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Paravauxite

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About ParavauxiteHide

Formula:
Fe2+Al2(PO4)2(OH)2 · 8H2O
Colour:
Pale greenish white to colorless; colorless in transmitted light. also gray-white or Light brown.
Lustre:
Sub-Vitreous, Resinous, Waxy, Pearly
Hardness:
3
Specific Gravity:
2.36
Crystal System:
Triclinic
Name:
Named in 1922 by Samuel George Gordon from the Greek παρα for "near" and its chemical relationship to Vauxite, a lower hydrate.
Dimorph of:
Isostructural with:
The triclinic dimorph of Metavauxite.

A rare mineral in hydrothermal tin veins and in complex granitic pegmatites.


Classification of ParavauxiteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.DC.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
42.11.14.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
19.14.25

19 : Phosphates
14 : Phosphates of Fe and other metals

Physical Properties of ParavauxiteHide

Sub-Vitreous, Resinous, Waxy, Pearly
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavages
Colour:
Pale greenish white to colorless; colorless in transmitted light. also gray-white or Light brown.
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
on {010}, perfect.
Fracture:
Conchoidal
Density:
2.36 g/cm3 (Measured)    2.37 g/cm3 (Calculated)

Optical Data of ParavauxiteHide

Type:
Biaxial (+)
RI values:
nα = 1.552 - 1.554 nβ = 1.558 - 1.559 nγ = 1.572 - 1.573
2V:
Measured: 72° , Calculated: 74°
Birefringence:
0.020
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
weak to distinct
Optical Extinction:
X (61°,56°), Y (180°, 55°), Z -61°, 54°)
Pleochroism:
Non-pleochroic

Chemical Properties of ParavauxiteHide

Formula:
Fe2+Al2(PO4)2(OH)2 · 8H2O

Crystallography of ParavauxiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 5.233 Å, b = 10.541 Å, c = 6.962 Å
α = 106.9°, β = 110.8°, γ = 72.1°
Ratio:
a:b:c = 0.496 : 1 : 0.66
Unit Cell V:
334.43 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Short prismatic [001], thick tabular {010}. Numerous forms ay be exhibited. Forms subparallel to radial aggregates.

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
9.82 Å(100)
6.38 Å(90)
4.91 Å(40)
4.20 Å(90)
3.18 Å(80)
2.85 Å(60)
2.58 Å(50)
Comments:
Handbook of Mineralogy, v. 4, p. 441.

Geological EnvironmentHide

Geological Setting:
Hydrothermal tin veins and pegmatites

Type Occurrence of ParavauxiteHide

Place of Conservation of Type Material:
U.S. National Museum of Natural History, Washington, D.C., USA: #112735, #136012, #R5467.
Geological Setting of Type Material:
Hydrothermal tin veins
Associated Minerals at Type Locality:

Other Language Names for ParavauxiteHide

Relationship of Paravauxite to other SpeciesHide

Other Members of this group:
FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
KummeriteMn2+Fe3+Al(PO4)2(OH)2·8H2OTric. 1 : P1
LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric.
SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric.
UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric.

Common AssociatesHide

Associated Minerals Based on Photo Data:
569 photos of Paravauxite associated with VauxiteFe2+Al2(PO4)2(OH)2 · 6H2O
349 photos of Paravauxite associated with SigloiteFe3+Al2(PO4)2(OH)3 · 7H2O
306 photos of Paravauxite associated with ChildreniteFe2+Al(PO4)(OH)2 · H2O
163 photos of Paravauxite associated with MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2O
53 photos of Paravauxite associated with WavelliteAl3(PO4)2(OH,F)3 · 5H2O
42 photos of Paravauxite associated with QuartzSiO2
20 photos of Paravauxite associated with PyriteFeS2
18 photos of Paravauxite associated with VivianiteFe2+3(PO4)2 · 8H2O
18 photos of Paravauxite associated with FranckeiteFe2+(Pb,Sn2+)6Sn4+2Sb2S14
8 photos of Paravauxite associated with GreenockiteCdS

Related Minerals - Nickel-Strunz GroupingHide

8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon.
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon.
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon.
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UKI-2006-(PO:FeHZn)ZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
8.DC.20CoralloiteMn2+Mn3+2(AsO4)2(OH)2 · 4H2OTric. 1 : P1
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2OMon.
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25MetavivianiteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.27BerauniteFe2+Fe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric.
8.DC.30PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric.
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric.
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.32TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2OTric. 1 : P1
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2OOrth.
8.DC.40CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon.
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide

42.11.14.1VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
42.11.14.3SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric.
42.11.14.4GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
42.11.14.5MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.14.1CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2OTet. 4 2 2 : P41 21 2
19.14.2KidwelliteNaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33Mon. 2/m : P2/b
19.14.3Rosemaryite(Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3Mon. 2/m : P21/b
19.14.4Wyllieite(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3Mon. 2/m
19.14.5Ferrowyllieite(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3Mon. 2/m : P21/b
19.14.6NatrodufréniteNaFe2+Fe3+5(PO4)4(OH)6 · 2H2OMon.
19.14.7LeucophosphiteKFe3+2(PO4)2(OH) · 2H2OMon. 2/m : P21/b
19.14.8Spheniscidite(NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2OMon.
19.14.9BurangaiteNaFe2+Al5(PO4)4(OH)6 · 2H2OMon. 2/m : B2/b
19.14.10Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6Trig. 3m (3 2/m) : P3 1m
19.14.11UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric.
19.14.12Garyansellite(Mg,Fe)3(PO4)2(OH,O) · 1.5H2OOrth. mmm (2/m 2/m 2/m)
19.14.13ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2Orth. 2 2 2 : C2 2 21
19.14.14AnapaiteCa2Fe2+(PO4)2 · 4H2OTric. 1 : P1
19.14.15XanthoxeniteCa4Fe3+2(PO4)4(OH)2 · 3H2OTric. 1 : P1
19.14.16CalcioferriteCa2Fe3+2(PO4)3(OH) · 7H2OMon. 2/m : B2/b
19.14.17MitridatiteCa2Fe3+3(PO4)3O2 · 3H2OMon. 2/m : B2/b
19.14.18MélonjosephiteCaFe2+Fe3+(PO4)2(OH)Orth. mmm (2/m 2/m 2/m) : Pbam
19.14.19DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmedAmor.
19.14.20CollinsiteCa2Mg(PO4)2 · 2H2OTric. 1 : P1
19.14.21SegeleriteCa2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pcca
19.14.22KingsmountiteCa3MnFeAl4(PO4)6(OH)4·12H2OMon. 2 : B2
19.14.23VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
19.14.24MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
19.14.26SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric.
19.14.27CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
19.14.28KoninckiteFe3+PO4 · 3H2OTet.
19.14.29LazuliteMgAl2(PO4)2(OH)2Mon. 2/m : P21/b
19.14.30ScorzaliteFe2+Al2(PO4)2(OH)2Mon. 2/m : P21/b
19.14.31Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
19.14.32Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
19.14.33ZaïriteBiFe3+3(PO4)2(OH)6Trig. 3m (3 2/m) : R3m

Fluorescence of ParavauxiteHide

Not fluorescent in UV

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 ParavauxiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Gordon, Samuel G. (1922) Science: 56: 56.
American Mineralogist (1922): 7: 108.
Gordon (1923) Proceedings of the Academy of Sciences, Philadelphia: 75: 261.
Gordon (1944) Proceedings of the Academy of Sciences, Philadelphia: 96: 345.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 972-973.
Hurlbut, Cornelius S., Jr. and R. Honea (1962) Sigloite, a new mineral from Llallagua, Bolivia. American Mineralogist: 47: 1–8.
Baur, W. H. (1969) The crystal structure of paravauxite, Fe2+Al2(PO4)
2
(OH)2 (OH2)6•2H2O. Neues Jahrbuch für Mineralogie, Monatshefte (1969): 430-433.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2000) Handbook of Mineralogy, Volume IV. Arsenates, Phosphates, Vanadates. Mineral Data Publishing, Tucson, AZ, 680pp.: 441.

