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Murmanite

Formula:
Na
 
2
(Ti,Nb)
 
2
Si
 
2
O
 
9
·nH
 
2
O
System:TriclinicColour:Lilac to pink, alters to ...
Hardness:2½ - 3


Murmanite Group.

Classification of Murmanite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/E.15-10
Nickel-Strunz 10th (pending) edition ID:9.BE.27

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
Dana 8th edition ID:56.2.7.2

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Hey's CIM Ref.:17.8.2

17 : Silicates Containing other Anions
8 : Silicates with niobate or tantalate
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Type Occurrence of Murmanite

Co-type Localities:Chinglusuai River Valley, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Raslak Cirques, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1923

Physical Properties of Murmanite

Lustre:Greasy, Pearly
Diaphaneity (Transparency):Opaque
Colour:Lilac to pink, alters to silvery white-yellow, brown to black.
Streak:Pink to red or brown
Hardness (Mohs):2½ - 3

Crystallography of Murmanite

Crystal System:Triclinic
Cell Parameters:a = 10.53Å, b = 13.88Å, c = 11.68Å
α = 94.31°, β = 98.62°, γ = 89.81°
Ratio:a:b:c = 0.759 : 1 : 0.841
Unit Cell Volume:V 1,683.00 ų (Calculated from Unit Cell)

Optical Data of Murmanite

Type:Biaxial (-)
RI values: nα = 1.682 - 1.735 nβ = 1.765 - 1.770 nγ = 1.807 - 1.839
2V:Measured: 57° to 64°, Calculated: 66° to 74°
Maximum Birefringence:δ = 0.125

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r > v weak

Chemical Properties of Murmanite

Formula:
Na
 
2
(Ti,Nb)
 
2
Si
 
2
O
 
9
·nH
 
2
O
Essential elements:H, Na, O, Si, Ti
All elements listed in formula:H, Na, Nb, O, Si, Ti
Common Impurities:Zr,Fe,Ta,Mn,Mg,Ca,K,P

Relationship of Murmanite to other Species

Related to:
  • Murmanite Group
  • Related Minerals - Nickel-Strunz Grouping):
    9.BE.02Wadsleyite
    (Mg,Fe
    2+
     
    )
     
    2
    [SiO
     
    4
    ]
    9.BE.05Hennomartinite
    SrMn
    3+
    2
    [(OH)
     
    2
    |Si
     
    2
    O
     
    7
    ] · H
     
    2
    O
    9.BE.05Lawsonite
    CaAl
     
    2
    [(OH)
     
    2
    |Si
     
    2
    O
     
    7
    ] · H
     
    2
    O
    9.BE.05Noelbensonite
    BaMn
    3+
    2
    [(OH)
     
    2
    |Si
     
    2
    O
     
    7
    ] · H
     
    2
    O
    9.BE.05Itoigawaite
    SrAl
     
    2
    [(OH)
     
    2
    |Si
     
    2
    O
     
    7
    ] · H
     
    2
    O
    9.BE.07Ilvaite
    CaFe
    2+
    2
    Fe
    3+
     
    [O|OH|Si
     
    2
    O
     
    7
    ]
    9.BE.07Manganilvaite
    Ca(Mn
    2+
     
    ,Fe
    2+
     
    )
     
    2
    Fe
    3+
     
    [O|OH|Si
     
    2
    O
     
    7
    ]
    9.BE.10Suolunite
    Ca
     
    2
    [H
     
    2
    Si
     
    2
    O
     
    7
    ] · H
     
    2
    O
    9.BE.12Jaffeite
    Ca
     
    6
    [(OH)
     
    6
    |Si
     
    2
    O
     
    7
    ]
    9.BE.15Fresnoite
    Ba
     
    2
    Ti[O|Si
     
    2
    O
     
    7
    ]
    9.BE.17Baghdadite
    Ca
     
    3
    (Zr,Ti)[O
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Burpalite
    Na
     
    2
    CaZr[F
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Cuspidine
    Ca
     
    4
    [(F,OH)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Hiortdahlite
    (Ca,Na)
     
    3
    (Zr,Ti)Si
     
    2
    O
     
    7
    (O,OH,F)
     
    2
    9.BE.17Janhaugite
    (Na,Ca)
     
