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Claudetite

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Formula:
As2O3
Colour:
Colourless, white
Lustre:
Vitreous, Pearly
Hardness:
Crystal System:
Monoclinic
Name:
Named after F. Claudet, French chemist, who first described the natural material.
Dimorph of:
This page provides mineralogical data about Claudetite.


Hide all sections | Show all sections

Classification of ClaudetiteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.CB.45

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
4.3.10.1

4 : SIMPLE OXIDES
3 : A2X3
7.13.2

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

Physical Properties of ClaudetiteHide

Vitreous, Pearly
Transparency:
Transparent
Colour:
Colourless, white
Hardness:
2½ on Mohs scale
Tenacity:
Elastic
Cleavage:
Perfect
on {010}
Fracture:
Fibrous

Optical Data of ClaudetiteHide

Type:
Biaxial (-)
RI values:
nα = 1.870 nβ = 1.920 nγ = 2.010
2V:
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
Dispersion:
strong

Chemical Properties of ClaudetiteHide

Formula:
As2O3

Crystallography of ClaudetiteHide

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

X-Ray Powder DiffractionHide

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

Type Occurrence of ClaudetiteHide

Synonyms of ClaudetiteHide

Other Language Names for ClaudetiteHide

Varieties of ClaudetiteHide

Antimonian ClaudetiteA variety containing significant Sb.

Possibly identical to stibioclaudetite?

Relationship of Claudetite to other SpeciesHide

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

Common AssociatesHide

Associated Minerals Based on Photo Data:
Kaatialaite7 photos of Claudetite associated with Kaatialaite on mindat.org.
Arsenic7 photos of Claudetite associated with Arsenic on mindat.org.
Arsenolite5 photos of Claudetite associated with Arsenolite on mindat.org.
Galena4 photos of Claudetite associated with Galena on mindat.org.
Scorodite4 photos of Claudetite associated with Scorodite on mindat.org.
Sphalerite3 photos of Claudetite associated with Sphalerite on mindat.org.
Realgar2 photos of Claudetite associated with Realgar on mindat.org.
Copiapite1 photo of Claudetite associated with Copiapite on mindat.org.

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.05EskolaiteCr2O3Trig.
4.CB.05GeikieliteMgTiO3Trig. 3 : R3
4.CB.05HematiteFe2O3Trig. 3m (3 2/m) : R3c
4.CB.05IlmeniteFe2+TiO3Trig. 3 : R3
4.CB.05KarelianiteV3+2O3Trig.
4.CB.05MelanostibiteMn2+(Sb5+,Fe3+)O3Trig.
4.CB.05PyrophaniteMn2+TiO3Trig. 3 : R3
4.CB.05Akimotoite(Mg,Fe2+)SiO3Trig.
4.CB.05AuroantimonateAuSbO3
4.CB.05UM1998-11-O-AuHSbAu+2Sb3+O2(OH)
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.25PseudorutileFe2Ti3O9Hex.
4.CB.25KleberiteFeTi6O11(OH)5Mon. 2/m : P21/b
4.CB.30BerdesinskiiteV3+2TiO5Mon.
4.CB.30OxyvaniteV3+2V4+O5Mon. 2/m : B2/b
4.CB.35Olkhonskite(Cr,V)2Ti3O9Mon.
4.CB.35SchreyeriteV3+2Ti3O9Mon.
4.CB.40KamiokiteFe2Mo3O8Hex.
4.CB.40Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2Hex.
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.65SphaerobismoiteBi2O3Tet.
4.CB.70SilléniteBi12SiO20Iso. 2 3 : I2 3
4.CB.75KyzylkumiteV3+Ti2O5(OH)Mon. 2/m : P21/b
4.CB.80TietaiyangiteFe3+4Fe2+TiO9Hex.

