Arsendescloizite
A valid IMA mineral species
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About Arsendescloizite
Alfred Des Cloizeaux
Formula:
PbZn(AsO4)(OH)
Colour:
Pale yellow to deep green, greyish brown
Lustre:
Sub-Vitreous
Hardness:
4
Specific Gravity:
6.57 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named by Paul Keller and Pete J. Dunn in 1982 for being the arsenate analog of descloizite.
Unique Identifiers
Mindat ID:
356
Long-form identifier:
mindat:1:1:356:2
IMA Classification of Arsendescloizite
Classification of Arsendescloizite
8.BH.35
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
Dana 7th ed.:
41.5.1.9
41.5.1.9
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
20.5.6
20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb
20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb
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 for Standard |
|---|---|---|
| Adcz | 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 Arsendescloizite
Sub-Vitreous
Transparency:
Transparent
Colour:
Pale yellow to deep green, greyish brown
Comment:
Colour depending on impurity contents, especially Cu.
Streak:
White
Hardness:
4 on Mohs scale
Density:
6.57 g/cm3 (Calculated)
Optical Data of Arsendescloizite
Type:
Biaxial (-)
RI values:
nα = 1.990 nβ = 2.030 nγ = 2.035
2V:
Measured: 30° , Calculated: 38°
Birefringence:
0.045
Max. Birefringence:
δ = 0.045
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
r > v
Optical Extinction:
XYZ = bac
Pleochroism:
Non-pleochroic
Chemistry of Arsendescloizite
Mindat Formula:
PbZn(AsO4)(OH)
Element Weights:
Crystallography of Arsendescloizite
Crystal System:
Orthorhombic
Class (H-M):
222 - Disphenoidal
Space Group:
P212121
Setting:
P212121
Cell Parameters:
a = 6.075 Å, b = 9.358 Å, c = 7.634 Å
Ratio:
a:b:c = 0.649 : 1 : 0.816
Unit Cell V:
433.99 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Platy to wedge-shaped crystals. Platy {100} to 1 mm; also with {101}. {110}, {100}, {111}.
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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View
CIF File Best | x | y | z | a | b | c
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Rotation
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Labels
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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) |
|---|---|---|---|---|---|---|---|
| 0014924 | Arsendescloizite | Keller P, Lissner F, Schleid T (2003) The crystal structure of arsendescloizite, PbZn(OH)[AsO4], from Tsumeb (Namibia) Neues Jahrbuch fur Mineralogie, Monatshefte 2003 374-384 | 2003 | Tsumeb, Namibia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.23 Å | (60) |
| 3.23 Å | (100) |
| 2.88 Å | (100) |
| 2.60 Å | (80) |
| 2.09 Å | (60) |
| 1.656 Å | (60) |
| 1.559 Å | (80) |
Comments:
ICDD 35-668
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Arsendescloizite
Place of Conservation of Type Material:
Institut für Mineralogie und Kristallchemie, Stuttgart, Germany, number NM 08.
National Museum of Natural History, Washington, D.C., USA, number 148303.
Archiv der Universität Stuttgart, Stuttgart, Germany, number TM-79.30-B76.
National Museum of Natural History, Washington, D.C., USA, number 148303.
Archiv der Universität Stuttgart, Stuttgart, Germany, number TM-79.30-B76.
Geological Setting of Type Material:
Oxidized zone of a polymetallic ore arsenic-bearing sulfide deposit
Associated Minerals at Type Locality:
Synonyms of Arsendescloizite
Other Language Names for Arsendescloizite
Dutch:Arsendescloiziet
French:Arsendescloizite
German:Arsendescloizit
Norwegian:Arsendescloizitt
Russian:Арсендеклуазит
Spanish:Arsendescloizita
Relationship of Arsendescloizite to other Species
Member of:
Other Members of Adelite-Descloizite Group:
| Adelite | CaMg(AsO4)(OH) | Orth. 222 : P212121 |
| Austinite | CaZn(AsO4)(OH) | Orth. 222 : P212121 |
| Čechite | PbFe2+(VO4)(OH) | Orth. mmm(2/m2/m2/m) |
| Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 222 : P212121 |
| Conichalcite | CaCu(AsO4)(OH) | Orth. 222 : P212121 |
| Descloizite | PbZn(VO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnma |
| Duftite | PbCu(AsO4)(OH) | Orth. 222 : P212121 |
| 'Duftite-alpha' | PbCu(AsO4)(OH) | |
| Gottlobite | CaMg(VO4)(OH) | Orth. 222 : P212121 |
| Hermannroseite | CaCu(PO4)(OH) | Orth. 222 : P212121 |
| Mottramite | PbCu(VO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnma |
| Nickelaustinite | CaNi(AsO4)(OH) | Orth. 222 : P212121 |
| Plumbogottlobite | PbMg(VO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnma |
| Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm(2/m2/m2/m) : Pnma |
| Tangeite | CaCu(VO4)(OH) | Orth. 222 : P212121 |
| 'Unnamed (Pb-analogue of Nickelaustinite)' | PbNi(AsO4)(OH) | |
| Vuagnatite | CaAl(SiO4)(OH) | Orth. 222 : P212121 |
Common Associates
Associations Based on Photo Data:
| 20 photos of Arsendescloizite associated with Mimetite | Pb5(AsO4)3Cl |
| 15 photos of Arsendescloizite associated with Calcite | CaCO3 |
| 5 photos of Arsendescloizite associated with 'Copper-bearing Austinite' | Ca(Zn,Cu)(AsO4)(OH) |
| 5 photos of Arsendescloizite associated with 'Copper-bearing Adamite' | (Zn,Cu)2AsO4OH |
| 4 photos of Arsendescloizite associated with Conichalcite | CaCu(AsO4)(OH) |
| 4 photos of Arsendescloizite associated with Hemimorphite | Zn4Si2O7(OH)2 · H2O |
| 3 photos of Arsendescloizite associated with Vanadinite | Pb5(VO4)3Cl |
| 2 photos of Arsendescloizite associated with Ojuelaite | ZnFe3+2(AsO4)2(OH)2 · 4H2O |
| 2 photos of Arsendescloizite associated with Descloizite | PbZn(VO4)(OH) |
| 2 photos of Arsendescloizite associated with Acanthite | Ag2S |
Related Minerals - Strunz-mindat Grouping
| 8.BH. | Peterchinite | Zn3Zn2(OH)6As[O3(OH)3] |
| 8.BH. | Reznitskyite | CaMg(VO4)F |
| 8.BH. | Plumbogottlobite | PbMg(VO4)(OH) |
| 8.BH. | Cuprozheshengite | Pb4CuZn2(AsO4)2(PO4)2(OH)2 |
| 8.BH. | Zheshengite | Pb4ZnZn2(AsO4)2(PO4)2(OH)2 |
| 8.BH. | Crimsonite | PbFe3+2(PO4)2(OH)2 |
| 8.BH.05 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 |
| 8.BH.10 | Panasqueiraite | CaMg(PO4)(OH) |
| 8.BH.10 | Isokite | CaMg(PO4)F |
| 8.BH.10 | Lacroixite | NaAl(PO4)F |
| 8.BH.10 | Arsenatrotitanite | NaTi(AsO4)O |
| 8.BH.10 | Maxwellite | NaFe3+(AsO4)F |
| 8.BH.10 | Durangite | NaAl(AsO4)F |
| 8.BH.10 | Kononovite | NaMg(SO4)F |
| 8.BH.15 | Drugmanite | Pb2Fe3+(PO4)(PO3OH)(OH)2 |
| 8.BH.20 | Nigelcookite | PbFe2+2V3+2(PO4)3(OH)3 |
| 8.BH.20 | Plumbojohntomaite | PbFe2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Cirrolite | Ca3Al2(PO4)3(OH)3 (?) |
| 8.BH.20 | Penikisite | Ba(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3 |
| 8.BH.20 | Perloffite | Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Bjarebyite Group | |
| 8.BH.20 | Strontioperloffite | SrMn2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Plumboperloffite | PbMn2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Johntomaite | BaFe2+2Fe3+2(PO4)3(OH)3 |
