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Julien J.J. Fraipont
May contain some Cu.
Crystal System:
Named in 1927 by Giuseppe Raimondo Pio Cesàro in honor of Julien Jean Joseph Fraipont [August 17 1857 Liège, Belgium - March 22, 1910 Liège, Belgium], paleontologist and professor of zoology at the University of Liège and noted for his work on Neanderthal man and in honor of his his son, Charles Marie Joseph Julien Fraipont [March 21, 1883 Chênée, Liège, Belgium - April 15, 1946 Forest, near Frasnes-lez-Anvaing, Belgium] professor of paleontology at University of Liège and who also studied Neanderthal man, as well as subjects in his specialty of phytopaleontology.

Classification of Fraipontite

Approved, 'Grandfathered' (first described prior to 1959)

9 : SILICATES (Germanates)
E : Phyllosilicates
D : Phyllosilicates with kaolinite layers composed of tetrahedral and octahedral nets

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
1 : Sheets of 6-membered rings with 1:1 layers

16 : Silicates Containing Aluminum and other Metals
12 : Aluminosilicates of Sr, Ba and Zn

Physical Properties of Fraipontite

2½ on Mohs scale

Optical Data of Fraipontite

Biaxial (-)
RI values:
nα = 1.620 nβ = 1.624 nγ = 1.624
Measured: 15° to 20°
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r < v strong

Chemical Properties of Fraipontite


May contain some Cu.
IMA Formula:
Common Impurities:

Crystallography of Fraipontite

Crystal System:
Cell Parameters:
a = 5.34 Å, b = 9.21 Å, c = 14.12 Å
β = 93.2°
a:b:c = 0.58 : 1 : 1.533
Unit Cell V:
693.36 ų (Calculated from Unit Cell)

X-Ray Powder Diffraction

Powder Diffraction Data:
7.03 (100)
4.60 (20)
3.53 (70)
2.650 (40)
2.490 (30)
2.385 (30)
1.540 (30)

Type Occurrence of Fraipontite

Place of Conservation of Type Material:
Laboratory of Mineralogy, University of Liège

Synonyms of Fraipontite

Other Language Names for Fraipontite


Varieties of Fraipontite

Cuprian Fraipontite

A copper-bearing variety of fraipontite.

Relationship of Fraipontite to other Species

Other Members of this group:

Common Associates

Associated Minerals Based on Photo Data:
Wulfenite7 photos of Fraipontite associated with Wulfenite on
Galena5 photos of Fraipontite associated with Galena on
Aurichalcite2 photos of Fraipontite associated with Aurichalcite on
Zálesíite2 photos of Fraipontite associated with Zálesíite on
Smithsonite2 photos of Fraipontite associated with Smithsonite on
Baryte2 photos of Fraipontite associated with Baryte on
Diaboleite1 photo of Fraipontite associated with Diaboleite on
Hemimorphite1 photo of Fraipontite associated with Hemimorphite on
Cerussite1 photo of Fraipontite associated with Cerussite on
Agardite-(Y)1 photo of Fraipontite associated with Agardite-(Y) on

Related Minerals - Nickel-Strunz Grouping

9.ED.10HisingeriteFe3+2(Si2O5)(OH)4 · 2H2O
9.ED.20Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
9.ED.20ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
9.ED.20Neotocite(Mn,Fe,Mg)SiO3 · H2O

Related Minerals - Hey's Chemical Index of Minerals Grouping

16.12.6CymriteBaAl2Si2(O,OH)8 · H2O
16.12.7EdingtoniteBa[Al2Si3O10] · 4H2O
16.12.9Harmotome(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
16.12.12ArmeniteBaCa2Al6Si9O30 · 2H2O
16.12.13Wellsite(Ba,Ca,K2)Al2Si6O16 · 6H2O
16.12.14Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O
16.12.17SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O

Related Minerals - Dana Grouping (8th Ed.)


Other Information

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 Fraipontite

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cesàro, G. (1927): Sur la fraipontite, silicate basique hydraté de zinc et d'aluminium. Ann. Soc. Geol. Belgique, 50, 106-110 (in French).
Fransolet, A.-M. and P. Bourguignon (1975): Données nouvelles sur la fraipontite de Moresnet (Belgique). Bull. Soc. fr. Minéral., 98, 235-244 (in French with English abs.)
Dimitriadis, S. (1977): Cuprian fraipontite from Laurion, Greece. Neues Jahrbuch für Mineralogie, Monatshefte 155-162.
American Mineralogist: 62: 175.
Foord, E.E., J.E. Taggart, and N.M. Conklin (1983): Cuprian fraipontite and sauconite from the Defiance-Silver Bill mines, Gleeson, Arizona. Mineral. Record, 14, 131-132.

