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Phaunouxite

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About PhaunouxiteHide

Formula:
Ca3(AsO4)2 · 11H2O
Colour:
Colourless
Lustre:
Vitreous
Crystal System:
Triclinic
Name:
Named after Phaunoux, the French name for the Rauenthal valley (France), where the mineral was first found.
Often associated with the chemically nearly identical Rauenthalite.


Classification of PhaunouxiteHide

Approved
Approval Year:
1980
8.CJ.40

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
40.3.12.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
20.2.14

20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba

Physical Properties of PhaunouxiteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless

Optical Data of PhaunouxiteHide

Type:
Biaxial (+)
RI values:
nα = 1.532 nβ = 1.542 nγ = 1.556
2V:
Measured: 80° , Calculated: 82°
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
weak

Chemical Properties of PhaunouxiteHide

Formula:
Ca3(AsO4)2 · 11H2O

Crystallography of PhaunouxiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 12.563(7) Å, b = 12.181(6) Å, c = 6.205(4) Å
α = 88.94(3)°, β = 91.67(3)°, γ = 113.44(3)°
Ratio:
a:b:c = 1.031 : 1 : 0.509
Unit Cell V:
870.80 ų (Calculated from Unit Cell)
Comment:
Non-standard setting.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.49 (10)
6.23 (9)
5.42 (8)
3.276 (9)
2.963 (6)
2.810 (6)
2.443(7)

Type Occurrence of PhaunouxiteHide

Synonyms of PhaunouxiteHide

Other Language Names for PhaunouxiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Rauenthalite6 photos of Phaunouxite associated with Rauenthalite on mindat.org.
Guérinite4 photos of Phaunouxite associated with Guérinite on mindat.org.
Scorodite4 photos of Phaunouxite associated with Scorodite on mindat.org.
Pharmacolite2 photos of Phaunouxite associated with Pharmacolite on mindat.org.
Sainfeldite2 photos of Phaunouxite associated with Sainfeldite on mindat.org.
Picropharmacolite2 photos of Phaunouxite associated with Picropharmacolite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CJ.CaesiumpharmacosideriteCsFe4[(AsO4)3(OH)4]·4H2OIso. 4 3m : P4 3m
8.CJ.05StercoriteNa(NH4)HPO4 · 4H2OTric.
8.CJ.10Mundrabillaite(NH4)2Ca(HPO4)2 · H2OMon. m : Pm
8.CJ.10Swaknoite(NH4)2Ca(HPO4)2 · H2OOrth.
8.CJ.15NabaphiteNaBaPO4 · 9H2OIso.
8.CJ.15NastrophiteNa(Sr,Ba)PO4 · 9H2O
8.CJ.20HaidingeriteCaHAsO4 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
8.CJ.25VladimiriteCa4(AsO4)2(AsO3OH) · 4H2OMon. 2/m : P21/b
8.CJ.30FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CJ.35Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2OHex.
8.CJ.40RauenthaliteCa3(AsO4)2 · 10H2OTric. 1 : P1
8.CJ.45Brockite(Ca,Th,Ce)PO4 · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Grayite(Th,Pb,Ca)(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(Ce)Ce(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(La)La(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Rhabdophane-(Nd)Nd(PO4) · H2OHex. 6 2 2 : P62 2 2
8.CJ.45Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2OHex.
8.CJ.45Smirnovskite(Th,Ca)PO4 · nH2OHex. 6 2 2 : P62 2 2
8.CJ.50ArdealiteCa2(HPO4)(SO4) · 4H2OMon. m : Bb
8.CJ.50BrushiteCa(HPO4) · 2H2OMon. m : Bb
8.CJ.50Churchite-(Y)Y(PO4) · 2H2OMon. 2/m : B2/b
8.CJ.50PharmacoliteCa(HAsO4) · 2H2OMon. m
8.CJ.50Churchite-(Nd)Nd(PO4) · 2H2OMon.
8.CJ.55McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.
8.CJ.60DorfmaniteNa2HPO4 · 2H2OOrth.
8.CJ.65SincositeCa(VO)2(PO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P42/nnm
8.CJ.65BariosincositeBa(VO)2(PO4)2 · 4H2OTet.
8.CJ.70CatalanoiteNa2(HPO4) · 8H2OOrth. mmm (2/m 2/m 2/m) : Ibca
8.CJ.75GuériniteCa5(AsO4)2(HAsO4)2 · 9H2OMon. 2/m : P21/b
8.CJ.85NingyoiteCaU(PO4)2 · 1-2H2OOrth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.2.1BearsiteBe2(AsO4)(OH) · 4H2OMon.
20.2.2BrassiteMg(HAsO4) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
20.2.3RößleriteMg(HAsO4) · 7H2OMon. 2/m : B2/b
20.2.4HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.2.5WeiliteCa(HAsO4)Tric. 1 : P1
20.2.6JohnbaumiteCa5(AsO4)3OHHex. 6/m : P63/m
20.2.7HaidingeriteCaHAsO4 · H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
20.2.8PharmacoliteCa(HAsO4) · 2H2OMon. m
20.2.9SainfelditeCa5(AsO4)2(AsO3OH)2 · 4H2OMon. 2/m : B2/b
20.2.10VladimiriteCa4(AsO4)2(AsO3OH) · 4H2OMon. 2/m : P21/b
20.2.11GuériniteCa5(AsO4)2(HAsO4)2 · 9H2OMon. 2/m : P21/b
20.2.12FerrarisiteCa5(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
20.2.13RauenthaliteCa3(AsO4)2 · 10H2OTric. 1 : P1
20.2.15McneariteNaCa5(AsO4)(HAsO4)4 · 4H2OTric.
20.2.16BergslagiteCaBeAsO4(OH)Mon. 2/m : P21/b
20.2.17AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.2.18TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
20.2.19IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.
20.2.20CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
20.2.21PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2OTric. 1 : P1
20.2.22BariopharmacosideriteBa0.5Fe3+4(AsO4)3(OH)4 · 5H2OTet. 4 2m : P4 2m

