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Meta-autunite

Big Photo

Les Oudots Quarry, Issy-l'Evêque, Saône-et-Loire, Burgundy, France
© Peter Haas

Show Meta-autunite Photos (50)
Formula:
Ca(UO
 
2
)
 
2
[PO
 
4
]
 
2
· 6-8H
 
2
O
System:TetragonalColour:greenish yellow, lemon ...
Hardness:2 - 2½


Meta-autunite Group.

Classification of Meta-autunite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/E.02-90
Nickel-Strunz 10th (pending) edition ID:8.EB.10

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
Dana 8th edition ID:40.2a.1.2

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:19.11.14

19 : Phosphates
11 : Phosphates of U
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Type Occurrence of Meta-autunite

Type Locality:Daybreak Mine (Dahl lease), Mount Kit Carson, Spokane Co., Washington, USA
Year of Discovery:1904

Physical Properties of Meta-autunite

Lustre:Pearly
Colour:greenish yellow, lemon yellow
Streak:pale yellow
Hardness (Mohs):2 - 2½
Cleavage:Perfect

Crystallography of Meta-autunite

Crystal System:Tetragonal
Cell Parameters:a = 6.97Å, c = 8.47Å
Ratio:a:c = 1 : 1.215
Unit Cell Volume:V 411.48 ų (Calculated from Unit Cell)

Optical Data of Meta-autunite

Type:Uniaxial (-)
RI values: nω = 1.607 nε = 1.584
Maximum Birefringence:δ = 0.023

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Meta-autunite

Formula:
Ca(UO
 
2
)
 
2
[PO
 
4
]
 
2
· 6-8H
 
2
O
Essential elements:Ca, H, O, P, U
All elements listed in formula:Ca, H, O, P, U
Common Impurities:Ba,Mg

Relationship of Meta-autunite to other Species

Member of Group:
Meta-autunite Group:
A(UO
 
2
)
 
2
(XO
 
4
)
 
2
·nH
 
2
O (n = 6, 7 or 8)
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-I
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.05UM1997-18-AsO:HNiU
Ni(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·6-8H
 
2
O
8.EB.05Metarauchite
Ni(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·8H
 
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.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.15Uramarsite
(NH
 
4
,H
 
3
O)
 
2
(UO
 
2
)
 
2
[(AsO
 
4
,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.25Uranospathite
Al
 
1-x
[]
 
x
)[(UO
 
2
)(PO
 
4
)]
 
2
(H
 
2
O)
 
20+3x
F
 
1-3x
, (0 < x < 0.33)
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
8.EB.55Sabugalite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
·16H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.11.1Lermontovite
UPO
 
4
·OH·H
 
2
O
19.11.2Metavanmeersscheite
U
4+
 
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 2H
 
2
O
19.11.3Vanmeersscheite
U
4+
 
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 4H
 
2
O
19.11.4Chernikovite
(H
 
3
O)
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
19.11.5Vyacheslavite
UPO
 
4
(OH)·nH
 
2
O
19.11.6Metanatroautunite
NaUO
 
2
PO
 
4
·4H
 
2
O
19.11.7Yingjiangite
K
 
2
Ca(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
6
 · 6H
 
2
O
19.11.8Meta-ankoleite
K
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
19.11.9Uramphite
(NH
 
4
)
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
19.11.10Torbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
·12H
 
2
O
19.11.11Metatorbernite
Cu(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
19.11.12Saléeite
Mg(UO
 
2
)
 
2
(PO
 
4
)
 
2
·10H
 
2
O
19.11.13Ningyoite
CaU(PO
 
4
)
 
2
·1-2H
 
2
O
19.11.15Autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
·11H
 
2
O
19.11.16Pseudo-autunite
(H
 
3
O)
 
4
Ca
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
4
 · 5H
 
2
O (?)
19.11.17Phurcalite
Ca
 
2
(UO
 
2
)
 
3
[O|PO
 
4
]
 
2
 · 7H
 
2
O
19.11.18Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
[O|PO
 
4
]
 
4
 · 8H
 
2
O
19.11.19Ulrichite
CaCu(UO
 
2
)[PO
 
4
]
 