    3
    (Mn,Fe)
     
    3
    (Ti,Zr,Nb)
     
    2
    Si
     
    4
    O
     
    15
    (OH,F,O)
     
    3
    9.BE.17Låvenite
    (Na,Ca)
     
    2
    (Mn
    2+
     
    ,Fe
    2+
     
    )(Zr,Ti)[(O,OH,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Niocalite
    (Ca,Nb)
     
    4
    [(O,OH,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Normandite
    NaCa(Mn,Fe)(Ti,Nb,Zr)[(O,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Wöhlerite
    NaCa
     
    2
    (Zr,Nb)[(O,OH,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.17Hiortdahlite I
    (Na
     
    3
    Ca)Ca
     
    8
    Zr
     
    2
    (M
    3+
     
    )
     
    2
    (Si
     
    2
    O
     
    7
    )
     
    4
    O
     
    3
    F
     
    5
    9.BE.17IMA2005-005a
    Na
     
    2
    Ca
     
    4
    (Nb,Zr)
     
    2
    [(O,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.20Mosandrite
    (Ca,Na,Ce)
     
    12
    (Ti,Zr)
     
    2
    [F
     
    4
    |(OH)
     
    6
    |SiO
     
    4
    |(Si
     
    2
    O
     
    7
    )
     
    3
    ]
    9.BE.20Nacareniobsite-(Ce)
    Na
     
    3
    Ca
     
    3
    (Ce,La,Nd)Nb[F
     
    3
    |O|(Si
     
    2
    O
     
    7
    )
     
    2
    ]
    9.BE.20Rinkite
    Na(Na,Ca)
     
    2
    (Ca,Ce)
     
    4
    Ti[F
     
    2
    |(O,F)
     
    2
    |(Si
     
    2
    O
     
    7
    )
     
    2
    ]
    9.BE.22Götzenite
    Na
     
    2
    Ca
     
    5
    Ti[F
     
    4
    |(Si
     
    2
    O
     
    7
    )
     
    2
    ]
    9.BE.22Hainite
    Na
     
    4
    Ca
     
    8
    (Ti,Zr,Mn)
     
    3
    [F
     
    4
    |(Si
     
    2
    O
     
    7
    )
     
    2
    ]
     
    2
    9.BE.22Rosenbuschite
    (Ca,Na)
     
    3
    (Zr,Ti)[O|F|Si
     
    2
    O
     
    7
    ]
    9.BE.22Kochite
    (Na,Ca)
     
    3
    Ca
     
    2
    (Mn,Ca)ZrTi[(F,O)
     
    4
    |(Si
     
    2
    O
     
    7
    )
     
    2
    ]
    9.BE.23Dovyrenite
    Ca
     
    6
    Zr(Si
     
    2
    O
     
    7
    )
     
    2
    (OH)
     
    4
    9.BE.25Barytolamprophyllite
    (Ba,Na)
     
    2
    (Na,Ti,Fe
    3+
     
    )
     
    4
    Ti
     
    2
    [O|(OH,F)|Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.25Ericssonite
    BaMn
    2+
    2
    Fe
    3+
     
    [O|OH|Si
     
    2
    O
     
    7
    ]
    9.BE.25Lamprophyllite
    (Sr,K,Ba)
     
    2
    (Na,Ti,Mn
    2+
     
    ,Fe
    3+
     
    )
     
    4
    Ti
     
    2
    [O|(O,OH,F)|Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.25Orthoericssonite
    BaMn
    2+
    2
    Fe
    3+
     
    [O|OH|Si
     
    2
    O
     
    7
    ]
    9.BE.25Seidozerite
    Na
     
    8
    Zr
     
    3
    Ti
     
    3
    Mn
    2+
    2
    [O|F|Si
     
    2
    O
     
    7
    ]
     
    4
    9.BE.25Nabalamprophyllite
    Na
     
    3
    (Ba,Na)
     
    2
    Ti
     
    3
    [O|(OH,F)|Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.25Grenmarite
    (Zr,Mn)
     
    2
    (Zr,Ti)(Mn,Na)(Na,Ca)
     
    4
    (Si
     
    2
    O
     
    7
    )
     
    2
    (O,F)
     
