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Delvauxite

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Visé, Liège Province, Belgium
© JDehove

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Formula:
CaFe
 
4
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
8
 · 4-6H
 
2
O not confirmed ·
Colour:Yellowish brown, ...Hardness:2½
Name:For Belgian chemist, J.S.P.J. Delvaux de Fenffe (1782-1863), who first analyzed the material.


Grandfathered, but doubtful phase. A name applied to an ill-defined hydrous ferric phosphate. See also the related minerals Diadochite (amorphous) and Destinezite (triclinic).

Classification of Delvauxite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/D.55-10
Nickel-Strunz 10th (pending) edition ID:8.DM.35

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1
Dana 8th edition ID:42.6.6.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq·xH2O
Hey's CIM Ref.:19.14.19

19 : Phosphates
14 : Phosphates of Fe and other metals
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Type Occurrence of Delvauxite

Type Locality:Château de Berneau, Berneau, Dalhem, Liège, Liège Province, Belgium
Year of Discovery:1838

Physical Properties of Delvauxite

Lustre:Vitreous, Greasy
Diaphaneity (Transparency):Translucent
Colour:Yellowish brown, brownish black, reddish, chestnut-brown
Streak:Yellow
Hardness (Mohs):2½
Density (measured):1.85 g/cm3

Chemical Properties of Delvauxite

Formula:
CaFe
 
4
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
8
 · 4-6H
 
2
O not confirmed ·
Essential elements:Ca, Fe, H, O, P
All elements listed in formula:Ca, Fe, H, O, P, S

Relationship of Delvauxite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DM.05Morinite
Na
 
2
Ca
 
4
Al
 
4
(PO
 
4
)
 
4
(F,OH)
 
10
 · 3H
 
2
O
8.DM.05Esperanzaite
NaCa
 
2
Al
 
2
(AsO
 
4
)
 
2
(OH)F
 
4
 · 2H
 
2
O
8.DM.10Clinotyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
,SO
 
4
)
 
4
(OH,O)
 
10
 · 10H
 
2
O
8.DM.10Tyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
)
 
4
(CO
 
3
)(OH)
 
4
 · 11-12H
 
2
O
8.DM.15Betpakdalite-CaCa
{Mg(H
 
2
O)
 
6
}Ca
 
2
(H
 
2
O)
 
13
[Mo
6+
8
As
5+
2
Fe
3+
3
O
 
36
(OH)](H
 
2
O)
 
4
8.DM.15Melkovite
CaFe
3+
2
Mo
 
5
(PO
 
4
)
 
2
O
 
10
(OH)
 
12
 · 8H
 
2
O
8.DM.15Betpakdalite-NaCa
(Na
 
2
,Ca)Fe
 
2
(As
 
2
Mo
 
6
O
 
28
) · 15H
 
2
O
8.DM.20Phosphovanadylite
(Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]·12(H2O) x~0.66
8.DM.25Yukonite
Ca
 
3
Fe
3+
 
(AsO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
8.DM.30Uduminelite
Ca
 
3
Al
 
8
(PO
 
4
)
 
2
O
 
12
 · 2H
 
2
O
8.DM.40Santafeite
(Na,Ca,Sr)
 
12
(Mn
2+
 
,Fe
3+
 
,Al,Mg)
 
8
Mn
4+
8
(VO
 
4
)
 
16
(OH,O)
 
20
 · 8H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.14.1Cyrilovite
NaFe
3+
3
(PO
 
4
)
 
2
(OH)
 
2
 · 2H
 
2
O
19.14.2Kidwellite
NaFe
3+
9
(PO
 
4
)
 
6
(OH)
 
11
 · 3H
 
2
O
19.14.3Rosemaryite
(Na,Ca,Mn)(Mn,Fe
2+
 
)(Fe
3+
 
,Mg)Al(PO
 
4
)
 
3
19.14.4Wyllieite
(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO
 
4
)
 
3
19.14.5Ferrowyllieite
(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO
 
4
)
 
3
19.14.6Natrodufrénite
NaFe
2+
 
(Fe
3+
 
,Al)
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.7Leucophosphite
KFe
3+
2
(PO
 
4
)
 
2
(OH) · 2H
 
2
O
19.14.8Spheniscidite
(NH
 
4
,K)(Fe
3+
 
,Al)
 
2
(PO
 
4
)
 
