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Tamaite

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Formula:
(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O
Colour:
Colourless to pale yellowish brown
Lustre:
Vitreous, Pearly
Hardness:
4
Crystal System:
Monoclinic
Name:
For the type locality, the Shiromaru Mine, Okutama, Tama District, Tokyo, Japan.
Ganophyllite Group. A very similar (or identical?) phase is known as UM1990-61-SiO:AlCaHKMnNa.


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Classification of TamaiteHide

Approved
9.EG.30

9 : SILICATES (Germanates)
E : Phyllosilicates
G : Double nets with 6-membered and larger rings

Physical Properties of TamaiteHide

Vitreous, Pearly
Transparency:
Transparent
Colour:
Colourless to pale yellowish brown
Streak:
White
Hardness:

Optical Data of TamaiteHide

Type:
Biaxial (-)
Dispersion:
r < v slight

Chemical Properties of TamaiteHide

Formula:
(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O
IMA Formula:
(Ca,K,Ba,Na)xMn6(Si,Al)10O24(OH)4 · nH2O

Crystallography of TamaiteHide

Crystal System:
Monoclinic

Type Occurrence of TamaiteHide

Synonyms of TamaiteHide

Other Language Names for TamaiteHide

German:Tamait
Russian:Тамаит
Simplified Chinese:塔玛水硅锰钙石
Spanish:Tamaita
Traditional Chinese:塔瑪水矽錳鈣石

Relationship of Tamaite to other SpeciesHide

Other Members of this group:
Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2OMon.
Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2OMon.

Related Minerals - Nickel-Strunz GroupingHide

9.EG.05CymriteBaAl2Si2(O,OH)8 · H2OMon.
9.EG.10Naujakasite(Na,K)6(Fe2+,Mn2+,Ca)(Al,Fe)4Si8O26Mon. 2/m : B2/m
9.EG.10ManganonaujakasiteNa6(Mn2+,Fe2+)Al4Si8O26Mon.
9.EG.15DmisteinbergiteCa(Al2Si2O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
9.EG.20KampfiteBa12(Si11Al5)O31(CO3)8Cl5Mon. m
9.EG.25SträtlingiteCa2Al2SiO7 · 8H2OTrig.
9.EG.25VertumniteCa4Al4Si4O6(OH)24 · 3H2OMon. 2/m : P21/m
9.EG.30Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2OMon.
9.EG.30Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2OMon.
9.EG.35CoombsiteK(Mn,Fe,Mg)13(Si,Al)18O42(OH)14Trig.
9.EG.35ZussmaniteK(Fe,Mg,Mn)13(Si,Al)18O42(OH)14Trig. 3 : R3
9.EG.40Franklinphilite(K,Na)4(Mn2+,Mg,Zn)48(Si,Al)72(O,OH)216 · 6H2OTric.
9.EG.40LennilenapeiteK6-7(Mg,Mn,Fe,Zn)48(Si,Al)72(O,OH)216 · 16H2OTric.
9.EG.40Parsettensite(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2OMon. 2/m : B2/m
9.EG.40Stilpnomelane(K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2OTric. 1 : P1
9.EG.45Latiumite(Ca,K)4(Si,Al)5O11(SO4,CO3)Mon.
9.EG.45Tuscanite(K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2OMon.
9.EG.50JagoitePb18Fe3+4[Si4(Si,Fe3+)6][Pb4Si16(Si,Fe)4]O82Cl6Hex.
9.EG.55WickenburgiteCaPb3Al2Si10O24(OH)6Trig. 3m : P3 1c
9.EG.60HyttsjöitePb18Ba2Ca5Mn2+2Fe3+2Si30O90Cl · 6H2OTrig.
9.EG.65ArmbrusteriteK5Na7Mn15[(Si9O22)4](OH)10 · 4H2OMon. 2/m : B2/m
9.EG.70Britvinite[Pb7(OH)3F(BO3)2(CO3)][Mg4.5(OH)3(Si5O14)]Tric. 1 : P1
9.EG.75Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2OMon. 2/m : B2/b

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 TamaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Matsubara, S., Miyawaki, R., Tiba, T. and Imai, H. (2000): Tamaite, the Ca-analogue of ganophyllite, from the Shiromaru mine, Okutama,Tokyo, Japan. Journal of Mineralogical and Petrological Sciences, 95, 79-83.
American Mineralogist (2001): 86: 769.

Internet Links for TamaiteHide

Localities for TamaiteHide

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.
Italy
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
Hughes, J.M., Rakovan, J., Bracco, R., Gunther, M.E. (2003): The atomic arrangement of the ganophyllite-group modulated layer silicates as determined from the orthorhombic dimorph of tamaite, with the elusive 16.8 Å ganophyllite-group superstructure revealed. American Mineralogist, 88, 1324-1330
Japan (TL)
 
  • Honshu Island
    • Kanto Region
      • Tokyo Metropolis
        • Nishi-Tama-gun
          • Okutama-cho
[J.Mineral.Petrol.Sci.(2000) 95, 79-83; MinRec 32:419]; Matsubara S, Miyawaki R, Yokoyama K, Shimizu M, Imai H (2004) Tokyoite, Ba2Mn3+(VO4)2(OH), a new mineral from the Shiromaru mine, Okutama, Tokyo, Japan. Journal of Mineralogical and Petrological Sciences 99, 363-367; photo in: Koubutsu Doshikai (2017) Kanto-to Shuhen-no Koubutsu (279pp).
Mineral and/or Locality  
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