Warning: session_start(): open(/var/lib/php/sessions/sess_qm3jnihdujcctc1ore788l03fk, O_RDWR) failed: No space left on device (28) in /home/mindat/www/include.php on line 3758

Warning: session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in /home/mindat/www/include.php on line 3758
Tamaite: Mineral information, data and localities.
SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About TamaiteHide

(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O
Colourless to pale yellowish brown
Vitreous, Pearly
Crystal System:
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.

Classification of TamaiteHide


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

Physical Properties of TamaiteHide

Vitreous, Pearly
Colourless to pale yellowish brown

Optical Data of TamaiteHide

Biaxial (-)
r < v slight

Chemical Properties of TamaiteHide

(Ca,K,Ba,Na)3-4Mn24(Si,Al)40(O,OH)112 · 21H2O
IMA Formula:
(Ca,K,Na)xMn6(Si,Al)10O24(OH)4 · nH2O (x = 1-2; n = 7-11)

Crystallography of TamaiteHide

Crystal System:

Crystal StructureHide

Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
CIF File    Best | x | y | z | a | b | c
Stop | Start
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0003154TamaiteHughes J M, Rakovan J F, Bracco R, Gunter M E (2003) The atomic arrangemetn of the ganophyllite-group modulated layer silicates as determined from the orthorhombic dimorph of tamaite, with the elusive 16.8 A ganophyllite-group superstructure revealed American Mineralogist 88 1324-133020030293
CIF Raw Data - click here to close

Type Occurrence of TamaiteHide

Synonyms of TamaiteHide

Other Language Names for TamaiteHide

Simplified Chinese:塔玛水硅锰钙石
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.15DmisteinbergiteCa(Al2Si2O8)Trig. 3 2 : P3 1 2
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.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.45Tuscanite(K(Ca,Na)6(Si,Al)10O22[SO4,CO3,(OH)2] · H2OMon.
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.
  • Liguria
    • Genoa
      • Ne
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
  • Piedmont
    • Cuneo Province
      • Bellino
Piccoli, G.C., Vanini, F., Ciriotti, M.E., Marengo, A., Bittarello, E., Cámara, F., Kolitsch, U., Bracco, R., Balestra, C., Odicino, G., Brizio, P. (2020): Eggletonite e tamaite del Monte Maniglia, Bellino, Cuneo, Piemonte con aggiornamento sulla mineralogia locale. Micro, 18, 60-66.
Japan (TL)
  • Tokyo Metropolis
    • Nishitama district
      • 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).; Tanaka, T. & Hamane, D. (2016) Epidote-(Sr) from Shiromaru mine, Tokyo prefecture, Japan. (conference presentation R1-P14)
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 26, 2020 15:27:07 Page generated: October 19, 2020 14:27:09
Go to top of page