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Sundiusite

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Formula:
Pb10(SO4)O8Cl2
System:
Monoclinic
Colour:
White to colourless
Lustre:
Adamantine
Hardness:
3
Name:
Named by P.J. Dunn and R.S. Rouse in 1979 after Nils Gustaf Sundius (21 May 1886, Banker, Östergötland, Sweden - 6 December 1976, Djursholm, Danderyd, Stockholm County, Sweden), Swedish mineralogist, in recognition of his contributions to the mineralogy of Langban (Sweden). Pronounced sūn'-dē-ūs-ite.

The name was used previously for a hypothetical amphibole, but its use not widely recognized.

Classification of Sundiusite

Approved
Approval Year:
1979
First Published:
1980
3/D.10-130
7.BD.70

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
30.1.1.1

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p>2:1
26.24

26 : Sulphates with Halide

Physical Properties of Sundiusite

Adamantine
Diaphaneity (Transparency):
Translucent
Colour:
White to colourless
Streak:
White
Hardness (Mohs):
3
Tenacity:
Brittle
Cleavage:
Perfect
{100}
Density:
7.0 g/cm3 (Measured)    7.20 g/cm3 (Calculated)

Optical Data of Sundiusite

Type:
Biaxial (+)
RI values:
nα = 2.100 nγ = 2.170
Max Birefringence:
δ = 0.070
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v extreme

Chemical Properties of Sundiusite

Formula:
Pb10(SO4)O8Cl2
Elements listed in formula:

Crystallography of Sundiusite

Crystal System:
Monoclinic
Cell Parameters:
a = 24.67(1) Å, b = 3.781(1) Å, c = 11.881(5) Å
β = 100.07(4)°
Ratio:
a:b:c = 6.525 : 1 : 3.142
Unit Cell Volume:
V 1,091.15 ų (Calculated from Unit Cell)
Comment:
Space group C2/m, C2 or Cm.
X-Ray Powder Diffraction Data:
d-spacingIntensity
6.10 (30)
3.744 (30)
3.101 (60)
3.044 (60)
2.981 (100)
2.737 (80)

Type Occurrence of Sundiusite

General Appearance of Type Material:
Plumose aggregates of overlapping crystals
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1980,580.
Royal Ontario Museum, Toronto, Canada, M36619
Harvard University, 117086.
National Museum of Natural History, Washington, D.C., USA, 134984.

Relationship of Sundiusite to other Species

7.BD.05SulphohaliteNa6(SO4)2FCl
7.BD.05SulfohaliteNa6(SO4)2FCl
7.BD.10GaleiteNa15(SO4)5F4Cl
7.BD.10SchaireriteNa21(SO4)7ClF6
7.BD.15KogarkoiteNa3(SO4)F
7.BD.20CaracoliteNa3Pb2(SO4)3Cl
7.BD.20CesaniteNa3Ca2(SO4)3(OH)
7.BD.20AiolositeNa4Bi(SO4)3Cl
7.BD.25BurkeiteNa6(CO3)(SO4)2
7.BD.30HanksiteNa22K(SO4)9(CO3)2Cl
7.BD.35CannoniteBi2(SO4)O(OH)2
7.BD.40LanarkitePb2(SO4)O
7.BD.45GrandreefitePb2(SO4)F2
7.BD.50ItoitePb3Ge4+(SO4)2O2(OH)2
7.BD.55ChiluiteBi3Te6+Mo6+O10.5
7.BD.60HectorfloresiteNa9(SO4)4(IO3)
7.BD.65PseudograndreefitePb6(SO4)F10
26.1KogarkoiteNa3(SO4)F
26.2SulphohaliteNa6(SO4)2FCl
26.3SchaireriteNa21(SO4)7ClF6
26.4GaleiteNa15(SO4)5F4Cl
26.5ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
26.6ChlorothioniteK2Cu(SO4)Cl2
26.7KamchatkiteKCu3(SO4)2OCl
26.8SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
26.9AubertiteCuAl(SO4)2Cl · 14H2O
26.10Magnesioaubertite(Mg,Cu)Al(SO4)2Cl · 14H2O
26.11Svyazhinite(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O
26.12D'AnsiteNa21Mg(SO4)10Cl3
26.13AnhydrokainiteKMg(SO4)Cl
26.14KainiteKMg(SO4)Cl · 3H2O
26.15Mosesite(Hg2N)(Cl,SO4,MoO4) · H2O
26.16Kleinite(Hg2N)(Cl,SO4) · nH2O
26.17WilcoxiteMgAl(SO4)2F · 17H2O
26.18CreediteCa3SO4Al2F8(OH)2 · 2H2O
26.19LannoniteMg2Ca4Al4(SO4)8F8 · 24H2O
26.20Chukhrovite-(Y)Ca3(Y,Ce)[F|SO4|(AlF6)2] · 10H2O
26.21Chukhrovite-(Ce)Ca3(Ce,Y)[F|SO4|(AlF6)2] · 10H2O
26.22GrandreefitePb2(SO4)F2
26.23PseudograndreefitePb6(SO4)F10
26.25CaracoliteNa3Pb2(SO4)3Cl
26.26MammothitePb6Cu4AlSb5+O2(OH)16Cl4(SO4)2
26.27AtlasoviteK(BiO)Cu6Fe3+(SO4)5O3Cl
26.28XitieshaniteFe3+(SO4)Cl · 6H2O
26.29NabokoiteKCu7(SO4)5(Te4+O3)OCl

Other Names for Sundiusite

Name in Other Languages:
German:Sundiusit
Spanish:Sundiusita

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.

References for Sundiusite

Reference List:
Dunn, P.J., Rouse, R.S. (1980) Sundiusite, a new lead sulfate oxychloride from Långban, Sweden. American Mineralogist: 65: 506-508.

Internet Links for Sundiusite

mindat.org URL:
https://www.mindat.org/min-3828.html
Please feel free to link to this page.

Localities for Sundiusite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Germany
 
  • North Rhine-Westphalia
    • Sauerland
      • Iserlohn
        • Letmathe
Blaß, G. & Graf, H.W. (1993): Neue Funde. Mineralien-Welt, 4 (2), 57-60.; Blaß, G. & Graf, H.W. (1993): Neue Funde. Mineralien-Welt, 4 (2), 57-60.
Sweden (TL)
 
  • Värmland
    • Filipstad
Dunn, P. J. and Rouse, R. S. (1980): Sundiusite, a new lead sulfate oxychloride from Långban, Sweden. American Mineralogist 65, 506-508.; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
UK
 
  • Scotland
    • Dumfries & Galloway
      • Wanlockhead
ex Steve Rust collection specimen now in the Natural History Museum London
Mineral and/or Locality  
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