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About ClaudetiteHide

Frederic J. Claudet
Colourless, white
Vitreous, Pearly
Crystal System:
Named in honor of Frederic Just Claudet (24 March 1826, Choisy-le-roi, France - 19 April 1906, Cannes, France), chemist who first described the natural material. Some of his best known work focused on light-sensitive chemicals in the early years of photography.
Dimorph of:
This page provides mineralogical data about Claudetite.

Classification of ClaudetiteHide

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

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations

3 : A2X3

7 : Oxides and Hydroxides
13 : Oxides of As, Sb and Bi

Physical Properties of ClaudetiteHide

Vitreous, Pearly
Colourless, white
2½ on Mohs scale
on {010}

Optical Data of ClaudetiteHide

Biaxial (-)
RI values:
nα = 1.870 nβ = 1.920 nγ = 2.010
Measured: 58° , Calculated: 78°
Max Birefringence:
δ = 0.140
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of ClaudetiteHide


Crystallography of ClaudetiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 5.33 Å, b = 12.98 Å, c = 4.54 Å
β = 94.27°
a:b:c = 0.411 : 1 : 0.35
Unit Cell V:
313.22 ų (Calculated from Unit Cell)
Thin plates on {010} and elongated [001] with {111} and {1_11} prominent, resembling gypsum.
On {100} as penetration or contact twins, common.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000053ClaudetiteFrueh A J (1951) The crystal structure of claudetite (monoclinic As2O3) American Mineralogist 36 833-85019510293
0019397ClaudetiteOriglieri M J, Downs R T, Carducci M D, Rosso K M, Gibbs G V (2006) Crystal structure and bonding in the new mineral AsSbO3 General Meeting of the International Mineralogical Association 19 142-1422006Jachymov, Erzgebirge, Czech Republic0293
0014662ClaudetitePertlik F (1975) Die kristallstruktur der monoklinen form von As2O3 (Claudetit II) Monatshefte fur Chemie 106 755-7621975synthetic0293
0014664ClaudetitePertlik F (1978) Verfeinerung der kristallstruktur des minerals claudetit Monatshefte fur Chemie 109 277-28219780293
0015770ClaudetiteBecker K A, Plieth K, Stranski I N (1951) Strukturuntersuchung der monoklinen arsenikmodifikation claudetit Zeitschrift fur Anorganische und Allgemeine Chemie 266 293-30119510293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
4.924 Å(25)
3.454 Å(50)
3.356 Å(20)
3.328 Å(18)
3.245 Å(100)
2.771 Å(35)
2.264 Å(25)

Type Occurrence of ClaudetiteHide

Synonyms of ClaudetiteHide

Other Language Names for ClaudetiteHide

Varieties of ClaudetiteHide

Antimonian ClaudetiteA variety containing significant Sb.

Relationship of Claudetite to other SpeciesHide

Other Members of this group:
StibioclaudetiteAsSbO3Mon. 2/m : P21/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Claudetite associated with KaatialaiteFe(H2AsO4)3 · 5H2O
7 photos of Claudetite associated with ArsenicAs
5 photos of Claudetite associated with ArsenoliteAs2O3
4 photos of Claudetite associated with GalenaPbS
4 photos of Claudetite associated with ScoroditeFe3+AsO4 · 2H2O
3 photos of Claudetite associated with SphaleriteZnS
2 photos of Claudetite associated with RealgarAs4S4
1 photo of Claudetite associated with CopiapiteFe2+Fe3+4(SO4)6(OH)2 · 20H2O

