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Arsentsumebite

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Big Photo

Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
© Stephan Wolfsried

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Formula:
Pb
 
2
Cu(AsO
 
4
)(SO
 
4
)(OH)
System:MonoclinicColour:Emerald-green, ...
Lustre:VitreousHardness:4 - 5
Member of:Brackebuschite Group
Name:In allusion to the composition, being the ARSENate analogue of TSUMEBITE.


Brackebuschite Group. The arsenate analogue of Tsumebite.

Classification of Arsentsumebite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/B.24-60
Nickel-Strunz 10th (pending) edition ID: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
Dana 7th edition ID:43.4.2.2
Dana 8th edition ID:43.4.2.2

43 : COMPOUND PHOSPHATES, ETC.
4 : Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Hey's CIM Ref.:22.3.16

22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
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Type Occurrence of Arsentsumebite

Type Locality:Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
Place of Conservation of Type Material:Harvard University, Cambridge Massachusetts, USA - #134586.
Year of Discovery:1935
Geological Setting of type material:Oxidised zone of a dolostone-hosted hydrothermal polymetallic deposit.
Associated Minerals at type locality:
SmithsoniteQuartzMimetiteMalachiteDuftite
ConichalciteCerussiteBayldoniteAzurite

Physical Properties of Arsentsumebite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Emerald-green, grass-green, apple-green, pale bluish green.
Comment:Single crystals are generally pale.
Streak:(not reported)
Hardness (Mohs):4 - 5
Tenacity:Brittle
Fracture:Irregular/Uneven
Density (measured):6.46 g/cm3
Density (calculated):6.39 g/cm3

Crystallography of Arsentsumebite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/m {P1 1 21/m} {P21/m} {P1 21/m 1}
Cell Parameters:a = 8.85Å, b = 5.92Å, c = 7.84Å
β = 112.6°
Ratio:a:b:c = 1.495 : 1 : 1.324
Unit Cell Volume:V 379.21 ų (Calculated from Unit Cell)
Morphology:Crystals distorted in aggregates and crusts.
Twinning:Observed, complex.

Optical Data of Arsentsumebite

Type:Biaxial (-)
RI values: nα = 1.970 nβ = 1.992 nγ = 2.011
2V:Measured: 88° , Calculated: 84°
Maximum Birefringence:δ = 0.041

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:strong
Pleochroism:Visible
Comments:X = Pale pistachio-green
Y = Z = Bottle-green

Chemical Properties of Arsentsumebite

Formula:
Pb
 
2
Cu(AsO
 
4
)(SO
 
4
)(OH)
Essential elements:As, Cu, H, O, Pb, S
All elements listed in formula:As, Cu, H, O, Pb, S

Relationship of Arsentsumebite to other Species

Member of:Brackebuschite Group
Other Members of Group:

- +
Arsenbrackebuschite
Pb
 
2
Fe
3+
 
(AsO
 
4
)
 
2
(OH)
Bearthite
Ca
 
2
Al(PO
 
4
)
 
2
(OH)
Brackebuschite
Pb
 
2
(Mn
3+
 
,Fe
3+
 
)(VO
 
4
)
 
2
(OH)
Bushmakinite
Pb
 
2
Al(PO
 
4
)(VO
 
4
)(OH)
Calderónite
Pb
 
2
Fe
3+
 
(VO
 
4
)
 
2
(OH)
Feinglosite
Pb
 
2
(Zn,Fe
2+
 
)(AsO
 
4
)(SO
 
4
)(OH)
Gamagarite
Ba
 
2
(Fe
3+
 
,Mn
3+
 
)(VO
 
4
)
 
2
(OH)
Goedkenite
(Sr,Ca)
 
2
Al(PO
 
4
)
 
2
(OH)
Tokyoite
Ba
 
2
(Mn
3+
 
,Fe
3+
 
)(VO
 
4
)
 
