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Arsentsumebite
A valid IMA mineral species - grandfathered
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About Arsentsumebite
Formula:
Pb2Cu(AsO4)(SO4)(OH)
Colour:
Emerald-green, grass-green, apple-green, pale bluish green.
Lustre:
Vitreous
Hardness:
4 - 5
Specific Gravity:
6.46
Crystal System:
Monoclinic
Member of:
Name:
Named by L. Vesignie in 1958 in allusion to the composition, being the ARSENate analogue of TSUMEBITE.
Unique Identifiers
Mindat ID:
372
Long-form identifier:
mindat:1:1:372:0
IMA Classification of Arsentsumebite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Pb2+2Cu2+(As5+O4)(S6+O4)(OH)
Classification of Arsentsumebite
8.BG.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
Dana 7th ed.:
43.4.2.2
43.4.2.2
43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
22.3.16
22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
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 |
|---|---|---|
| Atsu | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Arsentsumebite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Debbie Woolf | United Kingdom |
Physical Properties of Arsentsumebite
Vitreous
Transparency:
Translucent
Colour:
Emerald-green, grass-green, apple-green, pale bluish green.
Comment:
Single crystals are generally pale.
Streak:
(not reported)
Hardness:
4 - 5 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
6.46 g/cm3 (Measured) 6.39 g/cm3 (Calculated)
Optical Data of Arsentsumebite
Type:
Biaxial (-)
RI values:
nα = 1.97 nβ = 1.992 nγ = 2.011
2V:
Measured: 88° , Calculated: 84°
Max. Birefringence:
δ = 0.041
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:
strong
Pleochroism:
Visible
Comments:
X = Pale pistachio-green
Y = Z = Bottle-green
Y = Z = Bottle-green
Chemistry of Arsentsumebite
Mindat Formula:
Pb2Cu(AsO4)(SO4)(OH)
Element Weights:
Crystallography of Arsentsumebite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 8.85 Å, b = 5.92 Å, c = 7.84 Å
β = 112.6°
β = 112.6°
Ratio:
a:b:c = 1.495 : 1 : 1.324
Unit Cell V:
379.21 ų (Calculated from Unit Cell)
Morphology:
Crystals distorted in aggregates and crusts.
Twinning:
Observed, complex.
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
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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
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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) |
|---|---|---|---|---|---|---|---|
| 0014646 | Arsentsumebite | Zubkova N V, Pushcharovsky D Y, Giester G, Tillmanns E, Pekov I V, Kleimenov D A (2002) The crystal structure of arsentsumebite, Pb2Cu[(As,S)O4]2(OH) Mineralogy and Petrology 75 79-88 | 2002 | oxidation zone of the Berezovskoye gold deposit, Middle Urals, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.25 Å | (100) |
| 4.80 Å | (65) |
| 2.76 Å | (60) |
| 3.64 Å | (46) |
| 2.96 Å | (40) |
| 3.01 Å | (32) |
| 2.094 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Arsentsumebite
General Appearance of Type Material:
distorted crystals, up to 2 mm, forming aggregates and crusts
Place of Conservation of Type Material:
Harvard University, Cambridge Massachusetts, USA - #134586.
Geological Setting of Type Material:
Oxidised zone of a dolostone-hosted hydrothermal polymetallic deposit.
Associated Minerals at Type Locality:
Synonyms of Arsentsumebite
Other Language Names for Arsentsumebite
Dutch:Arsentsumebiet
French:Arséntsumebite
German:Arsentsumebit
As-Tsumebit
As-Tsumebit
Norwegian:Arsentsumebitt
Russian:Арсентсумебит
Spanish:Arsentsumebita
Relationship of Arsentsumebite to other Species
Member of:
Other Members of Brackebuschite Supergroup:
| Aldomarinoite | Sr2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Arsenbrackebuschite | Pb2Fe3+(AsO4)2(OH) | Mon. 2/m : P2/c |
| Bearthite | Ca2Al(PO4)2(OH) | Mon. 2/m : P21/m |
| Brackebuschite | Pb2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Bushmakinite | Pb2Al(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
| Calderónite | Pb2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Canosioite | Ba2Fe3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Feinglosite | Pb2Zn(AsO4)2 · H2O | Mon. 2/m |
| Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
| Gamagarite | Ba2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Goedkenite | Sr2Al(PO4)2(OH) | Mon. 2/m : P21/m |
| Grandaite | Sr2Al(AsO4)2(OH) | Mon. 2/m : P21/m |
| Lombardoite | Ba2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Tokyoite | Ba2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Tsumebite | Pb2Cu(PO4)(SO4)(OH) | Mon. 2/m : P21/m |
| 'Unnamed (possible ordered As-analogue of Tokyoite)' | Ba2Mn[(As,V)O4]2(OH) | Mon. 2/m : P21/m |
Forms a series with:
Common Associates
Associations Based on Photo Data:
| 172 photos of Arsentsumebite associated with Azurite | Cu3(CO3)2(OH)2 |
| 50 photos of Arsentsumebite associated with Malachite | Cu2(CO3)(OH)2 |
| 43 photos of Arsentsumebite associated with Cerussite | PbCO3 |
| 25 photos of Arsentsumebite associated with Bayldonite | PbCu3(AsO4)2(OH)2 |
| 20 photos of Arsentsumebite associated with Anglesite | PbSO4 |
| 14 photos of Arsentsumebite associated with Quartz | SiO2 |
| 14 photos of Arsentsumebite associated with Mimetite | Pb5(AsO4)3Cl |
| 14 photos of Arsentsumebite associated with Duftite | PbCu(AsO4)(OH) |
| 10 photos of Arsentsumebite associated with Beudantite | PbFe3+3(AsO4)(SO4)(OH)6 |
| 6 photos of Arsentsumebite associated with Brochantite | Cu4(SO4)(OH)6 |
Related Minerals - Strunz-mindat Grouping
| 8.BG. | Aldomarinoite | Sr2Mn3+(AsO4)2(OH) |
| 8.BG. | Dongchuanite | Pb4ZnZn2(PO4)4(OH)2 |
| 8.BG. | Cuprodongchuanite | Pb4CuZn2(PO4)4(OH)2 |
| 8.BG. | Canosioite | Ba2Fe3+(AsO4)2(OH) |
| 8.BG.05 | Feinglosite | Pb2Zn(AsO4)2 · H2O |
| 8.BG.05 | Tokyoite | Ba2Mn3+(VO4)2(OH) |
| 8.BG.05 | Lombardoite | Ba2Mn3+(AsO4)2(OH) |
| 8.BG.05 | Bearthite | Ca2Al(PO4)2(OH) |
| 8.BG.05 | 'Unnamed (possible ordered As-analogue of Tokyoite)' | Ba2Mn[(As,V)O4]2(OH) |
| 8.BG.05 | Gamagarite | Ba2Fe3+(VO4)2(OH) |
| 8.BG.05 | 'UM1994-19-PO:CuHMoPb' | Pb2Cu(PO4)(MoO4,AsO4,CrO4,GaO4)(OH) |
| 8.BG.05 | Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) |
| 8.BG.05 | Arsenbrackebuschite | Pb2Fe3+(AsO4)2(OH) |
| 8.BG.05 | Goedkenite | Sr2Al(PO4)2(OH) |
| 8.BG.05 | Tsumebite | Pb2Cu(PO4)(SO4)(OH) |
| 8.BG.05 | Brackebuschite | Pb2Mn3+(VO4)2(OH) |
| 8.BG.05 | Bushmakinite | Pb2Al(PO4)(VO4)(OH) |
| 8.BG.05 | Calderónite | Pb2Fe3+(VO4)2(OH) |
| 8.BG.10 | Mélonjosephite | CaFe2+Fe3+(PO4)2(OH) |
| 8.BG.15 | Tancoite | LiNa2Al(PO4)(PO3OH)(OH) |
| 8.BG.20 | Dmisokolovite | K3Cu5AlO2(AsO4)4 |
| 8.BG.25 | Shchurovskyite | K2CaCu6O2(AsO4)4 |
| 8.BG.30 | Wrightite | K2Al2O(AsO4)2 |
| 8.BG.35 | Polyarsite | Na7CaMgCu2(AsO4)4F2Cl |
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 Arsentsumebite
mindat.org URL:
https://www.mindat.org/min-372.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Arsentsumebite
Reference List:
Zubkova, N. V., Pushcharovsky, D. Yu., Giester, G., Tillmanns, E. (2000) The crystal structure of arsentsumebite, Pb2Cu[(As,S)O4)]2(OH) Acta Crystallographica Section A Foundations of Crystallography, 56. doi:10.1107/s0108767300027549
Localities for Arsentsumebite
Showing 46 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 | |
| Birch et al. (1997) |
| Nickel et al. (1993) +1 other reference |
| Australian J. Mineralogy 13 (1) | |
| Nickel et al. (1993) | |
Austria | |
| Schachinger et al. (2014) |
| Schachinger et al. (2014) |
Bulgaria | |
| Minceva-Stefanova (2001) |
Chile | |
| T. Kampf analysis |
| Maurizio Dini collection - analysed ... |
China | |
| Nikischer et al. (2025) |
Czech Republic | |
| Sejkora (1994) +1 other reference |
France | |
| Kolitsch et al. (2009) |
| Favreau G. et al. (1996) |
| Favreau et al. (2003) |
| www.mine-capgaronne.fr (2003) +1 other reference |
Germany | |
| Walenta (1992) |
| Blaß et al. (1996) |
| Der Aufschluss 2000 (2) |
| Wittern (2001) |
| Knoll (2009) |
Greece | |
| |
| Grosch et al. (12/2021) +2 other references | |
| Uwe Kolitsch and Branko Rieck (unpubl. SEM-EDS results) |
Italy | |
| Giarduz et al. (2018) |
| Collezione di Vittorio Rosa +1 other reference |
| Daniel Lorenz |
| Batacchi et al. (2013) |
| A.Costantini (2015) | |
Namibia (TL) | |
| Bideaux et al. (1966) +2 other references |
Poland | |
| Macioch et al. (2018) |
South Africa | |
| Costin et al. (2014) |
Spain | |
| Calvo (2015) +1 other reference |
| Jean Claude Dol |
| Calvo Rebollar et al. (2022) |
| Calvo (2015) |
UK | |
| Bridges et al. (2011) |
| Hubbard et al. (2007) +1 other reference |
USA | |
| Nikischer (2022) |
| Analyzed by the University of Arizona. |
| Sugar White collection +1 other reference |
| Ford (1994) |
| Collected by and in the collection of ... |
| Anthony et al. (2000) |
| Collected by and in the collection of ... |
| Thorne (n.d.) | |
| Thorne (n.d.) |
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Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia