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Oxy-petscheckite

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Formula:
UFe
 
2/3
(Nb,Ta)
 
2
O
 
8


Occurs as an oxidation phase and intimately intergrown with hydroxy-petscheckite on metamict petscheckite from Antsakoa I pegmatite, Madagascar

Classification of Oxy-petscheckite

Hey's CIM Ref.:18.3.7

18 : Niobates and Tantalates
3 : Niobates and tantalates containing U but not rare earths
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Chemical Properties of Oxy-petscheckite

Formula:
UFe
 
2/3
(Nb,Ta)
 
2
O
 
8
Essential elements:Fe, Nb, O, U
All elements listed in formula:Fe, Nb, O, Ta, U

Relationship of Oxy-petscheckite to other Species

Related Minerals - Hey's Index Grouping:

- +
18.3.1Liandratite
U(Nb,Ta)
 
2
O
 
8
18.3.2Uranmicrolite (of Hogarth 1977)
18.3.3Betafite (of Hogarth 1977)
18.3.4Plumbobetafite (of Hogarth 1977)
18.3.5Petscheckite
UFe(Nb,Ta)
 
2
O
 
8
18.3.6Hydroxy-petscheckite
UFe
 
1/3
(Nb,Ta)
 
2
O
 
7
(O,OH)
18.3.8Ashanite
(Nb,Ta,U,Fe,Mn)
 
4
O
 
8

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 Oxy-petscheckite

Reference List:

- +
Mücke, A. & Strunz, H. (1978): Petscheckite and liandratite, two new pegmatite minerals from Madagascar. American Mineralogist 63: 941-946

Internet Links for Oxy-petscheckite

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    • Localities for Oxy-petscheckite

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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.
    Madagascar
     
    • Mahajanga (Majunga) Province
      • Betsiboka Region
        • Tsaratanàna District
          • Berere Pegmatite Field
    		Mücke, A. & Strunz, H. (1978): Petscheckite and liandratite, two new pegmatite minerals from Madagascar. American Mineralogist 63: 941-946
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