Scotlandite Mineral Data

General Scotlandite Information

Chemical Formula:

PbSO3

Composition:

Molecular Weight = 287.26 gm

Lead 72.13 % Pb 77.70 % PbO

Sulfur 11.16 % S 22.30 % SO₂

Oxygen 16.71 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbSO₃

Environment:

In cavities in massive barite.

IMA Status:

Approved IMA 1984

Locality:

Leadhills, Scotland. Link to MinDat.org Location Data.

Name Origin:

Named for the country of origin.

Name Pronunciation:

Scotlandite + Pronunciation

Synonym:

ICSD 30993

PDF 38-409

Scotlandite Image

Images:

Scotlandite

Comments: Radiating group of colorless spear-head shaped prismatic crystals of scotlandite.
Location: Lady Anne Hopetoun shaft. Leadhills, Lanarkshire, Scotland. Scale: See Image.
© Rruff Database

Scotlandite Crystallography

Axial Ratios:

a:b:c =0.8447:1:1.201

Cell Dimensions:

a = 4.505, b = 5.333, c = 6.405, Z = 2; beta = 106.23° V = 147.75 Den(Calc)= 6.46

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/m

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

By Intensity(I/I_o): 3.99(1), 3.25(0.8), 3.38(0.7),

Physical Properties of Scotlandite

Cleavage:

{100} Perfect, {010} Good

Color:

Colorless, Gray white, Light yellow.

Density:

6.37

Habit:

Fan Shaped - Occurs as radiating crystals shaped like a fan.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2 - Gypsum

Luster:

Adamantine

Streak:

white

Optical Properties of Scotlandite

Gladstone-Dale:

CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1631,KPDmeas= 0.1654,KC= 0.1618
Ncalc = 2.03 - 2.05

Optical Data:

Biaxial (+), a=2.035, b=2.04, g=2.085, bire=0.0500, 2V(Calc)=38, 2V(Meas)=35. Dispersion r < v strong.

Calculated Properties of Scotlandite

Electron Density:

Bulk Density (Electron Density)=5.49 gm/cc
note: Specific Gravity of Scotlandite =6.46 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

PE_Scotlandite=1,304.34 barns/electron
U=PE_Scotlandite x rElectron Density=7,156.98 barns/cc.

Radioactivity:

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

Scotlandite Classification

Dana Class:

34.01.01.02 (34)Selenites - Tellurites - Sulfites

(34.01)as A++ XO3

(34.01.01)Dana Group

34.01.01.01 Molybdomenite PbSeO3 P 2₁/m 2/m

34.01.01.02 Scotlandite PbSO3 P 2/m 2/m

Strunz Class:

04.JE.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.J - Arsenites, Antimonites, Bismuthites, Sulfites,

04.JE -Sulfites

04.JE.20 Scotlandite PbSO3 P 2/m 2/m

Other Scotlandite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Scotlandite :
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
15 - WWW-MINCRYST

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

Scotlandite

PbSO3
Dana No: 34.01.01.02 Strunz No: 04.JE.20
Locality:

Notes:

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