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Phaunouxite

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Big Photo

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
© Stephan Wolfsried

Show Phaunouxite Photos (9)



Formula:
Ca
 
3
(AsO
 
4
)
 
2
 · 11H
 
2
O
System:TriclinicColour:Colourless
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 Phaunouxite

IMA status:Approved 1980
Strunz 8th edition ID:7/C.24-80
Nickel-Strunz 10th (pending) edition ID:8.CJ.40

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

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
Hey's CIM Ref.:20.2.14

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

Type Locality:Gabe Gottes Mine (incl. Giftgrube), Ste Marie-aux-Mines (Markirch), Haut-Rhin, Alsace, France
Year of Discovery:1980

Physical Properties of Phaunouxite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless

Crystallography of Phaunouxite

Crystal System:Triclinic
Cell Parameters:a = 12.56Å, b = 12.18Å, c = 6.2Å
α = 88.94°, β = 91.67°, γ = 113.44°
Ratio:a:b:c = 1.031 : 1 : 0.509
Unit Cell Volume:V 869.82 ų (Calculated from Unit Cell)

Optical Data of Phaunouxite

Type:Biaxial (+)
RI values: nα = 1.532 nβ = 1.542 nγ = 1.556
2V:Measured: 80° , Calculated: 82°
Maximum Birefringence:δ = 0.024

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:weak

Chemical Properties of Phaunouxite

Formula:
Ca
 
3
(AsO
 
4
)
 
2
 · 11H
 
2
O
Essential elements:As, Ca, H, O
All elements listed in formula:As, Ca, H, O

Relationship of Phaunouxite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.CJ.05Stercorite
Na(NH
 
4
)HPO
 
4
 · 4H
 
2
O
8.CJ.10Mundrabillaite
(NH
 
4
)
 
2
Ca(HPO
 
4
)
 
2
 · H
 
2
O
8.CJ.10Swaknoite
(NH
 
4
)
 
2
Ca(HPO
 
4
)
 
2
 · H
 
2
O
8.CJ.15Nabaphite
NaBaPO
 
4
 · 9H
 
2
O
8.CJ.15Nastrophite
Na(Sr,Ba)PO
 
4
 · 9H
 
2
O
8.CJ.20Haidingerite
CaHAsO
 
4
 · H
 
2
O
8.CJ.25Vladimirite
Ca
 
4
(AsO
 
4
)
 
2
(AsO
 
3
OH) · 4H
 
2
O
8.CJ.30Ferrarisite
Ca
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9H
 
2
O
8.CJ.35Machatschkiite
(Ca,Na)
 
6
(AsO
 
4
)(HAsO
 
4
)
 
3
(PO
 
4
,SO
 
4
) · 15H
 
2
O
8.CJ.40Rauenthalite
Ca
 
3
(AsO
 
4
)
 
2
 · 10H
 
2
O
8.CJ.45Brockite
(Ca,Th,Ce)PO
 
4
 · H
 
2
O
8.CJ.45Grayite
(Th,Pb,Ca)(PO
 
4
) · H
 
2
O
8.CJ.45Rhabdophane-(Ce)
(Ce,La)(PO
 
4
) · H
 
2
O
8.CJ.45Rhabdophane-(La)
(La,Ce)(PO
 
4
) · H
 
2
O
8.CJ.45Rhabdophane-(Nd)
(Nd,Ce,La)(PO
 
4
) · H
 
2
O
8.CJ.45Tristramite
(Ca,U,Fe)(PO
 
4
,SO
 
4
) · 2H
 
2
O
8.CJ.45UM1997-20-AsO:HU
U
4+
 
(HAsO
 
4
)
 
2
 · 4H
 
2
O
8.CJ.45Smirnovskite
CaTh(PO
 
4
)
 
2
 · nH
 
2
O
8.CJ.50Ardealite
Ca
 
2
(HPO
 
4
)(SO
 
4
) · 4H
 
2
O
8.CJ.50Brushite
Ca(HPO
 
4
) · 2H
 
2
O
8.CJ.50Churchite-(Y)
Y(PO
 
4
) · 2H
 
2
O
8.CJ.50Pharmacolite
Ca(HAsO
 
4
) · 2H
 
2
O
8.CJ.50Churchite-(Nd)
Nd(PO
 
4
) · 2H
 
2
O
8.CJ.55Mcnearite
NaCa
 
5
(AsO
 
4
)(HAsO
 
4
)
 
