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Fransoletite

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André-Mathieu Fransolet
Formula:
Ca3Be2(PO4)2(HPO4)2 · 4H2O
Hardness:
3
Crystal System:
Monoclinic
Name:
Named in 1983 by D.R. Peacor, P.J. Dunn, W.L. Roberts, T.J. Campbell and D. Newbury after André-Mathieu Fransolet, born May 8, 1947, in Verviers, Liège province, Belgium, professor of mineralogy and crystallography at the University of Liège, and specialist in phosphates.
This page provides mineralogical data about Fransoletite.


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Classification of FransoletiteHide

Approved
Approval Year:
1982
8.CA.05

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
A : With small and large/medium cations
40.5.1.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
5 : AXO4·xH2O
19.3.6

19 : Phosphates
3 : Phosphates of Be and Mg

Physical Properties of FransoletiteHide

Hardness:

Optical Data of FransoletiteHide

Type:
Biaxial (+)
RI values:
nα = 1.560 nβ = 1.566 nγ = 1.586
2V:
Measured: 25° , Calculated: 58°
Max Birefringence:
δ = 0.026
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v moderate

Chemical Properties of FransoletiteHide

Formula:
Ca3Be2(PO4)2(HPO4)2 · 4H2O
IMA Formula:
Ca3Be2(PO4)2(PO3OH)2 · 4H2O

Crystallography of FransoletiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 7.35 Å, b = 15.07 Å, c = 7.05 Å
β = 96.41°
Ratio:
a:b:c = 0.488 : 1 : 0.468
Unit Cell V:
776.01 ų (Calculated from Unit Cell)

Type Occurrence of FransoletiteHide

Place of Conservation of Type Material:
Los Angeles County Museum of Natural History
National Museum of Natural History, Washington

Synonyms of FransoletiteHide

Other Language Names for FransoletiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tiptopite2 photos of Fransoletite associated with Tiptopite on mindat.org.
Roscherite1 photo of Fransoletite associated with Roscherite on mindat.org.
Robertsite1 photo of Fransoletite associated with Robertsite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CA.ApexiteNaMg(PO4)·9H2OTric. 1 : P1
8.CA.05ParafransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OTric. 1 : P1
8.CA.10EhrleiteCa4Be3Zn2(PO4)6 · 9H2OTric. 1 : P1
8.CA.15FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
8.CA.20GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
8.CA.20MccrillisiteNaCs(Be,Li)Zr2(PO4)4 · 1-2H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.CA.20SelwyniteNaK(Be,Al)Zr2(PO4)4 · 2H2OTet.
8.CA.25PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
8.CA.30HopeiteZn3(PO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CA.30ArsenohopeiteZn3(AsO4)2 · 4H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.CA.35WarikahniteZn3(AsO4)2 · 2H2OTric.
8.CA.40PhosphophylliteZn2Fe(PO4)2 · 4H2OMon. 2/m : P21/b
8.CA.45ParascholziteCaZn2(PO4)2 · 2H2OMon.
8.CA.45ScholziteCaZn2(PO4)2 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
8.CA.50KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m
8.CA.55PushcharovskiteK0.6Cu18(AsO4)(HAsO4)10(H2AsO4)4(OH)9.6·18.6H2OTric.
8.CA.60ProsperiteCa2Zn4(AsO4)4•H2O · Mon.
8.CA.65GengenbachiteKFe3+3(HPO4)4(H2PO4)2 · 6H2OTrig. 3m : P3 1c
8.CA.70ParahopeiteZn3(PO4)2 · 4H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.3.1MoraesiteBe2(PO4)(OH) · 4H2OMon.
19.3.2BerylloniteNaBePO4Mon. 2/m : P21/b
19.3.3HurlbutiteCaBe2(PO4)2Mon.
19.3.4HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
19.3.9PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
19.3.11GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
19.3.12RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/m
19.3.13FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
19.3.14FarringtoniteMg3(PO4)2Mon. 2/m
19.3.15HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
19.3.16AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
19.3.17NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
19.3.19BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
19.3.21Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
19.3.22Dittmarite(NH4)Mg(PO4) · H2OOrth.
19.3.23Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
19.3.24Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1

Other InformationHide

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 FransoletiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Peacor, D.R., Dunn, P.J., Roberts, W.L., Campbell, T.J., Newbury, D. (1983) Fransoletite, a new calcium beryllium phosphate from the Tip Top Pegmatite, Custer, South Dakota. Bulletin de Minéralogie: 106: 499-503.
Dunn, P.J., Chao, G.Y., Fleischer, M., Ferraiolo, J.A., Langley, R.H., Pabst, A., Zilczer, J.A. (1985) New mineral names. American Mineralogist: 70: 214-221.
Kampf, A.R. (1992) Beryllophosphate chains in the structure of fransoletite, parafransoletite, and ehrleite and some general comments on berllophosphate linkages. American Mineralogist: 77: 848-856.

Internet Links for FransoletiteHide

Localities for FransoletiteHide

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.
USA (TL)
 
  • South Dakota
    • Custer Co.
      • Custer District
        • Fourmile
Rocks & Minerals: 60: 117.
Mineral and/or Locality  
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