Claudetite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Claudetite
Frederic J. Claudet
Formula:
As2O3
Colour:
Colourless, white
Lustre:
Vitreous, Pearly
Hardness:
2½
Specific Gravity:
4.14 - 4.15
Crystal System:
Monoclinic
Member of:
Name:
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.
Type Locality:
Dimorph of:
This page provides mineralogical data about Claudetite.
Unique Identifiers
Mindat ID:
1060
Long-form identifier:
mindat:1:1:1060:9
GUID
(UUID V4):
(UUID V4):
55580ed1-2645-4979-be0b-babbbce31c51
IMA Classification of Claudetite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1868
Classification of Claudetite
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 : 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
4 : SIMPLE OXIDES
3 : A2X3
7.13.2
7 : Oxides and Hydroxides
13 : Oxides of As, Sb and Bi
7 : Oxides and Hydroxides
13 : Oxides of As, Sb and Bi
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Cdt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Claudetite
Vitreous, Pearly
Transparency:
Transparent
Comment:
Pearly on fracture surface
Colour:
Colourless, white
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Elastic
Cleavage:
Perfect
on {010}
on {010}
Fracture:
Splintery
Density:
4.14 - 4.15 g/cm3 (Measured) 4.186 g/cm3 (Calculated)
Optical Data of Claudetite
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.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
strong
Chemistry of Claudetite
Mindat Formula:
As2O3
Elements listed:
Crystallography of Claudetite
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°
β = 94.27°
Ratio:
a:b:c = 0.411 : 1 : 0.35
Unit Cell V:
313.22 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Thin plates on {010} and elongated [001] with {111} and {111} prominent, resembling selenite.
Twinning:
On {100} as penetration or contact twins, common.
Comment:
Space Group: P21/n (synthetic)
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0000053 | Claudetite | Frueh A J (1951) The crystal structure of claudetite (monoclinic As2O3) American Mineralogist 36 833-850 |  | 1951 | 0 | 293 | |
| 0019397 | Claudetite | Origlieri 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 19 142-142 | 2006 | Jachymov, Erzgebirge, Czech Republic | 0 | 293 | |
| 0014662 | Claudetite | Pertlik F (1975) Die kristallstruktur der monoklinen form von As2O3 (Claudetit II) Monatshefte fur Chemie 106 755-762 | 1975 | synthetic | 0 | 293 | |
| 0014664 | Claudetite | Pertlik F (1978) Verfeinerung der kristallstruktur des minerals claudetit Monatshefte fur Chemie 109 277-282 | 1978 | 0 | 293 | ||
| 0015770 | Claudetite | Becker K A, Plieth K, Stranski I N (1951) Strukturuntersuchung der monoklinen arsenikmodifikation claudetit Zeitschrift fur Anorganische und Allgemeine Chemie 266 293-301 | 1951 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 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) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Claudetite
General Appearance of Type Material:
Thin plates, resembling selenite.
Place of Conservation of Type Material:
No designated type material.
Geological Setting of Type Material:
In seams, in arsenopyrite ore.