Internet Links for Fraipontite URL:
Please feel free to link to this page.

Localities for Fraipontite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Minerals of Iron Monarch, Glyn L. Francis
  • Tasmania
    • West Coast municipality
      • Zeehan district
        • Zeehan mineral field
Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
  • Carinthia
    • Gailtaler Alpen & Karnische Alpen
      • Bleiberg District
        • Bad Bleiberg
G. Niedermayr: Carinthia II, 177./97.: 287 (1987)
Belgium (TL)
  • Liège Province
    • Verviers
      • Plombières-Vieille Montagne-Moresnet (Plombières-Altenberg-Moresnet) mining district
        • Kelmis (La Calamine)
Ann.Soc.géol.Belgique,(1927) 50, B106-B110
  • Tarapacá Region
    • El Tamarugal Province
      • Challacollo
  • Occitanie
    • Aveyron
      • Villefranche-de-Rouergue
Patrice Queneau Collection
  • North Rhine-Westphalia
    • Sauerland
      • Meschede
Wittern: "Mineralfundorte in Deutschland", 2001
SCHNORRER, G. (1995): Mineralogische Neuheiten von bekannten deutschen Fundorten. Lapis 20 (12), 43-48; 62.
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
No reference listed
            • Hilarion area
No reference listed
No reference listed
No reference listed
        • Sounion area
          • Agia Varvara Mines (St Barbara Mines)
Branko Rieck Collection
Lapis, 24, 7/8, (1999)
  • Sardinia
    • Sassari Province
      • Sassari
Orlandi, P., & Gelosa, M. (2007). Argentiera della Nurra. I minerali di alterazione della miniera di sfalerite e galena argentifera. Rivista Mineralogica Italiana, 31 (1), 22-31. ; Ara D., Sanna L., Rossi A., Galli E., De Waele J. (2013): Minerali secondari in ambiente sotterraneo: la miniera dell’Argentiera (Sardegna nord-occidentale). In: Cucchi F., Gudi P. (eds.), Atti del XXI Congresso Nazionale di Speleologia “Diffusione delle conoscenze”, Sessione Attività di esplorazione e ricerca. Trieste 2-5 giugno 2011. Edizioni Università di Trieste, Trieste, 290-295.
  • Tuscany
    • Grosseto Province
      • Montieri
        • Gerfalco
A.Costantini, G.Pagani (2015) Minerali: bellezze della natura nel parco delle colline metallifere - Tuscan mining geopark . 1-266
    • Massa-Carrara Province
      • Apuan Alps
Orlandi, P. & Criscuolo, A. (2009). Minerali del marmo delle Alpi Apuane. Pacini editore, Pisa, 180 pp.
S. Merlino & P. Orlandi (2001): Carraraite and zaccagnaite, two new minerals ..... Amer. Miner. 86, 1293-1301
Kazakhstan (TL)
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
    • Akdzhal
Chukrov, F.V. (1956): Kora Vyvetrivania 2, 107-123, abstract in American Mineralogist 44, 208 (1959).; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
  • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
    • Balkhash Region (Balqash; Karatas; Prebalkhashie)
      • Gul'shad (Gul'shat; Gul'sad)
  • Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast')
    • Karatau Range
      • Kentau
        • Ashchysay (Achisay)
Chukrov, F.V. (1956): Kora Vyvetrivania 2, 107-123, abstract in American Mineralogist 44, 208 (1959).
  • L'oriental Region
    • Jbel Bou Arhous
F. Choulet, M. Buatier, L. Barbanson, R. Guégan, A. Ennaciri (2016): Zinc-rich clays in supergene non-sulfide zinc deposits. Mineralium Deposita 51, 467–490.
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Gebhard, G. (1999): Tsumeb II. A Unique Mineral Locality. GG Publishing, Grossenseifen, Germany
  • Suceava Co.
    • Suceava district
      • Iacobeni (Jakobeny; Jacobeny; Jakabfalva)
  • Andalusia
    • Almería
      • San José
Georges FAVREAU collection
  • Catalonia
    • Lleida (Lérida)
      • Cerdanya
Calvo, M., Viñals, J. & Triviño, A.: Zálesiíte, felsobanyaite and fraipontite, in a conglomerate in Prullans, La Cerdanya, Catalonia (Spain). Mineral Up, Vol. I, 3, 49-51
  • Wallis (Valais)
    • Anniviers Valley
      • Saint-Luc
