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Tamaite

Formula:
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
·21H
 
2
O
System:MonoclinicColour:Colourless to pale ...
Lustre:Vitreous, PearlyHardness:4
Name:For the type locality, the Shiromaru Mine, Okutama, Tama District, Tokyo, Japan.


Ganophyllite Group.

Classification of Tamaite

IMA status:Approved
Nickel-Strunz 10th (pending) edition ID:9.EG.30

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

Type Locality:Shiromaru mine (Hakumaru mine), Okutama, Nishi-Tama-gun, Tokyo Prefecture, Kanto Region, Honshu Island, Japan

Physical Properties of Tamaite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent
Colour:Colourless to pale yellowish brown
Streak:White
Hardness (Mohs):4

Crystallography of Tamaite

Crystal System:Monoclinic

Optical Data of Tamaite

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

Chemical Properties of Tamaite

Formula:
(Ca,K,Ba,Na)
 
3-4
Mn
 
24
(Si,Al)
 
40
(O,OH)
 
112
·21H
 
2
O
Essential elements:Ca, H, Mn, O, Si
All elements listed in formula:Al, Ba, Ca, H, K, Mn, Na, O, Si

Relationship of Tamaite to other Species

Related to:
  • Ganophyllite Group
    • Related Minerals - Nickel-Strunz Grouping):
    9.EG.05Cymrite
    BaAl
     
    2
    		Si
     
    2
    		(O,OH)
     
    8
    		·H
     
    2
    		O
    9.EG.10Naujakasite
    (Na,K)
     
    6
    		(Fe
    2+
     
    		,Mn
    2+
     
    		,Ca)(Al,Fe)
     
    4
    		Si
     
    8
    		O
     
    26
    9.EG.10Manganonaujakasite
    Na
     
    6
    		(Mn
    2+
     
    		,Fe
    2+
     
    		)Al
     
    4
    		Si
     
    8
    		O
     
    26
    9.EG.15Dmisteinbergite
    Ca[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
    9.EG.20Kampfite
    Ba
     
    6
    		[(Si,Al)O
     
    2
    		]
     
    8
    		(CO
     
    3
    		)
     
    2
    		Cl
     
    2
    		(Cl,H
     
    2
    		O)
     
    2
    9.EG.25Strätlingite
    Ca
     
    2
    		Al
     
    2
    		SiO
     
    7
    		·8H
     
    2
    		O
    9.EG.25Vertumnite
    Ca
     
    4
    		Al
     
    4
    		Si
     
    4
    		O
     
    6
    		(OH)
     
    24
    		·3H
     
    2
    		O
    9.EG.30Eggletonite
    (Na,K,Ca)
     
    2
    		(Mn,Fe)
     
    8
    		(Si,Al)
     
    12
    		O
     
    29
    		(OH)
     
    7
    		·11H
     
    2
    		O
    9.EG.30Ganophyllite
    (K,Na,Ca)
     
    2
    		Mn
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    32
    		·8H
     
    2
    		O
    9.EG.35Coombsite
    K(Mn,Fe,Mg)
     
    13
    		(Si,Al)
     
    18
    		O
     
    42
    		(OH)
     
    14
    9.EG.35Zussmanite
    K(Fe,Mg,Mn)
     
    13
    		(Si,Al)
     
    18
    		O
     
    42
    		(OH)
     
    14
    9.EG.40Bannisterite
    Ca
     
    0.5
    		(K,Na)
     
    0.5
    		(Mn,Fe,Zn)
     
    10
    		(Si,Al)
     
    16
    		O
     
    38
    		(OH)
     
    8
    		·5.5H
     
    2
    		O
    9.EG.40Franklinphilite
    (K,Na)
     
    4
    		(Mn,Zn,Mg,Fe)
     
    48
    		(Si,Al)
     
    72
    		(O,OH)
     
    216
    		·6H
     
    2
    		O
    9.EG.40Lennilenapeite
    K
     
    6-7
    		(Mg,Mn,Fe,Zn)
     
    48
    		(Si,Al)
     
    72
    		(O,OH)
     
    216
    		·16H
     
    2
    		O
    9.EG.40Parsettensite
    K
     
    1.2
    		Mn
     
    8
    		(Si,Al)
     
    12
    		O
     
    26
    		(OH)
     
    10
    9.EG.40Stilpnomelane
    K(Fe
    2+
     
    		,Mg,Fe
    3+
     
    		)
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    27
    9.EG.45Latiumite
    K
     
    2
    		Ca
     
    6
    		(Si,Al)
     
    11
    		O
     
    25
    		(SO
     
    4
    		,CO
     
    3
    		)
    9.EG.45Tuscanite
    (K(Ca,Na)
     
    6
    		(Si,Al)
     
    10
    		O
     
    22
    		[SO
     
    4
    		,CO
     
    3
    		,(OH)
     
    2
    		]·H
     
    2
    		O
    9.EG.50Jagoite
    (Pb,Ca)
     
    3
    		FeSi
     
    3
    		O
     
    10
    		(Cl,OH)
    9.EG.55Wickenburgite
    CaPb
     
    3
    		Al
     
    2
    		Si
     
    10
    		O
     
    24
    		(OH)
     
    6
    9.EG.60Hyttsjöite
    Pb
     
    18
    		Ba
     
    2
    		Ca
     
    5
    		Mn
    2+
    2
    		Fe
    3+
    2
    		Si
     
    30
    		O
     
    90
    		Cl·6H
     
    2
    		O
    9.EG.65Armbrusterite
    K
     
    5
    		Na
     
    7
    		Mn
     
    15
    		[(OH)
     
    10
    		|(Si
     
    9
    		O
     
    22
    		)
     
    4
    		] · 4H
     
    2
    		O
    9.EG.70Britvinite
    [Pb
     
    7
    		(OH)
     
    3
    		F(BO
     
    3
    		)
     
    2
    		(CO
     
    3
    		)][Mg
     
    4.5
    		(OH)
     
    3
    		(Si
     
    5
    		O
     
    14
    		)]

    Other Names for Tamaite

    Synonyms:
    IMA1999-011
    German names:
    Tamait
    Russian names:
    Тамаит
    Spanish names:
    Tamaita

    Other Information

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

    References for Tamaite

    Reference List: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 Tamaite

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    Localities for Tamaite

    Hide Locality List
    The 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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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Tokyo Prefecture
          • Nishi-Tama-gun
            • Okutama
    		[J.Mineral.Petrol.Sci.(2000) 95, 79-83; MinRec 32:419]
    Mineral and/or Locality
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