Associated Minerals at Type Locality:
Synonyms of Claudetite
Other Language Names for Claudetite
French:Acide arsénieux prismatique
German:Claudetit
Rhombarsenit
Rhombarsenit
Russian:Клаудетит
Spanish:Claudetita
Rhombarsenita
Rhombarsenita
Varieties of Claudetite
| Antimony-bearing Claudetite | A variety containing significant Sb. Possibly identical to stibioclaudetite? |
Relationship of Claudetite to other Species
Common Associates
Associated Minerals Based on Photo Data:
| 15 photos of Claudetite associated with Kaatialaite | Fe(H2AsO4)3 · 5H2O |
| 12 photos of Claudetite associated with Arsenolite | As2O3 |
| 10 photos of Claudetite associated with Arsenic | As |
| 4 photos of Claudetite associated with Galena | PbS |
| 4 photos of Claudetite associated with Scorodite | Fe3+AsO4 · 2H2O |
| 3 photos of Claudetite associated with Sphalerite | ZnS |
| 2 photos of Claudetite associated with Realgar | As4S4 |
| 1 photo of Claudetite associated with Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
| 1 photo of Claudetite associated with Silver | Ag |
Related Minerals - Strunz-mindat Grouping
| 4.CB. | Ferrohögbomite-2N2S | [(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2 |
| 4.CB. | Magnesiohögbomite-6N12S | Mg5Al11TiO23(OH) |
| 4.CB. | Zhenruite | (MoO3)2 · H2O |
| 4.CB. | Pengite | (Pb8Sb3+3)Σ11Sb5+9O35 |
| 4.CB. | Virgilluethite | MoO3 · H2O |
| 4.CB.05 | Brizziite | NaSb5+O3 |
| 4.CB.05 | Corundum | Al2O3 |
| 4.CB.05 | Ecandrewsite | (Zn,Fe2+,Mn2+)TiO3 |
| 4.CB.05 | Eskolaite | Cr2O3 |
| 4.CB.05 | Geikielite | MgTiO3 |
| 4.CB.05 | Hematite | Fe2O3 |
| 4.CB.05 | Ilmenite | Fe2+TiO3 |
| 4.CB.05 | Karelianite | V3+2O3 |
| 4.CB.05 | Melanostibite | Mn2+2Fe3+Sb5+O6 |
| 4.CB.05 | Pyrophanite | Mn2+TiO3 |
| 4.CB.05 | Akimotoite | (Mg,Fe2+)SiO3 |
| 4.CB.05 | Auroantimonate | AuSbO3 |
| 4.CB.05 | UM1998-11-O-AuHSb | Au+2Sb3+O2(OH) |
| 4.CB.05 | Tistarite | Ti3+2O3 |
| 4.CB.05 | Unnamed (Fe-Cr Oxide) | FeCrO3 |
| 4.CB.05 | Hemleyite | (Fe2+0.48Mg0.37Ca0.04Na0.04Mn2+0.03Al0.03Cr3+0.01)sum=1.00Si1.00O3 |
| 4.CB.10 | Avicennite | Tl2O3 |
| 4.CB.10 | Bixbyite-(Mn) | Mn3+2O3 |
| 4.CB.10 | Bixbyite-(Fe) | (Fe,Mn)2O3 |
| 4.CB.15 | Armalcolite | (Mg,Fe2+)Ti2O5 |
| 4.CB.15 | Sassite | Ti3+2Ti4+O5 |
| 4.CB.15 | Pseudobrookite | Fe2TiO5 |
| 4.CB.15 | Ferropseudobrookite | Fe2+Ti2O5 |
| 4.CB.15 | Griffinite | Al2TiO5 |
| 4.CB.15 | Pseudobrookite Group | |
| 4.CB.20 | Zincohögbomite-2N2S | [(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2 |
| 4.CB.20 | Zincohögbomite-2N6S | [(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2 |
| 4.CB.20 | Magnesiohögbomite-6N6S | [(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6 |
| 4.CB.20 | Magnesiohögbomite-2N3S | [(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2 |
| 4.CB.20 | Magnesiohögbomite-2N2S | [(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2 |
| 4.CB.20 | Ferrohögbomite-6N12S | [(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6 |
| 4.CB.20 | Magnesiohögbomite-2N4S | (Mg8.43Fe2+1.57)sum=10Al22Ti4+2O46(OH)2 |
| 4.CB.20 | Magnesiobeltrandoite-2N3S | (Mg6Al2)(Al18Fe3+2)O38(OH)2 |
| 4.CB.20 | Zincovelesite-6N6S | Zn3(Fe3+,Mn3+,Al,Ti)8O15(OH) |