2
(OH) · 2H
 
2
O
19.14.9Burangaite
NaFe
2+
 
Al
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.10Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
(PO
 
4
)(OH,O)
19.14.11Ushkovite
MgFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.14.12Garyansellite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
(OH,O) · 1.5H
 
2
O
19.14.13Thadeuite
Ca(Mg,Fe
2+
 
)
 
3
(PO
 
4
)
 
2
(OH,F)
 
2
19.14.14Anapaite
Ca
 
2
Fe
2+
 
(PO
 
4
)
 
2
 · 4H
 
2
O
19.14.15Xanthoxenite
Ca
 
4
Fe
3+
2
(PO
 
4
)
 
4
(OH)
 
2
 · 3H
 
2
O
19.14.16Calcioferrite
Ca
 
2
Fe
3+
2
(PO
 
4
)
 
3
(OH) · 7H
 
2
O
19.14.17Mitridatite
Ca
 
2
Fe
3+
3
(PO
 
4
)
 
3
O
 
2
 · 3H
 
2
O
19.14.18Mélonjosephite
CaFe
2+
 
Fe
3+
 
(PO
 
4
)
 
2
(OH)
19.14.20Collinsite
Ca
 
2
(Mg,Fe
2+
 
)(PO
 
4
)
 
2
 · 2H
 
2
O
19.14.21Segelerite
Ca
 
2
 Mg
 
2
 Fe
3+
2
(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.14.22Kingsmountite
Ca
 
4
(Fe
2+
 
,Mn
2+
 
)Al
 
4
(PO
 
4
)
 
6
(OH)
 
4
 · 12H
 
2
O
19.14.23Vauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 6H
 
2
O
19.14.24Metavauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.14.25Paravauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
19.14.26Sigloite
Fe
3+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
3
 · 7H
 
2
O
19.14.27Cacoxenite
Fe
3+
24
Al(PO
 
4
)
 
17
O
 
6
(OH)
 
12
 · 17H
 
2
O
19.14.28Koninckite
Fe
3+
 
PO
 
4
 · 3H
 
2
O
19.14.29Lazulite
(Mg,Fe
2+
 
)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
19.14.30Scorzalite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
19.14.31Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.32Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
19.14.33Zaïrite
Bi(Fe
3+
 
,Al)
 
3
(PO
 
4
)
 
2
(OH)
 
6

Other Names for Delvauxite

Synonyms:
Delvauxite (of Dumont)FouchéiteFoucheriteFouchériteFuchérite
Picite
Other Languages:
Catalan:Delvauxita
French:Delvauxene
German:Delvauxit
Delvauxit (of Hauer)
Italian:Delvauxite
Spanish:Delvauxita

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 Delvauxite

Reference List:

- +
Berthier (1836) Annales des mines: 9: 519 (as Foucherite).

Delvaux (1838) Académie royale des sciences de Belgique, Brussels, Bull.: 147.

Dumont (1839) L'Institut: 121 (as Delvauxene).

Haidinger (1845): 512.

von Hauer (1854) Jb. geol. Reichsanst., Wien: 5: 68.

Church (1864) Chemical News and Journal of Industrial Science, London: 10: 157.

Leymérie (1867): 2: 340 (as Fuchérite).

Nies (1877) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: 176 (as Picite).

Nies (1880) Ber. Oberhess. Ges.: 19: 112 (as Picite).

Streng (1881) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: I: 116 (as Picite).

Vrba (1889) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 15: 207.

Dittler (1909) Zs. Chem. Ind. Kolloide: 4: 300.

Lacroix, A. (1910) Minéralogie de la France et des ses colonies, Paris. 5 volumes: vol. 4: 535 (as Fouchérite).

Slavík (1918) Bull. int. ac. Bohême: 22: 32 (as Foucherite).

Ulrich (1922) Rozpr. České Ak.: 31, no. 10 (as Foucherite).

Veselý (1922) Rozpr. České Ak.: 31, no. 9.

Slavík and Ulrich (1926) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: I: 33.

Sidorenko (1944) Comptes rendus de l’académie des sciences de l’U.R.S.S.: 43: 264.

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.: 915.

American Mineralogist (1980): 65: 813.