2
 · 4H
 
2
O
19.11.20Bergenite
Ca
 
2
Ba
 
4
[(UO
 
2
)
 
3
O
 
2
(PO
 
4
)
 
2
]
 
3
·16H
 
2
O
19.11.21Metauranocircite
Ba(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 7H
 
2
O
19.11.22Uranocircite
Ba(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 10H
 
2
O
19.11.23Ranunculite
HAlUO
 
2
PO
 
4
(OH)
 
3
·4H
 
2
O
19.11.24Triangulite
Al
 
3
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH)
 
5
·5H
 
2
O
19.11.25Mundite
Al(UO
 
2
)
 
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 5.5H
 
2
O
19.11.26Upalite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH)·7H
 
2
O
19.11.27Furongite
Al
 
13
(UO
 
2
)
 
7
(PO
 
4
)
 
13
(OH)
 
14
 · 58H
 
2
O
19.11.28Threadgoldite
Al(UO
 
2
)
 
2
[OH|(PO
 
4
)
 
2
] · 8H
 
2
O
19.11.29Phuralumite
Al
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|(PO
 
4
)
 
3
] · 13H
 
2
O
19.11.30Moreauite
Al
 
3
UO
 
2
(PO
 
4
)
 
3
(OH)
 
2
·13H
 
2
O
19.11.31Sabugalite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
·16H
 
2
O
19.11.32Uranospathite
Al
 
1-x
[]
 
x
)[(UO
 
2
)(PO
 
4
)]
 
2
(H
 
2
O)
 
20+3x
F
 
1-3x
, (0 < x < 0.33)
19.11.33Althupite
AlTh(UO
 
2
)
 
7
[O
 
2
|(OH)
 
5
|(PO
 
4
)
 
4
] · 15H
 
2
O
19.11.34Françoisite-(Nd)
(Nd,Ce,Sm)(UO
 
2
)
 
3
[O|OH|(PO
 
4
)
 
2
] · 6H
 
2
O
19.11.35Kivuite
H
 
2
Th(UO
 
2
)
 
3
[O|OH|(PO
 
4
)
 
2
] · 6H
 
2
O (?)
19.11.36Parsonsite
Pb
 
2
(UO
 
2
)[PO
 
4
]
 
2
 · 2H
 
2
O
19.11.37Dewindtite
Pb(UO
 
2
)
 
3
[OH|PO
 
4
]
 
2
 · 3H
 
2
O
19.11.38Dumontite
Pb
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 3H
 
2
O
19.11.39Przhevalskite
Pb
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 3H
 
2
O
19.11.40Lehnerite
Mn
2+
 
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
19.11.41Bassetite
Fe
2+
 
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
19.11.42Vochtenite
(Fe
2+
 
,Mg)Fe
3+
 
(UO
 
2
)
 
4
[OH|(PO
 
4
)
 
4
] · 12-13H
 
2
O

Other Names for Meta-autunite

Other Languages:
German:Meta-Autunit
Russian:Метаотенит

Other Information

Health Warning:Contains uranium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest. Avoid prolonged exposure in proximity of the body. Store away from inhabited areas.

References for Meta-autunite

Reference List:Makarov, E.S. and Ivanov, V.I. (1960) The crystal structure of meta-autunite, Ca(UO2)2(PO4)2·6H2O. Doklady of the Academy of Sciences of the USSR: 132: 601-603.

American Mineralogist (1963): 48: 1389-1393.

American Mineralogist (1981): 66: 1068-1072.

Bulletin de la Société française de Minéralogie et de Cristallographie: 81: 4-10.

Doklady Akademii Nauk SSSR: 132: 601-603.

Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Meta-autunite

Search Engines:
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    • External Links:
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  • Look for Meta-autunite on Athena Mineralogy
  • Look for Meta-autunite on Wikipedia
  • Look for Meta-autunite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Meta-autunite in the Natural History Museum (London) online catalogue
  • Meta-autunite details from Handbook of Mineralogy (PDF)
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    Localities for Meta-autunite

    Show Locality List (304 Items)
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