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Agrinierite

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Formula:
K2(Ca,Sr)(UO2)3O3(OH)2·5H2O
System:
Orthorhombic
Colour:
Orange
Name:
Named in 1972 by Fabien P. Cesbron, W. L. Brown, Pierre Bariand, and Jacques Geffroy in honor of Henri Agrinier [1928-1971], an engineer in the Mineralogy Laboratory of the French Atomic Energy Commission, Paris, France.
This page provides mineralogical data about Agrinierite.

Classification of Agrinierite

Approved 1971
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
5.5.1.1

5 : OXIDES CONTAINING URANIUM OR THORIUM
5 : AX3O10·xH2O
7.16.13

7 : Oxides and Hydroxides
16 : Oxides of U
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First Recorded Occurrence of Agrinierite

Place of Conservation of First Recorded Material:
University of Pierre and Marie Curie, Paris; National School of Mines, Paris, France; National Museum of Natural History, Washington, D.C., USA, 137454.
Geological Setting of First Recorded Material:
oxidation zone of a uranium deposit
Associated Minerals at First Recorded Locality:

Physical Properties of Agrinierite

Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Orange
Cleavage:
Distinct/Good
on {001}
Density:
5.7 g/cm3 (Measured)    5.55 g/cm3 (Calculated)

Crystallography of Agrinierite

Crystal System:
Orthorhombic
Cell Parameters:
a = 14.04Å, b = 24.07Å, c = 14.13Å
Ratio:
a:b:c = 0.583 : 1 : 0.587
Unit Cell Volume:
V 4,775.13 ų (Calculated from Unit Cell)
Z:
16
Morphology:
Crystals tabular on {001}, pseudohexagonal in section
Twinning:
Sector twins with composition plane {110}
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.023 (s)
3.128 (vvs)
3.153 (vs)
3.485 (vs)
3.516 (s)
6.05 (ms)
7.08 (vvs)
Comments:
Sample from the type locality

Optical Data of Agrinierite

Type:
Biaxial (-)
Dispersion:
relatively weak

Chemical Properties of Agrinierite

Formula:
K2(Ca,Sr)(UO2)3O3(OH)2·5H2O
Essential elements:
All elements listed in formula:
Analytical Data:
Sample from Margnac Mine, France
Analytical results by electron microprobe, water by thermogravimetry (TGA)
Empirical formula based on three uranium and ten oxygen atoms per formula unit
UO3 (85.15)
CaO (2.20)
SrO (2.05)
K2O (3.35)
H2O (7.45)

sum 100.20 wt.-%
Empirical Formula:
(Ca0.40K0.36Sr0.20)Σ=0.96U3.00O10 · 4.17H2O

Relationship of Agrinierite to other Species

4.GB.05CompreignaciteK2(UO2)6O4(OH)6 · 7H2O
4.GB.05RameauiteK2Ca(UO2)6(OH)16 · H2O
4.GB.10BecquereliteCa(UO2)6O4(OH)6 · 8H2O
4.GB.10BillietiteBa(UO2)6O4(OH)6 · 4-8H2O
4.GB.10ProtasiteBa(UO2)3O3(OH)2 · 3H2O
4.GB.15RichetitePb(UO2)4O5 · 4H2O
4.GB.20BauranoiteBa(UO2)2(OH)6 · 1-2H2O
4.GB.20Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
4.GB.20Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
4.GB.25FourmarieritePb(UO2)4O3(OH)4 · 4H2O
4.GB.30Wölsendorfite(Pb,Ca)U2O7 · 2H2O
4.GB.35MasuyitePb(UO2)3O3(OH)2 · 3H2O
4.GB.40MetavandendriesscheitePbU7O22 · nH2O n < 12
4.GB.40VandendriesscheitePbU7O22 · 12H2O
4.GB.45VandenbrandeiteCu(UO2)(OH)4
4.GB.50SayritePb2(UO2)5O6(OH)2 · 4H2O
4.GB.55CuritePb3(UO2)8O8(OH)6 · 3H2O
4.GB.60Iriginite(UO2)Mo2O7 · 3H2O
4.GB.65UranosphaeriteBi(UO2)O2(OH)
4.GB.70HolfertiteCaxU6+2-xTi(O8-xOH4x) · 3H2O
7.16.1UraniniteUO2
7.16.2Schoepite(UO2)8O2(OH)12 · 12H2O
7.16.3ParaschoepiteUO3 · 2H2O
7.16.4MetaschoepiteUO3 · 1-2H2O
7.16.5MetastudtiteUO4 · 2H2O
7.16.6Studtite[(UO2)(O2)(H2O)2] · H2O
7.16.7IanthiniteU4+(UO2)5O7 · 10H2O
7.16.8CompreignaciteK2(UO2)6O4(OH)6 · 7H2O
7.16.9VandenbrandeiteCu(UO2)(OH)4
7.16.10RoubaultiteCu2(UO2)3(OH)10 · 5H2O
7.16.11BecquereliteCa(UO2)6O4(OH)6 · 8H2O
7.16.12RameauiteK2Ca(UO2)6(OH)16 · H2O
7.16.14ProtasiteBa(UO2)3O3(OH)2 · 3H2O
7.16.15BillietiteBa(UO2)6O4(OH)6 · 4-8H2O
7.16.16BauranoiteBa(UO2)2(OH)6 · 1-2H2O
7.16.17Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
7.16.18Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
7.16.19OrthobranneriteU4+U6+Ti4O12(OH)2
7.16.20Thorutite(Th,U,Ca)Ti2(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(U4+,REE,Th,Ca)(Ti,Fe3+,Nb)2(O,OH)6
7.16.24FourmarieritePb(UO2)4O3(OH)4 · 4H2O
7.16.25RichetitePb(UO2)4O5 · 4H2O
7.16.26CuritePb3(UO2)8O8(OH)6 · 3H2O
7.16.27MasuyitePb(UO2)3O3(OH)2 · 3H2O
7.16.28VandendriesscheitePbU7O22 · 12H2O
7.16.29MetavandendriesscheitePbU7O22 · nH2O n < 12
7.16.30SayritePb2(UO2)5O6(OH)2 · 4H2O
7.16.31Wölsendorfite(Pb,Ca)U2O7 · 2H2O
7.16.32Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2O
7.16.33UranosphaeriteBi(UO2)O2(OH)

Other Names for Agrinierite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Agrinierite

Reference List:
Cesbron, F., Brown, W. L., Bariand, P. and Geffroy, J. (1972): Rameauite and Agrinierite, two new hydrated complex uranyl oxides from Margnac, France. Mineralogical Magazine 38, 781-789. - American Mineralogist (1973) 58, 805 (abstract).

Cahill, C. L. and Burns, P. C. (2000): The structure of agrinierite, a Sr containing uranyl oxide hydrate mineral. American Mineralogist 85, 1294-1297.

Anthony, J. W., Bideaux, R. A., Bladh, K. W. and Nichols, M. C. (1997): Handbook of Mineralogy, Volume 3: Halides, Hydroxides, Oxides. Mineral Data Publishing (Tucson, AZ), 6.

Burns, P. C. (2005): U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist 43, 1839-1894.

Internet Links for Agrinierite

Localities for Agrinierite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
Min.Mag.(1972) 38, 781-789
Mineral and/or Locality  
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