2
(OH)
Tsumebite
Pb
 
2
Cu(PO
 
4
)(SO
 
4
)(OH)
Related Minerals - Nickel-Strunz Grouping):

- +
8.BG.05Bearthite
Ca
 
2
Al(PO
 
4
)
 
2
(OH)
8.BG.05Brackebuschite
Pb
 
2
(Mn
3+
 
,Fe
3+
 
)(VO
 
4
)
 
2
(OH)
8.BG.05Gamagarite
Ba
 
2
(Fe
3+
 
,Mn
3+
 
)(VO
 
4
)
 
2
(OH)
8.BG.05Goedkenite
(Sr,Ca)
 
2
Al(PO
 
4
)
 
2
(OH)
8.BG.05UM1994-19-PO:CuHMoPb
Pb
 
2
Cu(PO
 
4
)(MoO
 
4
,AsO
 
4
,CrO
 
4
,GaO
 
4
)(OH)
8.BG.05Tsumebite
Pb
 
2
Cu(PO
 
4
)(SO
 
4
)(OH)
8.BG.05Arsenbrackebuschite
Pb
 
2
Fe
3+
 
(AsO
 
4
)
 
2
(OH)
8.BG.05Feinglosite
Pb
 
2
(Zn,Fe
2+
 
)(AsO
 
4
)(SO
 
4
)(OH)
8.BG.05Bushmakinite
Pb
 
2
Al(PO
 
4
)(VO
 
4
)(OH)
8.BG.05Tokyoite
Ba
 
2
(Mn
3+
 
,Fe
3+
 
)(VO
 
4
)
 
2
(OH)
8.BG.05Calderónite
Pb
 
2
Fe
3+
 
(VO
 
4
)
 
2
(OH)
8.BG.10Mélonjosephite
CaFe
2+
 
Fe
3+
 
(PO
 
4
)
 
2
(OH)
8.BG.15Tancoite
LiNa
 
2
Al(PO
 
4
)(HPO
 
4
)(OH)
Related Minerals - Hey's Index Grouping:

- +
22.3.1Parnauite
Cu
 
9
(AsO
 
4
)
 
2
(SO
 
4
)(OH)
 
10
 · 7H
 
2
O
22.3.2Ardealite
Ca
 
2
(HPO
 
4
)(SO
 
4
) · 4H
 
2
O
22.3.3Machatschkiite
(Ca,Na)
 
6
(AsO
 
4
)(HAsO
 
4
)
 
3
(PO
 
4
,SO
 
4
) · 15H
 
2
O
22.3.4Clinotyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
,SO
 
4
)
 
4
(OH,O)
 
10
 · 10H
 
2
O
22.3.5Peisleyite
Na
 
3
Al
 
16
(PO
 
4
)
 
10
(SO
 
4
)
 
2
(OH)
 
17
 · 20H
 
2
O
22.3.6Chalcophyllite
Cu
 
18
Al
 
2
(SO
 
4
)
 
3
(AsO
 
4
)
 
3
(OH)
 
27
 · 33H
 
2
O
22.3.7Woodhouseite
CaAl
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
22.3.8Schlossmacherite
(H
 
3
O,Ca)Al
 
3
(SO
 
4
,AsO
 
4
)
 
2
(OH)
 
6
22.3.9Svanbergite
SrAl
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
22.3.10Kemmlitzite
(Sr,Ce)Al
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
22.3.11Sanjuanite
Al
 
2
(PO
 
4
)(SO
 
4
)(OH) · 9H
 
2
O
22.3.12Kribergite
Al
 
5
(PO
 
4
)
 
3
(SO
 
4
)(OH)
 
4
 · 4H
 
2
O
22.3.13Hotsonite
Al
 
11
(SO
 
4
)
 
3
(PO
 
4
)
 
2
(OH)
 
