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Uramarsite

Formula:
(NH
 
4
,H
 
3
O)
 
2
(UO
 
2
)
 
2
[(AsO
 
4
,PO
 
4
)]
 
2
 · 6H
 
2
O
System:Tetragonal
Name:The name reflects its composition: uranyl (Ur), ammonium (am) and arsenate (ars) ions, consistent with the prior naming of its phosphate analogue Uramphite.


Meta-autunite Group. Arsenate analogue of Uramphite.

Classification of Uramarsite

IMA status:Approved 2005
Strunz 8th edition ID:7/E.02-165
Nickel-Strunz 10th (pending) edition ID:8.EB.15

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
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Type Occurrence of Uramarsite

Type Locality:Bota-Burum U deposit, Alakol' Lake, Chu-Ili Mts, Balqash (Balkhash; Karatas) Region, Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast'), Kazakhstan

Crystallography of Uramarsite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P4/mmm (P4/m 2/m 2/m)
Cell Parameters:a = 7.19Å, c = 9.15Å
Ratio:a:c = 1 : 1.273
Unit Cell Volume:V 473.02 ų (Calculated from Unit Cell)

Chemical Properties of Uramarsite

Formula:
(NH
 
4
,H
 
3
O)
 
2
(UO
 
2
)
 
2
[(AsO
 
4
,PO
 
4
)]
 
2
 · 6H
 
2
O
Essential elements:
All elements listed in formula:As, H, N, O, P, U

Relationship of Uramarsite to other Species

Related to:
  • Meta-autunite Group
    • Related Minerals - Nickel-Strunz Grouping):
    8.EB.05Autunite
    Ca(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·11H
     
    2
    		O
    8.EB.05Heinrichite
    Ba(UO
     
    2
    		)
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·10H
     
    2
    		O
    8.EB.05Kahlerite
    Fe(UO
     
    2
    		)
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    8.EB.05Nováčekite
    Mg(UO
     
    2
    		)
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    8.EB.05Saléeite
    Mg(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·10H
     
    2
    		O
    8.EB.05Torbernite
    Cu(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    8.EB.05Uranocircite
    Ba(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 10H
     
    2
    		O
    8.EB.05Uranospinite
    Ca(UO
     
    2
    		)(AsO
     
    4
    		)
     
    2
    		·10H
     
    2
    		O
    8.EB.05Xiangjiangite
    (Fe
    3+
     
    		,Al)(UO
     
    2
    		)
     
    4
    		[OH|(SO
     
    4
    		)
     
    2
    		|(PO
     
    4
    		)
     
    2
    		] · 22H
     
    2
    		O
    8.EB.05Zeunerite
    Cu(UO
     
    2
    		)
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    8.EB.10Bassetite
    Fe
    2+
     
    		(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Lehnerite
    Mn
    2+
     
    		(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Meta-autunite
    Ca(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		· 6-8H
     
    2
    		O
    8.EB.10Metasaléeite
    Mg(UO
     
    2
    		)(PO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    8.EB.10Metauranocircite
    Ba(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 7H
     
    2
    		O
    8.EB.10Metauranospinite
    Ca(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Metaheinrichite
    Ba(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Metakahlerite
    Fe
    2+
     
    		(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Metakirchheimerite
    Co(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Metanováčekite
    Mg(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 4-8H
     
    2
    		O
    8.EB.10Metatorbernite
    Cu(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Metazeunerite
    Cu(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    8.EB.10Przhevalskite
    Pb
     
    2
    		(UO
     
    2
    		)
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 3H
     
    2
    		O
    8.EB.10Meta-lodèvite
    8.EB.15Abernathyite
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    8.EB.15Chernikovite
    (H
     
    3
    		O)
     
    2
    		(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    8.EB.15Meta-ankoleite
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    8.EB.15Natrouranospinite
    (Na
     
    2
    		,Ca)(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    8.EB.15Trögerite
    (UO
     
    2
    		)
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O (?)
    8.EB.15Uramphite
    (NH
     
    4
    		)
     
    2
    		(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    8.EB.20Threadgoldite
    Al(UO
     
    2
    		)
     
    2
    		[OH|(PO
     
    4
    		)
     
    2
    		] · 8H
     
    2
    		O
    8.EB.20Chistyakovaite
    Al(UO
     
    2
    		)
     
    2
    		[(F,OH)|(AsO
     
    4
    		)
     
    2
    		] · 6.5H
     
    2
    		O
    8.EB.25Arsenuranospathite
    HAl(UO
     
    2
    		)
     
    4
    		(AsO
     
    4
    		)
     
    4
    		·40H
     
    2
    		O
    8.EB.25Sabugalite
    HAl(UO
     
    2
    		)
     
    4
    		(PO
     
    4
    		)
     
    4
    		·16H
     
    2
    		O
    8.EB.25Uranospathite
    HAl(UO
     
    2
    		)
     
    4
    		(PO
     
    4
    		)
     
    4
    		·40H
     
    2
    		O
    8.EB.30Vochtenite
    (Fe
    2+
     
    		,Mg)Fe
    3+
     
    		(UO
     
    2
    		)
     
    4
    		[OH|(PO
     
    4
    		)
     
    4
    		] · 12-13H
     
    2
    		O
    8.EB.35Coconinoite
    Fe
    3+
    2
    		Al
     
    2
    		(UO
     
    2
    		)
     
    2
    		[(OH)
     
    2
    		|SO
     
    4
    		|(PO
     
    4
    		)
     
    4
    		] · 20H
     
    2
    		O
    8.EB.40Ranunculite
    HAlUO
     
    2
    		PO
     
    4
    		(OH)
     
    3
    		·4H
     
    2
    		O
    8.EB.45Triangulite
    Al
     
    3
    		(UO
     
    2
    		)
     
    4
    		(PO
     
    4
    		)
     
    4
    		(OH)
     
    5
    		·5H
     
    2
    		O
    8.EB.50Furongite
    Al
     
    13
    		(UO
     
    2
    		)
     
    7
    		(PO
     
    4
    		)
     
    13
    		(OH)
     
    14
    		 · 58H
     
    2
    		O

    Other Names for Uramarsite

    Synonyms:
    IMA2005-043

    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 Uramarsite

    Reference List:Sidorenko, G.A., Chukanov, N.V., Chistyakova, N.I., Bebeshko, G.I., Zadov, A.E., Naumova, I.S. (2007): Uramarsite (NH4, H3O)2(UO2)2(AsO4,PO4)2•6H2O: A new mineral of the metaautunite group. Transactions (Doklady) of the Russian Academy of Sciences/Earth Science Section, 415A, 965-969

    Internet Links for Uramarsite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Uramarsite in the Natural History Museum (London) online catalogue
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    Localities for Uramarsite

    (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.
    Kazakhstan
     
    • Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast')
      • Balqash (Balkhash; Karatas) Region
        • Chu-Ili Mts
          • Alakol' Lake
    		Sidorenko, G.A., Chukanov, N.V., Chistyakova, N.I., Bebeshko, G.I., Zadov, A.E., Naumova, I.S. (2007): Uramarsite (NH4, H3O)2(UO2)2(AsO4,PO4)2•6H2O: A new mineral of the metaautunite group. Transactions (Doklady) of the Russian Academy of Sciences/Earth Science Section, 415A, 965-969.
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