    4
    9.BE.30Epistolite
    Na
     
    2
    (Nb,Ti)
     
    2
    [O
     
    2
    |Si
     
    2
    O
     
    7
    ] · nH
     
    2
    O
    9.BE.32Lomonosovite
    Na
     
    5
    Ti
     
    2
    [O
     
    2
    |PO
     
    4
    |Si
     
    2
    O
     
    7
    ]
    9.BE.35Vuonnemite
    Na
     
    11
    Ti
    4+
     
    Nb
     
    2
    (Si
     
    2
    O
     
    7
    )
     
    2
    (PO
     
    4
    )
     
    2
    O
     
    3
    (F,OH)
    9.BE.37Sobolevite
    Na
     
    12
    Ca(NaCaMn)Ti
     
    2
    (Si
     
    2
    O
     
    7
    )
     
    2
    (PO
     
    4
    )
     
    4
    O
     
    3
    F
     
    3
    9.BE.40Innelite
    Na
     
    2
    (Ba,K)
     
    4
    (Mg,Ca,Fe)Ti
     
    3
    Si
     
    4
    O
     
    18
    (OH,F)
     
    1.5
    SO
     
    4
    9.BE.40Phosphoinnelite
    Ba
     
    4
    Na
     
    3
    Ti
     
    3
    [(O,F)
     
    3
    |(PO
     
    4
    ,SO
     
    4
    )
     
    2
    |Si
     
    4
    O
     
    14
    ]
    9.BE.42Yoshimuraite
    Ba
     
    2
    Mn
     
    2
    TiOSi
     
    2
    O
     
    7
    (PO
     
    4
    )(OH)
    9.BE.45Quadruphite
    Na
     
    14
    Ca
     
    2
    Ti
     
    4
    [O
     
    2
    |F|(PO
     
    4
    )
     
    2
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.47Polyphite
    Na
     
    5
    (Na
     
    4
    Ca
     
    2
    )Ti
     
    2
    (Si
     
    2
    O
     
    7
    )(PO
     
    4
    )
     
    3
    O
     
    2
    F
     
    2
    9.BE.50Bornemanite
    BaNa
     
    4
    Ti
     
    2
    NbSi
     
    4
    O
     
    17
    (F,OH)·Na
     
    3
    PO
     
    4
    9.BE.50Shkatulkaite
    Na
     
    10
    Mn
    2+
     
    Ti
     
    3
    Nb
     
    3
    [(OH)
     
    2
    |F|(Si
     
    2
    O
     
    7
    )
     
    6
    ] · 12H
     
    2
    O
    9.BE.50Shkatulkalite
    9.BE.50Bykovaite
    BaNa(Na,Ti)
     
    4
    [(OH,F)
     
    2
    |(Ti,Nb)
     
    2
    Si
     
    4
    O
     
    14
    (O,OH)
     
    3
    ] · 3H
     
    2
    O
    9.BE.55Bafertisite
    Ba(Fe
    3+
     
    ,Mn
    2+
     
    )
     
    2
    Ti[O|(O,OH)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.55Hejtmanite
    Ba(Mn
    2+
     
    ,Fe
    2+
     
    )
     
    2
    Ti[O|(OH,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.55Nechelyustovite
    (Ba,Na)
     
    2
    {(Na,Ti,Mn)
     
    4
    [(Ti,Nb)
     
    2
    (OH)
     
    3
    Si
     
    4
    O
     
    14
    ](OH,O,F)
     
    2
    } · 3H
     
    2
    O
    9.BE.60Delindeite
    (Na,K)
     
    2.7
    (Ba,Ca)
     
    4
    (Ti,Fe,Al)
     
    6
    Si
     
    8
    O
     
    26
    (OH)
     
    14
    9.BE.65Bussenite
    Na
     
    2
    Ba
     
    2
    FeTiSi
     
    2
    O
     
    7
    (CO
     
    3
    )(OH)
     
    3
    F
    9.BE.67Jinshajiangite
    (Na,Ca)(Ba,K)(Fe,Mn)
     
    4
    Ti
     
    2
    Si
     
    4
    O
     
    16
    (F,O,OH)
     
    2-3
    9.BE.67Perraultite
    (Na,Ca)(Ba,K)(Mn,Fe)
     
