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Crichtonite Group

Formula:
AB
 
21
O
 
38
or A{BC
 
2
D
 
6
E
 
12
}O
 
38


A group of about 13 complex metal titanates.
Identification of individual members of the group requires detailed analyses.

Classification of Crichtonite Group

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Chemical Properties of Crichtonite Group

Formula:
AB
 
21
O
 
38
or A{BC
 
2
D
 
6
E
 
12
}O
 
38

Relationship of Crichtonite Group to other Species

Minerals in Group:
Cleusonite:
(Pb,Sr)(U
4+
 
,U
6+
 
)(Fe
2+
 
,Zn)
 
2
(Ti,Fe
2+
 
,Fe
3+
 
)
 
18
(O,OH)
 
38
Crichtonite:
(Sr,La,Ce,Y)(Ti,Fe
3+
 
,Mn)
 
21
O
 
38
Davidite-(Ce):
(Ce,La)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
Davidite-(La):
(La,Ce)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
Dessauite-(Y):
(Sr,Pb)(Y,U)(Ti,Fe
3+
 
)
 
20
O
 
38
Gramaccioliite-(Y):
(Pb,Sr)(Y,Mn)Fe
3+
2
(Ti,Fe
3+
 
)
 
18
O
 
38
Landauite:
NaMnZn
 
2
(Ti,Fe)
 
6
Ti
 
12
O
 
38
Lindsleyite:
(Ba,Sr)(Ti,Zr,Fe,Cr)
 
21
O
 
38
Loveringite:
(Ca,Ce)(Ti,Fe,Cr,Mg)
 
21
O
 
38
Mathiasite:
K(Ti,Cr,Fe,Mg,Zr)
 
21
O
 
38
Romanite:
([],Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
Senaite:
Pb(Ti,Fe,Mn)
 
21
O
 
38
Unnamed (HBU UK-4):
NaFe
2+
 
Zn
 
2
(Ti,Fe
3+
 
,Nb)
 
6
Ti
 
12
O
 
38

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.

Internet Links for Crichtonite Group

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    Localities for Crichtonite Group

    (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.
    Austria
     
    • Styria
      • Semmering Massif
        • Mürzzuschlag
          • Semmering basis tunnel
    Postl, W., et al. (1997)
    • Tyrol
      • North Tyrol
        • Ziller valley
          • Zamser Grund (Zams valley)
    Folie K. Rocchetti I. (1999) Novità mineralogiche dal Passo di Vizze, Rivista Mineralogica Italiana, n° 4, 222-230
    Mineral and/or Locality
    Google
     
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