Related Minerals - Nickel-Strunz GroupingHide

4.CB.05BrizziiteNaSb5+O3Trig. 3 : R3
4.CB.05CorundumAl2O3Trig. 3m (3 2/m) : R3c
4.CB.05Ecandrewsite(Zn,Fe2+,Mn2+)TiO3Trig. 3 : R3
4.CB.05GeikieliteMgTiO3Trig. 3 : R3
4.CB.05HematiteFe2O3Trig. 3m (3 2/m) : R3c
4.CB.05IlmeniteFe2+TiO3Trig. 3 : R3
4.CB.05PyrophaniteMn2+TiO3Trig. 3 : R3
4.CB.05Unnamed (Auroantimonate)AuSbO3
4.CB.05TistariteTi3+2O3Trig. 3m (3 2/m) : R3c
4.CB.10AvicenniteTl2O3Iso. m3 (2/m 3) : Ia3
4.CB.10BixbyiteMn3+2O3Iso. m3 (2/m 3) : Ia3
4.CB.15Armalcolite(Mg,Fe2+)Ti2O5Orth. mmm (2/m 2/m 2/m)
4.CB.15PseudobrookiteFe2TiO5Orth. mmm (2/m 2/m 2/m)
4.CB.20Zincohögbomite-2N2S[(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2Hex. 6mm : P63mc
4.CB.20Zincohögbomite-2N6S[(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2Hex. 6mm : P63mc
4.CB.20Magnesiohögbomite-6N6S[(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6Trig. 3m (3 2/m) : R3m
4.CB.20Magnesiohögbomite-2N3S[(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2Trig. 3m (3 2/m) : P3 1m
4.CB.20Magnesiohögbomite-2N2S[(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2Hex. 6mm : P63mc
4.CB.20Ferrohögbomite-6N12S[(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6Trig. 3m (3 2/m) : R3m
4.CB.25KleberiteFeTi6O11(OH)5Mon. 2/m : P21/b
4.CB.30OxyvaniteV3+2V4+O5Mon. 2/m : B2/b
4.CB.40RinmaniteZn2Sb2Mg2Fe4O14(OH)2Hex. 6 : P63
4.CB.40IseiteMn2Mo3O8Hex. 6mm : P63mc
4.CB.40MajindeiteMg2Mo3O8Hex. 6mm : P63mc
4.CB.45StibioclaudetiteAsSbO3Mon. 2/m : P21/m
4.CB.50ArsenoliteAs2O3Iso. m3m (4/m 3 2/m) : Fd3m
4.CB.50SenarmontiteSb2O3Iso. m3m (4/m 3 2/m) : Fd3m
4.CB.55ValentiniteSb2O3Orth. mmm (2/m 2/m 2/m) : Pccn
4.CB.60BismiteBi2O3Mon. 2/m : P21/b
4.CB.70SilléniteBi12SiO20Iso. 2 3 : I2 3
4.CB.75KyzylkumiteV3+Ti2O5(OH)Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide 2/m : P21/b 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.13.1ArsenoliteAs2O3Iso. m3m (4/m 3 2/m) : Fd3m
7.13.3SenarmontiteSb2O3Iso. m3m (4/m 3 2/m) : Fd3m
7.13.4ValentiniteSb2O3Orth. mmm (2/m 2/m 2/m) : Pccn
7.13.7BahianiteAl5Sb3O14(OH)2Mon. 2/m : B2/m
7.13.8Cualstibite-1M(Cu,Al)3(OH)6[Sb5+(OH)6]Mon. 2/m : P21/b
7.13.9BismutostibiconiteBi(Sb5+,Fe3+)2O7Iso. m3m (4/m 3 2/m) : Fd3m
7.13.12BismiteBi2O3Mon. 2/m : P21/b
7.13.13SilléniteBi12SiO20Iso. 2 3 : I2 3

Other InformationHide

Health Risks:
Contains arsenic in a highly soluble form - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.


References for ClaudetiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Palache, Charles (1934) Contributions to crystallography; claudetite, minasragrite, samsonite, native selenium, indium: American Mineralogist: 19: 194-205; …(abstract): American Mineralogist: 19: 128 (1934).
Palache, Charles, Harry Berman & Clifford Frondel (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 545-547.