Internet Links for ParavauxiteHide

Localities for ParavauxiteHide

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.
Australia
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Minerals of Iron Monarch, Glyn L. Francis
Bolivia (TL)
 
  • Potosí
    • Rafael Bustillo
      • Llallagua
American Mineralogist (1922): 7: 107-108; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 938, 973; Hyrsl, J. & A. Petrov (2006): Famous Mineral Localities: Llallagua, Bolivia. Mineralogical Record. 37: 117-162
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
sample of Luigi Chiappino analysed by Dr. Tony Kampf, Curator of LAC Mineralogical Museum, USA
    • Galiléia
      • Sapucaia do Norte
Sergio Varvello collection (ID by Daniel Atencio)
France
 
  • Occitanie
    • Pyrénées-Orientales
Berbain,C., Riley, T., Favreau, G., (2012): Phosphates des pegmatites du massif des Albères (Pyrénées-Orientales). Le Cahier des Micromonteurs. 117, 121-172
        • Collioure (Cotlliure)
BERBAIN. C, RILEY. T, FAVREAU. G, (2012) Phosphates des pegmatites du massif des Albères. Ed Association Française de Microminéralogie
Germany
 
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab
        • Waidhaus
          • Hagendorf
http://www.berthold-weber.de/h_miner.htm; Grey, I. E., Macrae, C. M., Keck, E., & Birch, W. D. (2012). Aluminium-bearing strunzite derived from jahnsite at the Hagendorf-Süd pegmatite, Germany. Mineralogical Magazine, 76(5), 1165-1174.
N. Jb. Miner. Mh., 1, 1999, 40 - 48; Dill, H. G., Weber, B., Gerdes, A., & Melcher, F. (2008). The Fe-Mn phosphate apliteSilbergrube'near Waidhaus, Germany: epithermal phosphate mineralization in the Hagendorf-Pleystein pegmatite province. Mineralogical Magazine, 72(5), 1119-1144.
  • Saxony
    • Görlitz District
      • Neißeaue
Witzke, T. & Giesler, T. (2013): Seltene Phosphate und Vanadate von Emmerichswalde bei Görlitz/Sachsen. Mineralien-Welt 24 (2), 40-55
      • Niesky
        • Horscha
Witzke, T. & Giesler, T. (2007): Der Schieferabbau Pansberg bei Horscha in der Lausitz, Sachsen. Lapis 32 (7-8), 68-73; 86.
Greece
 
  • East Macedonia and Thrace
    • Kavala
      • Kavala
Andrew P. Fornadel, Paul G. Spry, Vasilios Melfos, Michael Vavelidis and Panagiotis Ch. Voudouris (2011): Is the Palea Kavala Bi–Te–Pb–Sb ± Au district, northeastern Greece, an intrusion-related system? Ore Geology Reviews, 39, 119-133.
Portugal
 
  • Guarda
    • Sabugal
      • Bendada
Schnorrer-Köhler (1991), Mineral Occurrences.
Spain
 
  • Galicia
    • Pontevedra
      • Gondomar
        • Vincios
          • Mt Galiñeiro
Calvo, M. (2015): Minerales y Minas de España. Vol. VII, Fosfatos, arseniatos y vanadatos. Escuela Técnica Superior de Ingenieros de Minas de Madrid - Fundación Gómez Pardo. 479 pp.
USA
 
  • New Hampshire
    • Cheshire Co.
      • Walpole
P. Cristofono, T. Mortimer, J.W. Nizamoff, A. Wilken, and R. Wilken (2011) The 38th Rochester Mineralogical Symposium, April 14-17, 2011, lecture abstracts, page 17-18.
    • Grafton Co.
      • Groton
Rocks & Min. 80:251
Nashua Mineralogical Society Disp. Cat., 1995.; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
NIZAMOFF, James W., SIMMONS, William B., and FALSTER, Alexander U. (2004) PHOSPHATE MINERALOGY AND PARAGENESIS OF THE PALERMO #2 PEGMATITE, NORTH GROTON, NEW HAMPSHIRE Geological Society of America Abstracts with Programs, Vol. 36, No. 5, p. 115
Journal of Pegmatology vol. 1, no. 1 ; Geological Society of America Abstracts with Programs, Vol. 36, No. 5, p. 115; NIZAMOFF, J. W. (2004, November). Phosphate mineralogy and paragenesis of the Palermo# 2 pegmatite, North Groton, New Hampshire. In 2004 Denver Annual Meeting.
  • North Carolina
    • Cleveland Co.
      • Kings Mountain Mining District
Confirmed, EDS, 2004; Rocks and Minerals, (1985) 60:76-82; Carolina Geological Society Field Trip Guidebook 1981, 39-48
    • Gaston Co.
      • Bessemer City
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