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
  • Lebap Province
    • South Tien-Shan Mts
      • Kugitangtau Ridge; Maltsev, V., & Korshunov, V. (1998). Geochemistry of fluorite and related features of the Kugitangtou Ridge Caves, Turkmenistan. Journal of Caves and Karst Studies, 60, 151-155.; Vladimir A. Maltsev (1993) Minerals of the Cupp-Coutunn Karst Cave System, Southeast Turkmenistan. World of Stone 2:5-30
  • England
    • Cumbria
      • Caldbeck Fells
        • Roughton Gill
Pluth, J. J., Steele, I. M., Kampf, A. R. & Green, D. I. (2005): Redgillite, Cu6(OH)10(SO4)•H2O, a new mineral from Caldbeck Fells, Cumbria, England: description and crystal structure. Mineralogical Magazine, 69, 973-980.
    • North Yorkshire
      • North Pennines
        • Swaledale
          • Marrick
Daltry, Vaughn & Deliens, Michel (1994) The Type Mineralogy of Belgium . Annals of the Belgium Geological Society 116:15-28
        • Wensleydale
          • Redmire
BMS Database
  • Wales
    • Caerphilly
      • Machen
Minerals of Machen Quarry, Plant & Jones, Journal of the Russell Society, Vol 6, Pt 1, 1995
  • Arizona
    • Cochise Co.
      • Dragoon Mts
        • Turquoise District (Courtland-Gleeson District)
          • Gleeson
            • Costello Mine group (Costello claims)
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 361; Foord, E.E., et al (1983), Cuprian fraipontite and sauconite from the Defiance-Silver Bill Mines, Gleeson, AZ, Min.Rec.: 14: 131-132.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 226, 361; Foord, E.E., et al (1983), Cuprian fraipontite and sauconite from the Defiance-Silver Bill mines, Gleeson, AZ, Min.Rec.: 14: 131-132.
    • Pinal Co.
      • Mammoth District
        • Tiger
          • St. Anthony deposit
1) ID Paul Hlava, New Mexico. 2) An ID of Cuprian Fraipontite is consistent with form and composition determined by EDS and WDS microprobe analysis on November 17, 2006 at Cannon Microprobe--Seattle, Washington, USA
  • California
    • Inyo Co.
      • Nopah Range
        • Upper Noonday Camp
          • Shoshone Mines (Shoshone Mines group; Shoshone Mine group; Grant Mine; Mabel Mine; Black Prince Mine)
Mindat gallery; Robert M. Housley (2005) Noonday and War Eagle mines, Tecopa Pass, Inyo Co. CA. Abstracts from the 2005 Desert Symposium. California State University, Desert Studies Consortium and LSA Associates, Inc.
    • San Bernardino Co.
      • Clark Mts (Clark Mountain Range)
        • Clark Mountain District (Clark District)
          • Mohawk Hill
[Mineralien Welt 1/93:44]
      • Silver Lake District
        • Soda Mts
          • Zzyzx (Fort Soda; Soda; Soda Springs; Zzyzx Mineral Spring Resort)
Collected by and in the collection of Brent Thorne.
  • Nevada
    • Clark Co.
      • Spring Mts
        • Goodsprings District
Rocks & Minerals 83:1 pp 65-69
    • Elko Co.
      • Bootstrap District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Eureka Co.
      • Carlin Trend
        • Maggie Creek Subdistrict
Martin Jensen and Joe Leising (unpublished analysis, 1999).
      • Maggie Creek District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Nye Co.
      • Lodi Hills
        • Lodi District
          • Quartz Mountain camp
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Ogdensburg
          • Sterling Hill
Chukrov, F.V.: Kora Vyvetrivania:2:107-123 (1956)(abstract in Am.Min.:44:208); Dunn(1995):Pt4:505.
  • New Mexico
    • Hidalgo Co.
      • Peloncillo Mts
        • San Simon District
          • Granite Gap
Rolf Luetcke
R. D. Green photo
          • Kimball
NMBMMR New Mexico Mineral symposium (2003) pp. 8-9
    • Socorro Co.
Northrop, Minerals of New Mexico, 3rd Rev. ed., 1996
        • Bingham
Minerals of New Mexico 3rd ed.
Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996)
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