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Rameauite

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Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
© 2008, J. Weissman

Show Rameauite Photos (2)
Formula:
K
 
2
Ca(UO
 
2
)
 
6
(OH)
 
16
 · H
 
2
O
System:MonoclinicColour:Orange
Name:Named after Jacques Rameau, French prospector who discovered the deposit where the mineral was found.
This page provides mineralogical data about Rameauite.

Classification of Rameauite

IMA status:Approved 1971
Strunz 8th edition ID:4/H.02-20
Nickel-Strunz 10th (pending) edition ID:4.GB.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
Dana 8th edition ID:5.5.2.1

5 : OXIDES CONTAINING URANIUM OR THORIUM
5 : AX3O10·xH2O
Hey's CIM Ref.:7.16.12

7 : Oxides and Hydroxides
16 : Oxides of U
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Type Occurrence of Rameauite

Type Locality:Margnac Mine, Compreignac, Haute-Vienne, Limousin, France
Year of Discovery:1972

Physical Properties of Rameauite

Colour:Orange
Cleavage:Distinct/Good

Crystallography of Rameauite

Crystal System:Monoclinic
Cell Parameters:a = 13.97Å, b = 14.26Å, c = 14.22Å
β = 121.02°
Ratio:a:b:c = 0.98 : 1 : 0.997
Unit Cell Volume:V 2,427.67 ų (Calculated from Unit Cell)

Optical Data of Rameauite

Type:Biaxial
Dispersion:relatively weak

Chemical Properties of Rameauite

Formula:
K
 
2
Ca(UO
 
2
)
 
6
(OH)
 
16
 · H
 
2
O
Essential elements:Ca, H, K, O, U
All elements listed in formula:Ca, H, K, O, U

Relationship of Rameauite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.GB.05Agrinierite
K
 
2
(Ca,Sr)(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 5H
 
2
O
4.GB.05Compreignacite
K
 
2
(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 7H
 
2
O
4.GB.10Becquerelite
Ca(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 8H
 
2
O
4.GB.10Billietite
Ba(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 4-8H
 
2
O
4.GB.10Protasite
Ba(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
4.GB.15Richetite
PbU
 
4
O
 
13
·4H
 
2
O
4.GB.20Bauranoite
Ba(UO
 
2
)
 
2
(OH)
 
6
 · 1-2H
 
2
O
4.GB.20Calciouranoite
(Ca,Ba,Pb)U
 
2
O
 
7
·5H
 
2
O
4.GB.20Metacalciouranoite
(Ca,Ba,Pb,K
 
2
)U
 
2
O
 
7
·2H
 
2
O
4.GB.25Fourmarierite
PbU
 
4
O
 
13
·4H
 
2
O
4.GB.30Wölsendorfite
(Pb,Ca)U
 
2
O
 
7
·2H
 
2
O
4.GB.35Masuyite
Pb(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
4.GB.40Metavandendriesscheite
PbU
 
7
O
 
22
·nH
 
2
O n < 12
4.GB.40Vandendriesscheite
PbU
 
7
O
 
22
·12H
 
2
O
4.GB.45Vandenbrandeite
Cu(UO
 
2
)(OH)
 
4
4.GB.50Sayrite
Pb
 
2
(UO
 
2
)
 
5
O
 
6
(OH)
 
2
·4H
 
2
O
4.GB.55Curite
Pb
 
3+x
(H
 
2
O)
 
2
[(UO
 
2
)
 
4
O
 
4+x
(OH)
 
3-x
]
 
2
4.GB.60Iriginite
UO
 
2
Mo
 
2
O
 
7
·3H
 
2
O
4.GB.65Uranosphaerite
Bi(UO
 
2
)O
 
2
(OH)
4.GB.70Holfertite
Ca
 
x
U
6+
2-x
Ti(O
 
8-x
OH
 
4x
) · 3H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
7.16.1Uraninite
UO
 
2
7.16.2Schoepite
(UO
 
2
)
 
8
O
 
2
(OH)
 