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

4.3.10.2BismiteBi2O3Mon. 2/m : P21/b
4.3.10.3StibioclaudetiteAsSbO3Mon. 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
7.13.5CervantiteSb3+Sb5+O4Orth.
7.13.6Stibiconite(Sb,O,OH) ?
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
7.13.107.13.11StibivaniteSb2VO5Orth.
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.

See:

http://membership.acs.org/c/ccs/pubs/CLIPS/JCE20020023.pdf

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.
Australia
 
  • 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
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
    • Galiléia
      • Laranjeiras
[MinRec 12:69]
Chile
 
  • Arica and Parinacota Region
    • Arica Province
      • Los Camarones
Samples analysed by Tony Kampf of LAC Mineralogical Museum, USA
  • Atacama Region
    • Chañaral Province
      • Diego de Almagro
Econ Geol (1991) 86:1287-1300
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga district
samples analysed by Jochen Schluter, Gerhard Mohn and Joy Desor
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
          • Jáchymov (St Joachimsthal)
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.
France
 
  • Auvergne-Rhône-Alpes
    • Loire
      • Saint-Etienne
        • La Ricamarie
Laurent, H. (1995) - Minéralisations des houillères embrasées, Le Règne Minéral,(2), 41-45.
  • Occitanie
    • Aveyron
      • Decazeville
        • Decazeville coal basin
Dana 7:I:547.
Germany
 
  • Lower Saxony
    • Harz
      • Goslar
        • Astfeld
Schnorrer, G. (1993): Mineralogische Notizen VI. Aufschluss, 44, 44-58.
      • St Andreasberg District
        • St Andreasberg
No reference listed
  • North Rhine-Westphalia
    • Sauerland
      • Arnsberg
        • Uentrop
Lapis, 14 (6), 11-32+50.
  • Saxony
    • Erzgebirge
      • Ehrenfriedersdorf
Wittern: "Mineralfundorte in Deutschland", 2001
      • Freiberg District
        • Freiberg
          • Freiberg smelter
John Sobolewski collection
      • Marienberg District
        • Lauta
Wolfgang Stoll
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • 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).
Hungary
 
  • Pest Co.
    • Börzsöny Mts
      • Nagybörzsöny (Deutsch Pilsen; Deutschpilsen)
Szakáll & Jánosi: Minerals of Hungary, 1995
Japan
 
  • Kyushu Region
    • Oita prefecture
      • Hayami-gun
        • Yamaga
Matsubara, S. et al (2001) Mineralogical Magazine, 65, 807-812.
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
        • Bou Azzer District (Bou Azer District)
Jean-Pierre Barral specimens
Namibia
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Gebhard, G. (1999): Tsumeb II. A Unique Mineral Locality. GG Publishing, Grossenseifen, Germany
New Zealand
 
  • South Island
    • West Coast (Westland)
      • Reefton
Quantification and controls on As distribution in Westland, NZ L. Haffert1, D. Craw1, J. Pope2
Portugal (TL)
 
  • Beja District
    • Mértola
      • Corte do Pinto
Dana (1868); Dana 7:I:456, 545; AM 36 (1951), 833
Republic of Macedonia
 
  • Kavadarci
    • Rožden (Rozhden; Roszdan)
Boevl, 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
Romania
 
  • Covasna Co.
Kristály, F. & Szakáll, S. (2009): Mitt. Österr. Mineral. Ges. 155, 94. (Abs.)
Slovakia
 
  • Košice Region
    • Gelnica Co.
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
UK
 
  • England
    • Cornwall
      • Redruth
Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
    • Cumbria
      • Caldbeck Fells
        • Coombe Height
[J.Russell Soc. 1998:36]
USA
 
  • Arizona
    • Mohave Co.
      • Hualapai Indian Reservation
The Canadian Mineralogist; October 2007; v. 45; no. 5; p. 1177-1188
    • Yavapai Co.
      • Black Hills (Black Hill Range)
        • Verde 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 District
U. S. Geological Survey Open-File Report 02-195
    • Nye Co.
      • Toquima Range
        • Manhattan 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
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