4
 · 4H
 
2
O
8.CJ.60Dorfmanite
Na
 
2
HPO
 
4
 · 2H
 
2
O
8.CJ.65Sincosite
Ca(VO)
 
2
(PO
 
4
)
 
2
 · 5H
 
2
O
8.CJ.65Bariosincosite
Ba(VO)
 
2
(PO
 
4
)
 
2
 · 4H
 
2
O
8.CJ.70Catalanoite
Na
 
2
(HPO
 
4
) · 8H
 
2
O
8.CJ.75Guérinite
Ca
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9H
 
2
O
8.CJ.85Ningyoite
CaU(PO
 
4
)
 
2
 · 1-2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.2.1Bearsite
Be
 
2
(AsO
 
4
)(OH) · 4H
 
2
O
20.2.2Brassite
Mg(HAsO
 
4
) · 4H
 
2
O
20.2.3Rösslerite
Mg(HAsO
 
4
) · 7H
 
2
O
20.2.4Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
 · 8H
 
2
O
20.2.5Weilite
Ca(HAsO
 
4
)
20.2.6Johnbaumite
Ca
 
5
(AsO
 
4
)
 
3
OH
20.2.7Haidingerite
CaHAsO
 
4
 · H
 
2
O
20.2.8Pharmacolite
Ca(HAsO
 
4
) · 2H
 
2
O
20.2.9Sainfeldite
CaCa
 
2
Ca
 
2
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
20.2.10Vladimirite
Ca
 
4
(AsO
 
4
)
 
2
(AsO
 
3
OH) · 4H
 
2
O
20.2.11Guérinite
Ca
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9H
 
2
O
20.2.12Ferrarisite
Ca
 
5
(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 9H
 
2
O
20.2.13Rauenthalite
Ca
 
3
(AsO
 
4
)
 
2
 · 10H
 
2
O
20.2.15Mcnearite
NaCa
 
5
(AsO
 
4
)(HAsO
 
4
)
 
4
 · 4H
 
2
O
20.2.16Bergslagite
CaBeAsO
 
4
(OH)
20.2.17Adelite
CaMg(AsO
 
4
)(OH)
20.2.18Talmessite
Ca
 
2
Mg(AsO
 
4
)
 
2
 · 2H
 
2
O
20.2.19Irhtemite
Ca
 
4
Mg(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 4H
 
2
O
20.2.20Camgasite
CaMg(AsO
 
4
)(OH) · 5H
 
2
O
20.2.21Picropharmacolite
Ca
 
4
Mg(AsO
 
4
)
 
2
(HAsO
 
4
)
 
2
 · 11H
 
2
O
20.2.22Bariopharmacosiderite
Ba
 
0.5
Fe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 5H
 
2
O

Other Names for Phaunouxite

Synonyms:
IMA1980-062
Other Languages:
German:Phaunouxit
Russian:Фонуксит

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 Phaunouxite

Reference List:

- +
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.

American Mineralogist (1983): 68: 850.

Acta Crystallographica: B39: 4-10.

Internet Links for Phaunouxite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Phaunouxite details from Handbook of Mineralogy (PDF)
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    • Localities for Phaunouxite

    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.
    Hide Locality List
    (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.
    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
     
    • Bohemia (Böhmen; Boehmen)
      • Plzeň Region
        • Planá u Mariánských Lázní (Plan)
    		http://www.mineralos.cz/lokality/plana/plana.htm
    France
     
    • Alsace
      • Haut-Rhin
        • Ste Marie-aux-Mines (Markirch)
    		[MinRec 19:256]
    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
        • Süss
          • Richelsdorf Smelter
    		S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1992
    • Lower Saxony
      • Harz
        • St Andreasberg District
          • St Andreasberg
    		No reference listed
    • Saxony
      • Erzgebirge
        • Schlema-Hartenstein District
    		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
    UK
     
    • England
      • Cumbria
        • North and Western Region (Cumberland)
          • Caldbeck Fells
    		No reference listed
    Mineral and/or Locality
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