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Delvauxite

Big Photo

Visé, Liège Province, Belgium
© JDehove

Show Delvauxite Photos (5)
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 Feuffe (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:Berneau, Visé, 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
[(F,OH)
 
5
|(PO
 
4
)
 
2
]
 
2
 · 3H
 
2
O
8.DM.05Esperanzaite
NaCa
 
2
Al
 
2
[F
 
4
|OH|(AsO
 
4
)
 
2
] · 2H
 
2
O
8.DM.10Clinotyrolite
Ca
 
2
Cu
 
9
[(OH,O)
 
10
|(AsO
 
4
,SO
 
4
)
 
4
] · 10H
 
2
O
8.DM.10Tyrolite
Ca
 
2
Cu
 
9
[(OH)
 
4
|(H
 
2
O)
 
11
|CO
 
3
|(AsO
 
4
)
 
4
] · 0-1H
 
2
O
8.DM.15Betpakdalite
{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
CaFeH
 
6
(MoO
 
4
)
 
4
PO
 
4
·6H
 
2
O or near·
8.DM.15Natrobetpakdalite
(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+
 
[(OH)
 
3
|(AsO
 
4
)
 
2
] · 5H
 
2
O
8.DM.30Uduminelite
Ca
 
3
Al
 
8
(PO
 
4
)
 
2
O
 
12
·2H
 
2
O
8.DM.40Santafeite
(Ca,Sr,Na)
 
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
[(OH)
 
2
|PO
 
4
]
 
2
 · 2H
 
2
O
19.14.2Kidwellite
NaFe
3+
9
[(OH)
 
5
|(PO
 
4
)
 
3
]
 
2
 · 5H
 
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
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.7Leucophosphite
KFe
3+
2
[OH|(PO
 
4
)
 
2
] · 2H
 
2
O
19.14.8Spheniscidite
(NH
 
4
,K)(Fe
3+
 
,Al)
 
2
[OH|(PO
 
4
)
 
2
] · 2H
 
2
O
19.14.9Burangaite
(Na,Ca
 
0.5
)(Fe
2+
 
,Mg)Al
 
5
[(OH,O)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.10Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
[(OH,O)|PO
 
4
]
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
[(OH,F)|PO
 
4
]
 
2
19.14.14Anapaite
Ca
 
2
Fe
2+
 
[PO
 
4
]
 
2
 · 4H
 
2
O
19.14.15Xanthoxenite
Ca
 
4
Fe
3+
2
[OH|(PO
 
4
)
 
2
]
 
2
 · 3H
 
2
O
19.14.16Calcioferrite
Ca
 
2
Fe
3+
2
[OH|(PO
 
4
)
 
3
] · 7H
 
2
O
19.14.17Mitridatite
Ca
 
2
Fe
3+
3
[O
 
2
|(PO
 
4
)
 
3
] · 3H
 
2
O
19.14.18Mélonjosephite
CaFe
2+
 
Fe
3+
 
[OH|(PO
 
4
)
 
2
]
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
[(OH)
 
2
|(PO
 
4
)
 
3
]
 
2
 · 12H
 
2
O
19.14.23Vauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
19.14.24Metavauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
19.14.25Paravauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
19.14.26Sigloite
Fe
3+
 
Al
 
2
[(OH)
 
3
|(PO
 
4
)
 
2
] · 7H
 
2
O
19.14.27Cacoxenite
Fe
3+
24
Al[(OH)
 
12
|O
 
6
|(PO
 
4
)
 
17
] · 17H
 
2
O
19.14.28Koninckite
Fe
3+
 
[PO
 
4
] · 3H
 
2
O
19.14.29Lazulite
(Mg,Fe
2+
 
)Al
 
2
[OH|PO
 
4
]
 
2
19.14.30Scorzalite
(Fe
2+
 
,Mg)Al
 
2
[OH|PO
 
4
]
 
2
19.14.31Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.32Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.33Zaïrite
Bi(Fe
3+
 
,Al)
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]

Other Names for Delvauxite

Synonyms:
Delvauxite (of Dumont)FouchéiteFoucheriteFouchériteFuchérite
Picite
French names:
Delvauxene
German names:
DelvauxitDelvauxit (of Hauer)
Spanish names:
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

    Hide Locality List
    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.
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    (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
        • South Mt Lofty Ranges
          • Kapunda
    Austria
     
    • Lower Austria
      • Waldviertel
        • Mühldorf
          • Amstall
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    • Styria
      • Koralpe Mts
        • Modriach
          • Herzogberg Mt.
    		H. Meixner: Der Karinthin 45/46:241-244 (1962)
    Belgium
     
    • Liège Province
    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)
      • 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.
    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
     
    • Ongtüstik Qazaqstan Oblysy (Southern-Kazakhstan Oblast')
      • Karatau Range
        • Kurumsak River Valley
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    Slovakia
     
    • Banská Bystrica Region
      • Western Slovenské Rudohorie Mts
        • Sirk (Szirk)
    		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 Oriental
          • Montcada i Reixac
    		Mineralogistes de Catalunya (1997), VII (1): 56-58
    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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