| 4.CB.25 | Pseudorutile | Fe2Ti3O9 |
| 4.CB.25 | Kleberite | FeTi6O11(OH)5 |
| 4.CB.30 | Berdesinskiite | V3+2TiO5 |
| 4.CB.30 | Oxyvanite | V3+2V4+O5 |
| 4.CB.30 | Kaitianite | Ti3+2Ti4+O5 |
| 4.CB.35 | Olkhonskite | (Cr,V)2Ti3O9 |
| 4.CB.35 | Schreyerite | V3+2Ti3O9 |
| 4.CB.35 | Machiite | Al2Ti3O9 |
| 4.CB.35 | Vestaite | (Ti4+Fe2+)Ti4+3O9 |
| 4.CB.40 | Kamiokite | Fe2Mo3O8 |
| 4.CB.40 | Nolanite | V3+8Fe3+2O14(OH)2 |
| 4.CB.40 | Rinmanite | Zn2Sb2Mg2Fe4O14(OH)2 |
| 4.CB.40 | Iseite | Mn2Mo3O8 |
| 4.CB.40 | Majindeite | Mg2Mo3O8 |
| 4.CB.40 | Rinmanite-(Zn) | Zn2Sb2(Fe3+4Zn2)O14(OH)2 |
| 4.CB.45 | Stibioclaudetite | AsSbO3 |
| 4.CB.50 | Arsenolite | As2O3 |
| 4.CB.50 | Senarmontite | Sb2O3 |
| 4.CB.55 | Valentinite | Sb2O3 |
| 4.CB.60 | Bismite | Bi2O3 |
| 4.CB.65 | Sphaerobismoite | Bi2O3 |
| 4.CB.70 | Sillénite | Bi12SiO20 |
| 4.CB.75 | Kyzylkumite | V3+Ti2O5(OH) |
| 4.CB.80 | Tietaiyangite | Fe3+4Fe2+TiO9 |
| 4.CB.85 | Liuite | FeTiO3 |
| 4.CB.90 | Luogufengite | Fe2O3 |
| 4.CB.95 | Wangdaodeite | FeTiO3 |
Other Information
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
See:
http://membership.acs.org/c/ccs/pubs/CLIPS/JCE20020023.pdf
Internet Links for Claudetite
mindat.org URL:
https://www.mindat.org/min-1060.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Claudetite
Reference List:
Localities for Claudetite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Hebbard et al. (2017) |
| Museum Victoria Mineralogy Collection |
Brazil | |
| Cassedanne et al. (1982) |
| Cassedanne et al. (1981) |
Chile | |
| Samples analysed by Tony Kampf of LAC ... |
| Oviedo et al. (1991) |
| samples analysed by Jochen Schlüter |
| SEM-EDS by Joy Desor |
China | |
| Zhu et al. (2015) +1 other reference |
Czech Republic | |
| Lapis 2002 (7/8) |
| 86. +1 other reference | |
France | |
| Laurent (1995) |
| Dana 7:I:547. |
Germany | |
| |
| Schnorrer (1993) |
| Lapis (6) |
| Wittern (2001) |
| Wolfgang Stoll |
| John Sobolewski collection |
Greece | |
| Kolitsch et al. (2014) |
| Kanellopoulos et al. (2024) |
Hungary | |
| Szakáll et al. (1996) |
Japan | |
| Matsubara (2001) |
Morocco | |
| Jean-Pierre Barral specimens |
Namibia | |
| Gebhard (1999) |
New Zealand | |
| Quantification and controls on As ... |
North Macedonia | |
| Boev et al. (2001) |
| Färber (n.d.) | |
Papua New Guinea | |
| Pichler et al. (1999) |
Portugal (TL) | |
| Dana 7:I:456 +2 other references |
Romania | |
| Kristály et al. (2009) |
Russia | |
| Kasatkin et al. (2021) |
Slovakia | |
| Szabó J (1888) +1 other reference |
Spain | |
| Calvo Rebollar et al. (2022) |
UK | |
| Golley et al. (1995) |
| Leppington et al. (1998) |
USA | |
| Onac +2 other references |
| Palache (1934) +3 other references |
| claudetite +4 other references |
| Landon (1927) +1 other reference |
| Schooner (circa 1980s) |
| U. S. Geological Survey Open-File ... |
| Gibbs (1985) |
| Roberts et al. (1965) |
| Bullock (1981) |
| Dietrich (1990) |
Quick NavTopAbout ClaudetiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesVarietiesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Imperial County, California, USA