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 PhaunouxiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bari, H., Catti, M., Ferraris, G., Ivaldi, G. & Permingeat, F. (1982): Phaunouxite Ca3(AsO4)*11H2O, a new mineral strictly associated with rauenthalite. Bull. Minéral. 105, 327-332. [Abs. in American Mineralogist (1983): 68: 850.]
Catti, M. & Ivaldi, G. (1983): On the topotactic dehydration Ca3(AsO4)2•11H2O (phaunouxite) —› Ca3(AsO4)2•10H2O (rauenthalite), and the structures of both minerals. Acta Crystallographica B39, 4-10.

Internet Links for PhaunouxiteHide

Localities for PhaunouxiteHide

ⓘ - 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.
Austria
 
  • Styria
    • Schladming
      • Schladminger Tauern
        • Obertalbach valley
Taucher, J. & Hollerer, C.E. (1994): Phaunouxit und Rauenthalit von der Co-Ni-Lagerstätte Zinkwand-Vöttern, Schladminger Tauern, Steiermark. Matrixx 3, 69-72.
Czech Republic
 
  • Karlovy Vary Region
    • Krušné Hory Mts (Erzgebirge)
Jakub Plasil
  • Plzeň Region
    • Planá u Mariánských Lázní (Plan)
http://www.mineralos.cz/lokality/plana/plana.htm
France
 
  • Grand Est
    • Haut-Rhin
      • Ste Marie-aux-Mines (Markirch)
P&T N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin).
          • Sankt Jakob vein
[MinRec 19:256]
P&T N°23-24, H. BARI 1982, Minéralogie des filons du Neuenberg à Sainte Marie aux Mines (Haut-Rhin).
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Schenkenzell
        • Wittichen
Carsten Slotta collection (XRD-analysed by Uwe Kolitsch)
      • Wolfach
        • Oberwolfach
          • Rankach valley
KOLITSCH, U. (1995): Phaunouxit, ein Neufund von der Grube Clara. - Erzgräber 9 (2), 77-80; BLAß, G. & GRAF, H. W. (1995): Namibit, ein Neufund aus dem Schwarzwald. - Mineralien-Welt 6 (6), 20-22; U. Kolitsch, J. Gröbner, G. Blaß and H.-W. Graf (2007): Neufunde aus der Grube Clara im mittleren Schwarzwald (III): Cerianit-(Ce), Dravit, Florencit-(La), Gilmarit, Olenit und Scotlandit. Lapis 32, 19-23, 70.
  • Hesse
    • Richelsdorf District
      • Bauhaus
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Nentershausen
        • Süß
          • Richelsdorf Smelter
S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
  • Lower Saxony
    • Harz
      • St Andreasberg District
        • St Andreasberg
No reference listed
  • Saxony
    • Erzgebirge
T. Witzke (1992) Mineralien-Welt 3(6), 16-18
Ireland
 
  • Co. Kerry
    • Killarney
S. MORETON, P. DAVIDSON, D. I. GREEN and G. RYBACK (1999) Unusual Supergene Minerals at Muckross Mine, Killarney, Co. Kerry. Irish Journal of Earth Sciences 17:19-24
Japan
 
  • Kyushu Region
    • Oita prefecture
      • Saiki City
        • Kiura mine (Shin-Kiura mine; Kiura emery mine)
Masayuki Ohnishi, Norimasa Shimobayashi, Shigetomo Kishi, Mitsuo Tanabe, Shoichi Kobayashi (2013) Talmessite from the Uriya deposit at the Kiura mining area, Oita Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 108, No. 2 (April), 116-120.
UK
 
  • England
    • Cumbria
      • Allerdale
        • Caldbeck
No reference listed
Mineral and/or Locality  
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