Sahlinite Mineral Data

General Sahlinite Information

Chemical Formula:

Pb14(AsO4)2O9Cl4

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

Empirical Formula:

Pb₁₄(AsO₄)₂O₉Cl₄

Environment:

Found in dolomite rock with other Mn oxides.

IMA Status:

Valid Species (Pre-IMA) 1934

Locality:

Langban, Filipstad, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Carl Andreas Sahlin (1861-1943), chemist and manager of the iron works at Laxa, Sweden.

Name Pronunciation:

Sahlinite + Pronunciation

Sahlinite Image

Images:

Sahlinite

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

Axial Ratios:

a:b:c =0.5627:1:0.4999

Cell Dimensions:

a = 12.704, b = 22.576, c = 11.287, Z = 4; beta = 118.37° V = 2,848.38 Den(Calc)= 8.08

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/I_o): 2.946(1), 3.011(1), 2.814(0.9),

Physical Properties of Sahlinite

Cleavage:

{010} Perfect

Color:

Light yellow, Pale sulfur yellow.

Density:

Diaphaneity:

Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Scaly - Morphology like fish scales.

Habit:

Thin - Flat dimensioned crystals.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Adamantine

Streak:

light yellow

Optical Properties of Sahlinite

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

Optical Data:

Biaxial (-), a=3.3

Calculated Properties of Sahlinite

Electron Density:

Bulk Density (Electron Density)=6.61 gm/cc
note: Specific Gravity of Sahlinite =8.08 gm/cc.

Fermion Index:

Fermion Index = 0.18
Boson Index = 0.82

Photoelectric:

PE_Sahlinite=1,573.90 barns/electron
U=PE_Sahlinite x rElectron Density=10410.27 barns/cc.

Radioactivity:

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

Sahlinite Classification

Dana Class:

41.01.04.01 (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

41.01.04.01 Sahlinite Pb14(AsO4)2O9Cl4 C 2/c 2/m

41.01.04.02 Kombatite Pb14(VO4)2O9Cl4 C 2/c 2/m

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

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin v 89, p 471) OPTIC PROP.(Dana8)

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

Sahlinite

Pb14(AsO4)2O9Cl4
Dana No: 41.01.04.01 Strunz No: 08.BO.20
Locality:

Notes:

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