| 8.BH.20 | Bjarebyite | (Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3 |
| 8.BH.20 | Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 |
| 8.BH.25 | Bertossaite | Li2CaAl4(PO4)4(OH)4 |
| 8.BH.25 | Natropalermoite | Na2SrAl4(PO4)4(OH)4 |
| 8.BH.25 | Palermoite | Li2SrAl4(PO4)4(OH)4 |
| 8.BH.30 | Sewardite | CaFe3+2(AsO4)2(OH)2 |
| 8.BH.30 | Carminite | PbFe3+2(AsO4)2(OH)2 |
| 8.BH.35 | Adelite | CaMg(AsO4)(OH) |
| 8.BH.35 | Duftite | PbCu(AsO4)(OH) |
| 8.BH.35 | Cobaltaustinite | CaCo(AsO4)(OH) |
| 8.BH.35 | Nickelaustinite | CaNi(AsO4)(OH) |
| 8.BH.35 | Gabrielsonite | PbFe3+(As3+O3)O |
| 8.BH.35 | Conichalcite | CaCu(AsO4)(OH) |
| 8.BH.35 | 'Duftite-alpha' | PbCu(AsO4)(OH) |
| 8.BH.35 | Gottlobite | CaMg(VO4)(OH) |
| 8.BH.35 | Austinite | CaZn(AsO4)(OH) |
| 8.BH.35 | Hermannroseite | CaCu(PO4)(OH) |
| 8.BH.35 | Tangeite | CaCu(VO4)(OH) |
| 8.BH.40 | Čechite | PbFe2+(VO4)(OH) |
| 8.BH.40 | Khorixasite | (Bi0.67◻0.33)Cu(VO4)(OH) |
| 8.BH.40 | Mottramite | PbCu(VO4)(OH) |
| 8.BH.40 | Descloizite | PbZn(VO4)(OH) |
| 8.BH.40 | Pyrobelonite | PbMn2+(VO4)(OH) |
| 8.BH.45 | Bayldonite | PbCu3(AsO4)2(OH)2 |
| 8.BH.45 | Vésigniéite | BaCu3(VO4)2(OH)2 |
| 8.BH.50 | Paganoite | NiBi(AsO4)O |
| 8.BH.55 | Jagowerite | BaAl2(PO4)2(OH)2 |
| 8.BH.55 | Harrisonite | Ca(Fe2+,Mg)6(PO4)2(SiO4)2 |
| 8.BH.60 | Attakolite | CaMn2+Al4(SiO3OH)(PO4)3(OH)4 |
| 8.BH.65 | Leningradite | PbCu3(VO4)2Cl |
| 8.BH.70 | Katiarsite | KTiO(AsO4) |
| 8.BH.70 | Yurgensonite | K2SnTiO2(AsO4)2 |
| 8.BH.75 | Melanarsite | K3Cu7Fe3+O4(AsO4)4 |
| 8.BH.80 | Evseevite | Na2Mg(AsO4)F |
| 8.BH.80 | Moraskoite | Na2Mg(PO4)F |
| 8.BH.85 | Piccoliite | NaCaMn3+2(AsO4)2O(OH) |
Fluorescence of Arsendescloizite
Not fluorescent.
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.
Internet Links for Arsendescloizite
mindat.org URL:
https://www.mindat.org/min-356.html
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References for Arsendescloizite
Reference List:
Dunn, Pete J., Keller, Paul (1982) Arsendescloizite, a new mineral from Tsumeb [Namibia]. The Mineralogical Record, 13 (3) 155-157
Localities for Arsendescloizite
Showing 34 localities.
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 | |
| Confirmed by Peter Elliot |
Austria | |
| Auer et al. (2015) +1 other reference |
| Bernhard Kutil Collection |
| Poeverlein +1 other reference |
China | |
| Baoqin Zhao (1985) |
| Shen (n.d.) |
| Shen (n.d.) |
| Sun et al. (2024) | |
Germany | |
| EDS and SXRD-analyzed by Joy Desor. +1 other reference |
| Walenta (1989) +1 other reference |
| Wittern (2001) |
Greece | |
| Schnorrer (1995) +1 other reference |
| |
| Rieck (1999) | |
| |
Indonesia | |
| Scotney et al. (2005) |
Italy | |
| Bortolozzi et al. (2021) |
Japan | |
| Kato et al. (1993) +1 other reference |
Mexico | |
| University of Arizona analysis |
| Wilson (1989) +1 other reference |
| Moore et al. (2003) | |
Namibia (TL) | |
| Dunn et al. (1982) +1 other reference |
Portugal | |
| Ko Jansen collection |
| collection Ko Jansen +1 other reference | |
Slovakia | |
| Radková P. et al. (2019) |
Switzerland | |
| EDXS analyses +1 other reference |
| Cannon et al. (2008) | |
UK | |
| - (2006) |
USA | |
| Collected by and in the collection of ... |
| Min News 21:7 p 1 |
| Rocks & Minerals Vol. 74 No. 6 Nov/Dec ... |
| Tony Nickischer (2015, #1) |
| Castor et al. (2004) |
| ... |
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Red Bird Mine, Antelope Springs Mining District, Pershing County, Nevada, USA