Internet Links for ClaudetiteHide

Localities for ClaudetiteHide

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.
  • New South Wales
    • Gough Co.
      • Tent Hill
Hebbard, E.R., Wilson, S.A., Jowitt, S.M., Tait, A.W., Turvey, C.C., Wilson, H.L. (2017): Regrowth of arsenate-sulfate efflorescences on processing plant walls at the Ottery arsenic-tin mine, New South Wales, Australia: Implications for arsenic mobility and remediation of mineral processing sites. Applied Geochemistry 79, 91-106.
  • Victoria
    • Golden Plains Shire
Museum Victoria Mineralogy Collection
  • Minas Gerais
    • Conselheiro Pena
Cassedanne, J.P., Cassedanne, J.O. (1982) Presence de legrandite dans une pegmatite de Minas Gerais, Bresil. The Canadian Mineralogist: 20(1): 87-89.
    • Galiléia
      • Laranjeiras
[MinRec 12:69]
  • Arica y Parinacota
    • Arica Province
      • Los Camarones valley
Samples analysed by Tony Kampf of LAC Mineralogical Museum, USA
  • Atacama
    • Chañaral Province
      • Diego de Almagro
Econ Geol (1991) 86:1287-1300
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga mining district
samples analysed by Jochen Schluter, Gerhard Mohn and Joy Desor
  • Tarapacá
    • Iquique Province
      • Salar Grande
SEM-EDS by Joy Desor
  • Hunan
    • Changde
      • Shimen Co.
        • Shimen deposit (Huangchang deposit)
Zhu, X., Wang, R., Lu, X., Liu, H., Li, J., Ouyang, B., Lu, J. (2015): Secondary minerals of weathered orpiment-realgar-bearing tailings in Shimen carbonate-type realgar mine, Changde, Central China. Mineral. Petrol. 109, 1-15. ; Roth, P., Raber, T., Favreau, G. and Meisser, N. (2017): Thallium Sulfosalts from the Shimen As-Deposit, Hunan, China. Mineral Up 4(6): 8-22.
Czech Republic
  • Karlovy Vary Region
    • Karlovy Vary District
      • Jáchymov
Lapis 2002(7/8), 47
Sehrig, M. & Dietel, J. (2011): Silber, Uran, Arsen und Heilquellen: Auf Mineraliensuche in Jáchymov, einem der ältesten Bergwerke der Welt. Lapis 36 (7-8), 67-71; 86.
  • Auvergne-Rhône-Alpes
    • Loire
      • Saint-Étienne
        • La Ricamarie
Laurent, H. (1995) - Minéralisations des houillères embrasées, Le Règne Minéral,(2), 41-45.
  • Occitanie
    • Aveyron
      • Villefranche-de-Rouergue
        • Decazeville
          • Decazeville coal basin
Dana 7:I:547.
  • Lower Saxony
    • Goslar District
      • Braunlage
        • St Andreasberg
No reference listed
      • Langelsheim
        • Astfeld
Schnorrer, G. (1993): Mineralogische Notizen VI. Aufschluss, 44, 44-58.
  • North Rhine-Westphalia
    • Arnsberg
      • Uentrop
Lapis, 14 (6), 11-32+50.
  • Saxony
    • Erzgebirgskreis
      • Ehrenfriedersdorf
Wittern: "Mineralfundorte in Deutschland", 2001
      • Marienberg
        • Lauta
Wolfgang Stoll
    • Mittelsachsen
      • Freiberg
        • Freiberg smelter
John Sobolewski collection
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Plaka
            • Plaka Mines
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
  • Pest County
    • Szob District
      • Nagybörzsöny
Szakáll & Jánosi: Minerals of Hungary, 1995
  • Oita Prefecture
    • Hayami District
      • Yamaga
Matsubara, S. et al (2001) Mineralogical Magazine, 65, 807-812.
  • Drâa-Tafilalet Region
    • Zagora Province
      • Agdz Cercle
Jean-Pierre Barral specimens
  • Oshikoto Region
    • Tsumeb
Gebhard, G. (1999): Tsumeb II. A Unique Mineral Locality. GG Publishing, Grossenseifen, Germany
New Zealand
  • West Coast Region
    • Buller District
      • Reefton
Quantification and controls on As distribution in Westland, NZ L. Haffert1, D. Craw1, J. Pope2
North Macedonia
  • Kavadarci Municipality
    • Rožden
Boev, B., Bermanec, V., Serafimovski, T., Lepitkoval, S., & Mikulcic, S. (2001). Allchar Mineral Assemblage. Geologica Macedonica, Vol. 15-16, p. 1-23 (2001-2002) Suppl
Gunnar Färber specimens
Portugal (TL)
  • Beja
    • Mértola
      • Corte do Pinto
Dana (1868); Dana 7:I:456, 545; AM 36 (1951), 833
  • Covasna
Kristály, F. & Szakáll, S. (2009): Mitt. Österr. Mineral. Ges. 155, 94. (Abs.)
  • Košice Region
    • Gelnica District
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
  • England
    • Cornwall
      • Redruth
Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
    • Cumbria
      • Allerdale
        • Caldbeck
          • Coombe Height
[J.Russell Soc. 1998:36]
  • Arizona
    • Mohave County
The Canadian Mineralogist; October 2007; v. 45; no. 5; p. 1177-1188
    • Yavapai Co.
      • Black Hills (Black Hill Range)
        • Verde Mining District
          • Jerome
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 175; Palache, C. (1934), Contributions to crystallography: Claudetite, minasragite, samsonite, native selenium, iridium, Am.Min.: 19: 194-205; Buerger, M.S. (1942), The unit cell and space group of claudetite As2O3 (abstract), Am.Min.: 27: 216; Galbraith, F.W. & Brennan (1959), Minerals of AZ: 30.
  • California
    • Imperial Co.
      • 4-S Ranch area
Palache, Charles (1934), Contributions to crystallography; claudetite, minasragrite, samsonite, native selenium, indium: American Mineralogist: 19: 194; Kelley, Vincent Cooper (1936), Occurrence of claudetite in Imperial County, California: American Mineralogist (1936): 21: 137-138; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 185-186.
    • Trinity Co.
      • Coastal Range
        • Island Mountain
          • Moose Peak
Landon, Robert Emmanuel (1927), Roemerite from California: American Mineralogist: 12: 279-283; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 151.
  • Connecticut
    • Middlesex Co.
      • Middletown
Schooner, Richard. (circa 1980s), Untitled manuscript on central Connecticut mineralogy.
  • Nevada
    • Lander Co.
      • McCoy Mining District
U. S. Geological Survey Open-File Report 02-195
    • Nye Co.
      • Toquima Range
        • Manhattan Mining District
          • Manhattan
Mineralogical Record 16:86
  • South Dakota
    • Custer Co.
      • Iron Mountain
SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
  • Virginia
Minerals of Virginia, 1990 by R. V. Dietrich
Mineral and/or Locality  
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