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Gaudefroyite

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About GaudefroyiteHide

09302510014946690034606.jpg
Christophe Gaudefroy
Formula:
Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
Hardness:
6
Crystal System:
Hexagonal
Name:
Named in 1964 by Georges Jouravsky and François Permingeat in honor of Christophe Gaudefroy [1878-1971], French ecclesiastic and mineralogist.
This page provides mineralogical data about Gaudefroyite.


Classification of GaudefroyiteHide

Approved
Approval Year:
1964
5/G.04-100
6.AB.60

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
27.1.2.1

27 : COMPOUND BORATES
1 : Miscellaneous
10.4.6

10 : Borates with other anions
4 : Borates with carbonate

Physical Properties of GaudefroyiteHide

Streak:
Brown
Hardness:

Optical Data of GaudefroyiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.805 - 1.810 nε = 2.015 - 2.020
Max Birefringence:
δ = 0.210
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of GaudefroyiteHide

Formula:
Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
IMA Formula:
Ca4Mn3+3(BO3)3(CO3)O3
Emperical Formula (of original material):
Ca4.3Mn2.8O3(BO3)3(CO3)

Crystallography of GaudefroyiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 10.6 Å, c = 5.9 Å
Ratio:
a:c = 1 : 0.557
Unit Cell V:
574.11 ų (Calculated from Unit Cell)

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006167GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0298
0006168GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006169GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006170GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006171GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006172GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006173GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006174GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006175GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006176GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006177GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006178GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006179GaudefroyiteAntao S M, Hassan I (2008) Gaudefroyite, Ca8Mn3+6[(BO3)6(CO3)2O6]: high-temperature crystal structure The Canadian Mineralogist 46 183-1932008Wessels mine, Kalahari manganese field, South Africa0293
0006635GaudefroyiteHoffmann C, Armbruster T, Kunz M (1997) Structure refinement of (001) disordered gaudefroyite Ca4Mn3[(BO3)3(CO3)O3]: Jahn-Teller-distortion in edge-sharing chains of MnO6 octahedra European Journal of Mineralogy 9 7-1919970293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of GaudefroyiteHide

Synonyms of GaudefroyiteHide

Other Language Names for GaudefroyiteHide

Simplified Chinese:碳硼锰钙石
Spanish:Gaudefroyita
Traditional Chinese:碳硼錳鈣石

Common AssociatesHide

Associated Minerals Based on Photo Data:
75 photos of Gaudefroyite associated with AndraditeCa3Fe3+2(SiO4)3
33 photos of Gaudefroyite associated with BaryteBaSO4
22 photos of Gaudefroyite associated with CalciteCaCO3
21 photos of Gaudefroyite associated with HausmanniteMn2+Mn3+2O4
15 photos of Gaudefroyite associated with HematiteFe2O3
15 photos of Gaudefroyite associated with EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
6 photos of Gaudefroyite associated with ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2O
5 photos of Gaudefroyite associated with OyeliteCa10Si8B2O29 · 12.5H2O
3 photos of Gaudefroyite associated with Garnet GroupX3Z2(SiO4)3
3 photos of Gaudefroyite associated with ManganiteMn3+O(OH)

