
9.AD.25GrossularCa3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25HenritermieriteCa3(Mn3+,Al)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AD.25HibschiteCa3Al2(SiO4)3-x(OH)4xIso. m3m (4/m 3 2/m) : Ia3d
9.AD.25HydroandraditeCa3Fe3+2(SiO4)3-x(OH)4x
9.AD.25KatoiteCa3Al2(SiO4)3-x(OH)4xIso.
9.AD.25KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3Iso.
9.AD.25KnorringiteMg3Cr2(SiO4)3Iso.
9.AD.25MajoriteMg3(Fe2+,Si,Al)2(SiO4)3Iso.
9.AD.25MorimotoiteCa3(Ti,Fe2+,Fe3+)2((Si,Fe3+)O4)3Iso.
9.AD.25PyropeMg3Al2(SiO4)3Iso.
9.AD.25SchorlomiteCa3(Ti,Fe3+)2((Si,Fe3+)O4)3Iso.
9.AD.25SpessartineMn2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25UvaroviteCa3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 4 3m : I4 3d
9.AD.25HoltstamiteCa3(Al,Mn3+)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AD.25KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Momoiite(Mn2+,Ca)3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25EltyubyuiteCa12Fe3+10Si4O32Cl6Iso. 4 3m : I4 3d
9.AD.25HutcheoniteCa3Ti2(SiAl2)O12Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.30Coffinite(U4+,Th)(SiO4)1-x(OH)4xTet.
9.AD.30HafnonHfSiO4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30ThoriteTh(SiO4)Tet.
9.AD.30ZirconZr(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30Stetindite-(Ce)Ce(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.35HuttoniteThSiO4Mon.
9.AD.40EulytineBi4(SiO4)3Iso. 4 3m : I4 3d
9.AD.45ReiditeZrSiO4Tet. 4/m : I41/a

Related Minerals - Dana Grouping (8th Ed.)Hide

51.5.3.1HuttoniteThSiO4Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.8.1Thalénite-(Y)Y3Si3O10FMon.
14.8.2Keiviite-(Y)Y2Si2O7
14.8.3Keiviite-(Yb)Yb2Si2O7Mon. 2/m : B2/m
14.8.5ThortveititeSc2Si2O7Mon.
14.8.6Sazhinite-(Ce)Na2CeSi6O14•6H2O
14.8.7Monteregianite-(Y)(Na,K)6(Y,Ca)2Si16O38 · 10H2OMon. 2/m
14.8.8Iraqite-(La)KCa2(La,Ce,Th)Si8O20Tet.
14.8.9Ashcroftine-(Y)K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8 · 8H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
14.8.10Nordite-(La)(La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
14.8.11Nordite-(Ce)(Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17
14.8.12JervisiteNaSc3+Si2O6Mon.
14.8.13Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
14.8.14CascanditeCa(Sc,Fe3+)(HSi3O9)Tric.

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 Tombarthite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Neumann, H. & Nilssen, B. (1968): Tombarthite, a new mineral from Høgetveit, Evje, South Norway. Lithos: 1: 113-123.
American Mineralogist (1969): 54: 327-328.
Raade, G. (1996) Minerals originally described from Norway. Including notes on type material. Norsk Bergverksmuseum Skrift: 11: 71
Friis, H. (2016): Hva er tombarthite-(Y)?. Norsk Mineralsymposium 2016: 13-19
CNMNC Newsletter No. 34, December 2016.

Internet Links for Tombarthite-(Y)Hide

Localities for Tombarthite-(Y)Hide

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.
Norway (FRL)
 
  • Aust-Agder
    • Evje og Hornnes
Neumann, H. & Nilssen, B. (1968): Tombarthite, a new mineral from Høgetveit, Evje, South Norway. Lithos, 1: 113-123.; Raade, G. (1996): Minerals originally described from Norway. Including notes on type material. Norsk Bergverksmuseum Skrift, 11, p 71; CNMNC Newsletter No. 34,
    • Iveland
      • Ivedal
Nilssen, B. (1971): Yttrialite from Ivedal, Iveland, South Norway. Norsk Geologisk Tidsskrift 51, 1-8; CNMNC Newsletter No. 34.
  • Vest-Agder
    • Vennesla
      • Øvrebø
Griffin, W.L., Nilssen, B. & Jensen, B.B. (1979): Britholite-(Y) and its alteration: Reiarsdal, Vest-Agder, south Norway. Norsk Geologisk Tidsskrift 59: 265-271; CNMNC Newsletter No. 34.
Mineral and/or Locality  
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