Internet Links for Delvauxite

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    • Localities for Delvauxite

    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.
    Australia
     
    • South Australia
      • Mt Lofty Ranges
        • North Mt Lofty Ranges
          • Kapunda
    Austria
     
    • Lower Austria
      • Industrieviertel
        • Payerbach
    		Hackenberg 2003
      • Waldviertel
        • Mühldorf
          • Amstall
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
          • Wegscheid
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Styria
      • Koralpe Mts
        • Modriach
          • Herzogberg Mt.
    		H. Meixner: Der Karinthin 45/46:241-244 (1962)
      • Leoben
    		Josef Taucher,Mineralien des Bundeslandes Steiermark
    Belgium
     
    • Liège Province
      • Chaudfontaine
    		L. Dejonghe et al - Atlas des gisements plombo-zinciferes du synclinorium de Verviers - 1993 - 483 pages.
      • Liège
        • Dalhem
          • Berneau
    		http://www.mindat.org/mesg-7-231043.html
      • Verviers
        • Theux
    		L. Dejonghe et al - Atlas des gisements plombo-zinciferes du synclinorium de Verviers - 1993 - 483 pages.
    Bull. Acad. roy. Belg. (1838): 5, 296; 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: 935.
    1./ A.M. Fransolet, J Jedwab and R. Van Tassel, 1974, Inventaire minéralogique de Richelles, Belgique, Annales de la Société Géologique de Belgique, Tome 27, pp. 23-26.
    • Namur Province
      • Anhée
    		Collection Arliguie M
      • Namur
    		Les mineraux de Belgique and Geonieuws nr.2-1983
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Beroun (Beraun)
    		Vtělenský J. (1959): Mineralogie oolitických železných rud z některých ložisek Barrandienu. Geotechnica, sv. 26, Nakladatelství ČSAV Praha.
    Vtělenský J. (1959): Mineralogie oolitických železných rud z některých ložisek Barrandienu. Geotechnica, sv. 26, Nakladatelství ČSAV Praha.
    Vtělenský J. (1959): Mineralogie oolitických železných rud z některých ložisek Barrandienu. Geotechnica, sv. 26, Nakladatelství ČSAV Praha.
      • Pardubice Region
    		Prachař, I.: Současný stav výskytu nerostů ve Chvaleticích. Acta musei Reginaehradecensis, série A: vědy přírodní, 1981, roč. XVI., s. 99-102.
    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: 935; Jirásek, J.: Nález koninckitu u Litošic a jeho srovnání se světovými výskyty. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2005, roč. 13, s. 132-137.
      • South Bohemia Region
        • Písek
    		Historic mineral collection National museum of Czech Republic
    France
     
    • Champagne-Ardenne
      • Aube
    		Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    Germany
     
    • Hesse
      • Wetzlar
        • Rodheim-Bieber
    		Dana 7: I: 644; 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: 760,935.
        • Waldgirmes
    		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: 935.
    • Rhineland-Palatinate
      • Siegerland
        • Gebhardshain
          • Kausen
    		Wittern: "Mineralfundstellen in Deutschland", 2001
    Kazakhstan
     
    • Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast')
      • Karatau Range
        • Aksumbe
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    Slovakia
     
    • Banská Bystrica Region
      • Revúca Co.
        • Sirk
    		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: 935; Grecula,P. et al., 1995: Ložiska nerastných surovín Slovenského rudohoria. Zväz.1, Bratislava, 834 s
    Spain
     
    • Catalonia
      • Barcelona
        • Baix Llobregat
          • Gavà
            • Bruguers
    		Bareche, E (2005) "Els minerals de Catalunya. Segle XX" Ed. Grup Mineralògic Català, Barcelona, 269 p.
        • Maresme
          • Pineda de Mar
    		Bareche, E. (2005) "Els minerals de Catalunya. Segle XX" Ed. Grup Mineralògic Català, Barcelona, 269 p.
        • Vallès Occidental
          • Montcada i Reixac
    		Mineralogistes de Catalunya (1997), VII (1): 56-58
    Ukraine
     
    • Crimea Oblast'
      • Crimea peninsula
    		Geologiya SSSR (The geology of USSR) (1969) - Nedra (Moscou), 1969, vol. VIII, 575 p.
    USA
     
    • Washington
      • Stevens Co.
        • Deer Trail District
          • Turtle Lake
    		Cannon, B. (1975): Minerals of Washington, p.81
    • Wisconsin
      • Dodge Co.
        • Iron Ridge District (Neda Iron District)
    		Rocks & Min. Vol. 73 (1998)
    Mineral and/or Locality
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