Related Minerals - Nickel-Strunz GroupingHide

6.AB.05HambergiteBe2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pbca
6.AB.10BerboriteBe2(BO3)(OH,F) · H2OTrig.
6.AB.15JeremejeviteAl6(BO3)5(F,OH)3Hex. 6/m : P63/m
6.AB.20Warwickite(Mg,Ti,Fe,Cr,Al)2O(BO3)Orth.
6.AB.20YuanfuliiteMg(Fe3+,Al)O(BO3)Orth.
6.AB.25KarliteMg7(BO3)3(OH,Cl)5Orth.
6.AB.30Azoproite(Mg,Fe2+)2(Fe3+,Ti,Mg)(BO3)O2Orth.
6.AB.30BonaccorditeNi2Fe3+(BO3)O2Orth.
6.AB.30FredrikssoniteMg2(Mn3+,Fe3+)(BO3)O2Orth.
6.AB.30LudwigiteMg2Fe3+(BO3)O2Orth.
6.AB.30VonseniteFe2+2Fe3+(BO3)O2Orth.
6.AB.35Pinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Mon.
6.AB.40BlatteriteSb5+3(Mn3+,Fe3+)9(Mn2+,Mg)35(BO3)16O32Orth. mmm (2/m 2/m 2/m) : Pnnm
6.AB.40ChestermaniteMg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2Orth. mmm (2/m 2/m 2/m)
6.AB.40Orthopinakiolite(Mg,Mn2+)2Mn3+(BO3)O2Orth.
6.AB.40Takéuchiite(Mg,Mn2+)2(Mn3+,Fe3+)(BO3)O2Orth.
6.AB.45Hulsite(Fe2+,Mg)2(Fe3+,Sn)(BO3)O2Mon.
6.AB.45Magnesiohulsite(Mg,Fe2+)2(Fe3+,Sn,Mg)(BO3)O2Mon.
6.AB.45Aluminomagnesiohulsite(Mg,Fe2+)2(Al,Mg,Sn)(BO3)O2Mon. 2/m
6.AB.50FluoboriteMg3(BO3)(F,OH)3Hex.
6.AB.50HydroxylboriteMg3(BO3)(OH)3Hex. 6/m : P63/m
6.AB.55ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
6.AB.55WightmaniteMg5(BO3)O(OH)5 · 2H2OMon.
6.AB.65SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2ClIso. m3m (4/m 3 2/m) : Fd3m
6.AB.70HarkeriteCa12Mg4Al(BO3)3(SiO4)4(CO3)5 · H2OTrig. 3m (3 2/m) : R3m
6.AB.75Pertsevite-(F)Mg2(BO3)(F,OH)Orth. mm2 : Pna21
6.AB.75Pertsevite-(OH)Mg2(BO3)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
6.AB.80JacquesdietrichiteCu2(H2BO3)(OH)3Orth. mmm (2/m 2/m 2/m) : Pmna
6.AB.85PainiteCaZrAl9(BO3)O15Hex. 6/m : P63/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

10.4.1CanavesiteMg2(HBO3)(CO3) · 5H2OMon.
10.4.2CarboboriteCa2Mg[B(OH)4]2(CO3)2 · 4H2OMon.
10.4.3BorcariteCa4Mg(B4O6(OH)6)(CO3)2Tric.
10.4.4SakhaiteCa12Mg4(BO3)7(CO3)4(OH)2ClIso. m3m (4/m 3 2/m) : Fd3m
10.4.5Moydite-(Y)Y[B(OH)4](CO3)Orth. mmm (2/m 2/m 2/m) : Pbca

Other InformationHide

IR Spectrum:
Tachgagalt mine material [cm-1]: 1494s, 1219s, 1138, 1110, 937, 878w, 856, 795w, 764, 752w, 735sh, 724s, 663, 621s, 591s, 550sh, 470s, 408w
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 GaudefroyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogy (1965): 50: 806.
Soviet Physics – Crystallography: 20: 87-88.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.

Internet Links for GaudefroyiteHide

Localities for GaudefroyiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz District
      • Vordereifel
        • Ettringen
Schäfer, Ch. (2016): Einige bemerkenswerte Funde vom Bellerberg-Vulkan bei Mayen, Der Aufschluß, Vol. 67 (1) , pp. 5-15
Morocco (TL)
 
  • Drâa-Tafilalet Region
    • Zagora Province
      • Agdz Cercle
Bull.Soc.fr.Min.Crist. 87 (1964), 216
South Africa
 
  • Northern Cape
    • Kalahari manganese field
      • Black Rock
      • Hotazel
Von Bezing, K. L. et al. (1991) The Kalahari manganese field: an update. Mineralogical Record, 22(4), 279-302.; Beukes, N. J., Burger, A. M., & Gutzmer, J. (1995). Fault-controlled hydrothermal alteration of Palaeoproterozoic manganese ore in Wessels Mine, Kalahari manganese field. South African Journal of Geology, 98(4), 430-451.
      • Kuruman
        • N'Chwaning Mines
Von Bezing, K.L., Dixon, R.D., Pohl, D., Cavallo, G. (1991) The Kalahari (Afrique du Sud) manganese field: an update. The Mineralogical Record: 22(3): 279-302.
Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, PO Box 44283, Linden 2104, South Africa; Gutzmer, J. (1996). Genesis and alteration of the Kalahari and Postmasburg manganese deposits, Griqualand West, South Africa (Doctoral dissertation, Rand Afrikaans University); Cairncross, B., and Beukes, N. J., (2013) The Kalahari Manganese Field, the adventure continues. Struik Nature Publishers, Cape Town, South Africa
 
Mineral and/or Locality  
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