Sundiusite Mineral Data

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.

Name Pronunciation:

Sundiusite + Pronunciation

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:

Monoclinic Space 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
Ncalc = 1.99 - 2.01

Optical Data:

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

Calculated Properties of Sundiusite

Electron Density:

Bulk Density (Electron Density)=5.88 gm/cc
note: Specific Gravity of Sundiusite =7.20 gm/cc.

Fermion Index:

Fermion Index = 0.19
Boson Index = 0.81

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sundiusite is Not Radioactive

Sundiusite Classification

Dana Class:

30.01.01.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

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

(30.01.01)Dana Group

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

Strunz Class:

07.BD.70 07 - SULFATES (SELENATES, TELLURATES)

07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O

07.BD -With only large cations

07.BD.70 Sundiusite Pb10(SO4)Cl2O8 C 2,Cm,C 2/m Mono

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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Sundiusite

Pb10(SO4)Cl2O8
Dana No: 30.01.01.01 Strunz No: 07.BD.70
Locality:

Notes:

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