21
 · 16H
 
2
O
22.3.14Weilerite
22.3.15Tsumebite
Pb
 
2
Cu(PO
 
4
)(SO
 
4
)(OH)
22.3.17Hinsdalite
PbAl
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
22.3.18Hidalgoite
PbAl
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
22.3.19Orpheite
22.3.20Coconinoite
Fe
3+
2
Al
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
4
(SO
 
4
)(OH)
 
2
 · 20H
 
2
O
22.3.21Sasaite
(Al,Fe
3+
 
)
 
14
(PO
 
4
)
 
11
(SO
 
4
)(OH)
 
7
 · 83H
 
2
O
22.3.22Tristramite
(Ca,U,Fe)(PO
 
4
,SO
 
4
) · 2H
 
2
O
22.3.23Corkite
PbFe
 
3
(PO
 
4
)(SO
 
4
)(OH)
 
6
22.3.24Beudantite
PbFe
 
3
(AsO
 
4
)(SO
 
4
)(OH)
 
6
22.3.25Diadochite
Fe
3+
2
(PO
 
4
)(SO
 
4
)(OH) · 5H
 
2
O
22.3.26Sarmientite
Fe
3+
2
(AsO
 
4
)(SO
 
4
)(OH) · 5H
 
2
O
22.3.27Bukovskýite
Fe
3+
2
(AsO
 
4
)(SO
 
4
)(OH) · 7H
 
2
O
22.3.28Zýkaite
Fe
3+
4
(AsO
 
4
)
 
3
(SO
 
4
)(OH) · 15H
 
2
O
22.3.29Tooeleite
Fe
3+
6
(As
3+
 
O
 
3
)
 
4
(SO
 
4
)(OH)
 
4
 · 4H
 
2
O
22.3.30Pitticite
(Fe, SO
 
4
, AsO
 
4
, H
 
2
O) ?
22.3.31Xiangjiangite
(Fe
3+
 
,Al)(UO
 
2
)
 
4
(PO
 
4
)
 
2
(SO
 
4
)
 
2
(OH) · 22H
 
2
O

Other Names for Arsentsumebite

Synonyms:
As-Tsumebite
Other Languages:
German:Arsentsumebit
As-Tsumebit
Russian:Арсентсумебит
Spanish:Arsentsumebita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Arsentsumebite

Reference List:

- +
Bulletin de la Société française de Minéralogie (1935): 58: 4.

Bideaux, R. A., Nichols, M. C. and Williams, S. A. (1966): The arsenate analogue of tsumebite, a new mineral. American Mineralogist: 51, 258-259.

Schlüter, J., G. Gebhard, and G. Wappler (1994) Tsumebit oder Arsentsumebit aus Tsumeb? Lapis, 19(10), 31–34, 86 (in German).

Zubkova, N.V., Pushcharovsky, D.Yu., Giester, G., Tillmanns, E., Pekov, I.V., and Kleimenov, D.A. (2002) The crystal structure of arsentsumebite, Pb2Cu[(As,S)O4]2(OH). Mineralogy and Petrology: 75: 79-88.

Internet Links for Arsentsumebite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Arsentsumebite details from Handbook of Mineralogy (PDF)
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    • Specimens:The following Arsentsumebite specimens are currently listed for sale on minfind.com.
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    • Localities for Arsentsumebite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • New South Wales
      • Yancowinna Co.
        • Broken Hill
    		Australian Min. 3:1 (1997)
    • Western Australia
      • Pilbara Region
        • Ashburton Shire
    		[MinRec 24:203]
    Min. Record 24,203-218(1993)
    Australian J. Mineralogy 13(1),31-39(2007)
    Bulgaria
     
    • Sofiya Oblast (Sofia Oblast)
      • Svoge Obshchina
        • Bov
    		Minceva-Stefanova, J. (2001): Arsenate minerals diversity in oxidation zones of the polymetallic stratabound deposits in Western Balkan Mountain. - Compt. rend. Acad. bulg. Sci., 54, 6, 39-42.
    Chile
     
