Sundiusite Mineral Data

Sundiusite Mineral Data +

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General Sundiusite Information

Chemical Formula:

Pb10(SO4)Cl2O8

Composition:

Molecular Weight = 2,366.96 gm

Lead 87.54 % Pb 94.30 % PbO

Sulfur 1.35 % S 3.38 % SO₃

Chlorine 3.00 % Cl 3.00 % Cl

- % Cl -0.68 % -O=Cl₂

Oxygen 8.11 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₁₀(SO₄)Cl₂O₈

IMA Status:

Approved IMA 1980

Locality:

Amerika stope, Langban, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Nils Sundius (1886-1976), Swedish mineralogist.

Sundiusite Image

Images:

Sundiusite

Comments: Clear to white platy crystals to 1mm covering Hausmannite matrix.
Location: Langban, Varmland, Sweden. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Sundiusite Crystallography

Axial Ratios:

a:b:c =6.5247:1:3.1422

Cell Dimensions:

a = 24.67, b = 3.781, c = 11.881, Z = 2; beta = 100.07° V = 1,091.15 Den(Calc)= 7.20

Crystal System:

MonoclinicSpace Group: C 2,Cm,C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.981(1), 2.737(0.8), 3.1(0.6),

Physical Properties of Sundiusite

Cleavage:

[100] Perfect

Color:

Colorless, White.

Density:

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Plumose - "Mica-like" minerals forming aggregates of plume-like forms.

Hardness:

3 - Calcite

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Streak:

white

Optical Properties of Sundiusite

Gladstone-Dale:

CI meas= -0.151 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.119 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1576,KPDmeas= 0.1621,KC= 0.1409

Optical Data:

Biaxial (+), a=2.1, g=2.17, bire=0.0700

Calculated Properties of Sundiusite

Electron Density:

r_electron=5.88 gm/cc
note: r_Sundiusite=7.20 gm/cc.

Fermion Index

Fermion Index = 0.1936
Boson Index = 0.8064

Photoelectric:

PE_Sundiusite=1,646.66 barns/electron
U=PE_Sundiusite x r_electron=9,677.26 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sundiusite is Not Radioactive

Sundiusite Classification

Dana Class:

30.1.1.1 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.1)where (A B)m (XO4)p Zq where m:p>2:1

(30.1.1)Dana Group

30.1.1.1 Sundiusite Pb10(SO4)Cl2O8 C 2,Cm,C 2/m Mono

Strunz Class:

III/D.11-40 III - Halogenides

III/D - Oxi-halogenides with Pb - Bi - Sb and related compounds

III/D.11 - Mendipite - Onoratoite series

III/D.11-10 Mendipite Pb3Cl2O2 P 2₁2₁2₁ 2 2 2

III/D.11-15 Damaraite Pb3O2(OH)Cl Pmc2 mm2

III/D.11-17 Chubutite* Pb7O6Cl2 Unk Ortho

III/D.11-20 Penfieldite Pb2Cl3(OH) P 6/mmm 6/m 2/m 2/m

III/D.11-30 Blixite Pb2Cl(O,OH)2 Unk Ortho

III/D.11-35 Mereheadite! Pb2O(OH)Cl C 2/c 2/m

III/D.11-40 Sundiusite Pb10(SO4)Cl2O8 C 2,Cm,C 2/m Mono

III/D.11-50 Asisite Pb12(SiO4)O8Cl4 I 4/mmm 4/m 2/m 2/m

III/D.11-55 Parkinsonite (Pb,Mo,[])8O8Cl2 I 4/mmm 4/m 2/m 2/m

III/D.11-60 Thorikosite Pb3(Sb,As)O3(OH)Cl2 I 4/mmm 4/m 2/m 2/m

III/D.11-65 Philolithite! Pb12O6Mn(Mg,Mn)2(Mn,Mg)4(SO4)(CO3)4Cl4(OH)12 P 4₁/nnm 4/m 2/m 2/m

III/D.11-70 Pinalite Pb3(WO4)OCl2 Amam 2/m 2/m 2/m

III/D.11-80 Nadorite PbSbO2Cl Bmmb 2/m 2/m 2/m

III/D.11-90 Perite PbBiO2Cl Bmmb 2/m 2/m 2/m

III/D.11-100 Heliophyllite Pb6As2O7Cl4 Unk Ortho

III/D.11-110 Ecdemite Pb6As2O7Cl4 Unk Tetra

III/D.11-120 Onoratoite Sb8O11Cl2 C 2/m 2/m

Other Sundiusite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Sundiusite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Print or Cut-and-Paste your Sundiusite Specimen Label here :

Sundiusite

Pb10(SO4)Cl2O8
Dana No: 30.1.1.1 Strunz No: III/D.11-40
Locality:

Notes: