Mineralogy Database

Sahlinite Mineral Data

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General Sahlinite Information

Help on Chemical  Formula: Chemical Formula: Pb14(AsO4)2O9Cl4
Help on Composition: Composition: Molecular Weight = 3,464.44 gm
   Arsenic    4.33 %  As    6.63 % As2O5
   Lead      83.73 %  Pb   90.20 % PbO
   Chlorine   4.09 %  Cl    4.09 % Cl
               -   %   Cl   -0.92 % -O=Cl2   
   Oxygen     7.85 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb14(AsO4)2O9Cl4
Help on Environment: Environment: Found in dolomite rock with other Mn oxides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1934
Help on Locality: Locality: Langban, Filipstad, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Carl Andreas Sahlin (1861-1943), chemist and manager of the iron works at Laxa, Sweden.
Help on Name Pronunciation: Name Pronunciation: Sahlinite + Pronunciation Say SAHLINITE

Sahlinite Image

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Comments: Light lemon yellow sahlinite on dark hausmannite and white dolomite matrix.
Location: Langban mine, Filipstad, Värmland , Sweden. Scale: Crystal size 1.5cm.
© Tom Loomis / Dakota Matrix

Sahlinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5627:1:0.4999
Help on Cell Dimensions: Cell Dimensions: a = 12.704, b = 22.576, c = 11.287, Z = 4; beta = 118.37° V = 2,848.38 Den(Calc)= 8.08
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.946(1), 3.011(1), 2.814(0.9),

Physical Properties of Sahlinite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Light yellow, Pale sulfur yellow.
Help on Density: Density: 8
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Scaly - Morphology like fish scales.
Help on Habit: Habit: Thin - Flat dimensioned crystals.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: light yellow

Optical Properties of Sahlinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -1.001 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.982 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2847,KPDmeas= 0.2875,KC= 0.1436
Ncalc = 2.15 - 2.16
Help on Optical Data: Optical Data: Biaxial (-), a=3.3

Calculated Properties of Sahlinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.61 gm/cc
note: Specific Gravity of Sahlinite =8.08 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.18
Boson Index = 0.82
Help on Photoelectric: Photoelectric: PESahlinite =1,573.90 barns/electron
U=PESahlinite x rElectron Density=10410.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sahlinite is Not Radioactive

Sahlinite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.01)where (A++)m (XO4)p Zq, with m:p>4:1
  (41.01.04)Dana Group Sahlinite Pb14(AsO4)2O9Cl4 C 2/c 2/m Kombatite Pb14(VO4)2O9Cl4 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 08.BO.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BO -With only large cations, (OH, etc.):RO4 � 1:1
08.BO.20 Kombatite Pb14(VO4)2O9Cl4 C 2/c 2/m
08.BO.20 Sahlinite Pb14(AsO4)2O9Cl4 C 2/c 2/m

Other Sahlinite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8, AmMin v 89, p 471) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Sahlinite :
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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Dana No: Strunz No: 08.BO.20





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