    • Atacama Region
      • Copiapó Province
    		maurizio dini collection - analysed specimens
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Dubí
    		Sejkora, J.: Minerály ložiska Moldava v Krušných horách. Bulletin Mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 110-116.
    France
     
    • Auvergne
      • Allier
        • Ébreuil
          • Échassières
    		Kolitsch, U., Gröbner, J. & Brandstätter, F. (2009): Neufunde von Les Montmins, Allier, Frankreich. Lapis 34 (11), 24-32; 54 (in German).
    • Languedoc-Roussillon
      • Aude
        • Tuchan
          • Padern
    		Favreau, G., Berbain, C. & Meisser, N. (2003): Cyanophyllite et autres minéraux rares de Padern (Aude). Le Cahiers des Micromonteurs, 82(4), 17-23.
    • Provence-Alpes-Côte d'Azur
      • Var
        • Le Pradet
    		http://www.mine-capgaronne.fr/site/Mineraux/ListeMineraux.html
    • Rhône-Alpes
      • Rhône
        • Beaujeu
          • Les Ardillats
    		Favreau G., Legris J-R., Dardillac M. (1996), La Verrière (Rhône): Histoire et Minéralogie, Le Cahier des Micromonteurs, n°3, pp:3-28
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
    • Lower Saxony
      • Harz
        • Clausthal-Zellerfeld
          • Oberschulenberg
    		No reference listed
    • North Rhine-Westphalia
      • Siegerland
        • Müsen
    		Der Aufschluss 2000(2), 71-123
    • Rhineland-Palatinate
      • Lahn valley
    		Wittern: "Mineralfundorte in Deutschland", 2001
    • Thuringia
      • Thuringian Forest
        • Gräfenroda
    		Knoll, H. (2009): Interessante Fundstellen bei Gräfenroda im Thüringer Wald. Mineralien-Welt 20 (2), 50-61.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamariza)
            • Kamariza Mines (Kamareza Mines)
    		No reference listed
    Lapis No.7/8 1999 p.70-74
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		Aufschluss 10 (1975), 369
    Spain
     
    • Andalusia
      • Almería
        • Cuevas del Almanzora (Cuevas de Vera)
          • Sierra Almagrera
            • Jaroso Ravine
    		Georges FAVREAU collection
    UK
     
    • Wales
      • Powys (Radnorshire)
        • Old Radnor
          • Wethel
    		N.Hubbard, et al.: UK J. Mines & Minerals (28), 9-10(2007); Cotterell TF et al (2011) The mineralogy of Dolyhir quarry, Old Radnor. Powys, Wales. UKJMM 32:5-61
    USA
     
    • Arizona
      • Maricopa Co.
        • Big Horn Mts
          • Osborn District
            • Tonopah
              • Belmont Mountain
    		Analyzed by the University of Arizona.
    • California
      • Inyo Co.
        • Inyo Mts (Inyo Range)
          • Manzanar Station area
    		Sugar White collection; Adams, Paul (2010) The Brown Monster and Reward Mines Inyo County, California. Mineralogical Record 41:175-193.
    • Montana
      • Granite Co.
        • Philipsburg District (Flint Creek District)
          • John Long Mts
            • Flint Creek Valley
    		Per. Comm. from Eugene Ford re XRD results Mar. & Apr. 1994
    • Nevada
      • Humboldt Co.
        • Iron Point District
          • Valmy
    		Collected by and in the collection of Brent Thorne and William Wise. Analyzed by XRD.
    • New Mexico
      • Lincoln Co.
        • Red Cloud District
          • Gallinas Mts
    		Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
    • Utah
      • Tooele Co.
        • Deep Creek Mts
          • Gold Hill District (Clifton District)
            • Gold Hill
    		Collected by and in the collection of Brent Thorne. Analyzed by Bill Wise.
    Mineral and/or Locality
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