    4
    (Ti,Nb)
     
    2
    Si
     
    4
    O
     
    16
    (OH,F,O)
     
    3
    9.BE.67Surkhobite
    (Ba,K)
     
    2
    CaNaMn
     
    8
    Ti
     
    4
    (Si
     
    2
    O
     
    7
    )
     
    4
    O
     
    4
    (F,OH,O)
     
    6
    9.BE.70Karnasurtite-(Ce)
    (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P)
     
    2
    O
     
    7
    (OH)
     
    4
    ·3H
     
    2
    O
    9.BE.70Perrierite-(Ce)
    (Ce,Ca,Th)
     
    4
    (Mg,Fe
    2+
     
    )
     
    2
    (Ti,Fe
    3+
     
    )
     
    3
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Strontiochevkinite
    (Sr,La,Ce,Ca)
     
    4
    Fe
    3+
     
    (Ti,Zr)
     
    2
    Ti
     
    2
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Chevkinite-(Ce)
    (Ce,La,Ca,Na,Th)
     
    4
    (Fe
    2+
     
    ,Mg)(Fe
    3+
     
    ,Ti,Fe
    2+
     
    )
     
    2
    (Ti,Fe
    3+
     
    ,Nb)
     
    2
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Polyakovite-(Ce)
    (Ce,Ca)
     
    4
    (Mg,Fe
    2+
     
    )(Cr
    3+
     
    ,Fe
    3+
     
    )
     
    2
    (Ti,Nb)
     
    2
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Rengeite
    Sr
     
    4
    ZrTi
     
    4
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Matsubaraite
    Sr
     
    4
    Ti
     
    5
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Dingdaohengite-(Ce)
    Ce
     
    4
    Fe
    2+
     
    Ti
     
    2
    Ti
     
    2
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Maoniupingite-(Ce)
    (REE,Ca)
     
    4
    (Fe
    3+
     
    ,Ti,Fe
    2+
     
    ,[])(Ti,Fe
    3+
     
    ,Fe
    2+
     
    ,Nb)
     
    4
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.70Perrierite-(La)
    (La,Ce, Ca)
     
    4
    (Fe,Mn
    2+
     
    ,Mg)(Ti,Fe)
     
    4
    [O
     
    4
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.72Fersmanite
    (Ca,Na)
     
    4
    (Ti,Nb)
     
    2
    Si
     
    2
    O
     
    11
    (F,OH)
     
    2
    9.BE.75Belkovite
    Ba
     
    3
    (Nb,Ti)
     
    6
    [O
     
    6
    |Si
     
    2
    O
     
    7
    ]
     
    2
    9.BE.77Nasonite
    Pb
     
    6
    Ca
     
    4
    [Cl
     
    2
    |(Si
     
    2
    O
     
    7
    )
     
    3
    ]
    9.BE.80Kentrolite
    Pb
     
    2
    Mn
    3+
    2
    [O
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.80Melanotekite
    Pb
     
    2
    Fe
    3+
    2
    [O
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.82Tilleyite
    Ca
     
    5
    [(CO
     
    3
    )
     
    2
    |Si
     
    2
    O
     
    7
    ]
    9.BE.85Killalaite
    Ca
     
    3
    [Si
     
    2
    O
     
    7
    ] · 0.5H
     
    2
    O
    9.BE.87Stavelotite-(La)
    (La,Nd,Ca)
     
    3
    Mn
    2+
    3
    Cu(Mn
    3+
     
    ,Fe
    3+
     
    ,Mn
    4+
     
    )
     
    26
    [O
     
    5
    |Si
     
    2
    O
     
    7
    ]
     
    6
    9.BE.90Biraite-(Ce)
    Ce
     
    2
    Fe
    2+
     
    [CO
     
    3
    |Si
     
    2
    O
     
    7
    ]
    Related Minerals - Hey's Index Grouping:
    17.8.1Epistolite
    Na
     
    2
    (Nb,Ti)
     
    2
    [O
     
    2
    |Si
     
    2
    O
     
    7
    ] · nH
     
    2
    O
    17.8.3Perraultite
    (Na,Ca)(Ba,K)(Mn,Fe)
     
    4
    (Ti,Nb)
     
    2
    Si
     
    4
    O
     
    16
    (OH,F,O)
     
    3
    17.8.4Niocalite
    (Ca,Nb)
     
    4
    [(O,OH,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    17.8.5Mongolite
    Ca
     
    4
    Nb
     
    6
    Si
     
    5
    O
     
    24
    (OH)
     
    10
    ·nH
     
    2
    O
    17.8.6Fersmanite
    (Ca,Na)
     
    4
    (Ti,Nb)
     
    2
    Si
     
    2
    O
     
    11
    (F,OH)
     
    2
    17.8.7Nacareniobsite-(Ce)
    Na
     
    3
    Ca
     
    3
    (Ce,La,Nd)Nb[F
     
    3
    |O|(Si
     
    2
    O
     
    7
    )
     
    2
    ]
    17.8.8Nenadkevichite
    (Na,Ca)(Nb,Ti)Si
     
    2
    O
     
    7
    ·2H
     
    2
    O
    17.8.9Natrokomarovite
    (Na,Ca,H)
     
    2
    Nb
     
    2
    Si
     
    2
    O
     
    10
    (OH,F)
     
    2
    ·H
     
    2
    O
    17.8.10Wöhlerite
    NaCa
     
    2
    (Zr,Nb)[(O,OH,F)
     
    2
    |Si
     
    2
    O
     
    7
    ]
    17.8.11Belkovite
    Ba
     
    3
    (Nb,Ti)
     
    6
    [O
     
    6
    |Si
     
    2
    O
     
    7
    ]
     
    2
    17.8.12Baotite
    Ba
     
    4
    (Ti,Nb)
     
    8
    Si
     
    4
    O
     
    28
    Cl
    17.8.13Shcherbakovite
    Na(K,Ba)
     
    2
    (Ti,Nb)
     
    2
    [O|Si
     
    2
    O
     
    6
    ]
     
    2
    17.8.14Ilímaussite-(Ce)
    (Na,K)
     
    7-8
    (Ba,K)
     
    10
    Ce
     
    5
    (Nb,Ti)
     
    6
    [O
     
    6
    |Si
     
    9
    O
     
    18
    (O,OH)
     
    24
    |(Si
     
    6
    O
     
    18
    )
     
    2
    ]
    17.8.15Komarovite
    (Ca,Mn)Nb
     
    2
    [O
     
    3
    |Si
     
    2
    O
     
    7
    ] · 3.5H
     
    2
    O
    17.8.16Manganbelyankinite
    (Mn,Ca)(Ti,Nb)
     
    5
    O
     
    12
    ·9H
     
    2
    O
    17.8.17Niobophyllite
    (K,Na)
     
    3
    (Fe,Mn)
     
    6
    (Nb,Ti)
     
    2
    Si
     
    8
    (O,OH,F)
     
    31
    17.8.18Caesium-Kupletskite

    Other Names for Murmanite

    Synonyms:
    Mourmanite
    German names:
    MourmanitMurmanit
    Russian names:
    Мурманит
    Spanish names:
    MourmanitaMurmanita

    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 Murmanite

    Reference List:American Mineralogist (1963): 48: 1413.

    Doklady Akademii Nauk SSSR, seriya A: 731-736.

    Mineralogicheskii Zhurnal, Kiev: 11(5): 19-27.

    Neues Jahrbuch für Mineralogie, Abhandlungen (1986): 155: 67.

    Internet Links for Murmanite

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  • Raman and XRD data at RRUFF project
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    Localities for Murmanite

    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.
    Brazil
     
    • South Region
      • Santa Catarina
    Canada
     
    • Newfoundland and Labrador
    Greenland
     
    • Kitaa (West Greenland) Province
      • Narsaq
        • Ilimaussaq complex
    Collection of NHM, Vienna
    B. Otter collection
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    Men'shikov, Y.P., et al (2006), American Mineralogist: 91: 922-928.
    Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    No reference listed
          • Lovozero Massif
            • Alluaiv Mt
              • Umbozero Mine
    [World of Stones 95:5-6, p64]
            • Karnasurt Mt
              • Second Eastern Stream
    [World of Stones 95:5-6, p64]
            • Tyul'bnyunuai River Valley
    Mineral and/or Locality
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    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.