12
 · 12H
 
2
O
7.16.3Paraschoepite
UO
 
3
 · 2H
 
2
O
7.16.4Metaschoepite
UO
 
3
 · 1-2H
 
2
O
7.16.5Metastudtite
UO
 
4
 · 2H
 
2
O
7.16.6Studtite
[(UO
 
2
)(O
 
2
)(H
 
2
O)
 
2
]·H
 
2
O
7.16.7Ianthinite
U
4+
 
(UO
 
2
)
 
5
O
 
7
 · 10H
 
2
O
7.16.8Compreignacite
K
 
2
(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 7H
 
2
O
7.16.9Vandenbrandeite
Cu(UO
 
2
)(OH)
 
4
7.16.10Roubaultite
Cu
 
2
(UO
 
2
)
 
3
(OH)
 
10
 · 5H
 
2
O
7.16.11Becquerelite
Ca(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 8H
 
2
O
7.16.13Agrinierite
K
 
2
(Ca,Sr)(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 5H
 
2
O
7.16.14Protasite
Ba(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
7.16.15Billietite
Ba(UO
 
2
)
 
6
O
 
4
(OH)
 
6
 · 4-8H
 
2
O
7.16.16Bauranoite
Ba(UO
 
2
)
 
2
(OH)
 
6
 · 1-2H
 
2
O
7.16.17Metacalciouranoite
(Ca,Ba,Pb,K
 
2
)U
 
2
O
 
7
·2H
 
2
O
7.16.18Calciouranoite
(Ca,Ba,Pb)U
 
2
O
 
7
·5H
 
2
O
7.16.19Orthobrannerite
U
4+
 
U
6+
 
Ti
 
4
O
 
12
(OH)
 
2
7.16.20Thorutite
(Th,U,Ca)Ti
 
2
(O,OH)
 
6
7.16.21Davidite-(La)
(La,Ce)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
7.16.22Davidite-(Ce)
(Ce,La)(Y,U,Fe)(Ti,Fe)
 
20
(O,OH)
 
38
7.16.23Brannerite
(U
4+
 
,Ca)(Ti,Fe
3+
 
)
 
2
O
 
6
7.16.24Fourmarierite
PbU
 
4
O
 
13
·4H
 
2
O
7.16.25Richetite
PbU
 
4
O
 
13
·4H
 
2
O
7.16.26Curite
Pb
 
3+x
(H
 
2
O)
 
2
[(UO
 
2
)
 
4
O
 
4+x
(OH)
 
3-x
]
 
2
7.16.27Masuyite
Pb(UO
 
2
)
 
3
O
 
3
(OH)
 
2
 · 3H
 
2
O
7.16.28Vandendriesscheite
PbU
 
7
O
 
22
·12H
 
2
O
7.16.29Metavandendriesscheite
PbU
 
7
O
 
22
·nH
 
2
O n < 12
7.16.30Sayrite
Pb
 
2
(UO
 
2
)
 
5
O
 
6
(OH)
 
2
·4H
 
2
O
7.16.31Wölsendorfite
(Pb,Ca)U
 
2
O
 
7
·2H
 
2
O
7.16.32Clarkeite
(Na,Ca,Pb)
 
2
U
 
2
(O,OH)
 
7
7.16.33Uranosphaerite
Bi(UO
 
2
)O
 
2
(OH)

Other Names for Rameauite

Synonyms:
IMA1971-045
Other Languages:
German:Rameauit
Spanish:Rameauita

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 Rameauite

Reference List:Mineralogical Magazine (1972): 38: 83.

American Mineralogist (1973): 58: 805-806.

Bulletin de la Société française de Minéralogie et de Cristallographie (1982): 105: 606.

Internet Links for Rameauite

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    Localities for Rameauite

    Hide Locality List
    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.
    (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.
    France
     
    • Limousin
      • Haute-Vienne
        • Compreignac
    		F. Cesbron, W.L. Brown, P. Bariand, J. Geffroy: Mineral. Mag. 38:781-789 (1972)
    USA
     
    • Arizona
      • Coconino Co.
        • Grand Canyon National Park
          • South Rim
            • Orphan District
              • Grand Canyon Village
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 351; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..
    • Nevada
      • Esmeralda Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. Current server date and time: 22nd Oct 2009 17:55:40