Mineralogy Database

Lanarkite Mineral Data

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General Lanarkite Information

Help on Chemical  Formula: Chemical Formula: Pb2(SO4)O
Help on Composition: Composition: Molecular Weight = 526.46 gm
   Lead    78.71 %  Pb   84.79 % PbO
   Sulfur   6.09 %  S    15.21 % SO3
   Oxygen  15.20 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb2(SO4)O
Help on Environment: Environment: Secondary mineral developed in galena ores.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1832
Help on Locality: Locality: Susanna Mine, Leadhills, Lanarkshire, Scotland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality
Help on Name Pronunciation: Name Pronunciation: Lanarkite + Pronunciation Say LANARKITE
Help on Synonym: Synonym: ICSD 29268
  PDF 33-1486

Lanarkite Image

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Comments: White, acicular spray of lanarkite on matrix.
Location: Meadowfoot smelter, Wanlockhead, Lanarkshire, Scotland. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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Comments: Cleaved crystals of greenish beige lanakite on matrix.
Location: Leadhills, Scotland. Scale: Picture size 2 cm.
© Dave Barthelmy

Lanarkite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.4131:1:1.2404
Help on Cell Dimensions: Cell Dimensions: a = 13.746, b = 5.6964, c = 7.066, Z = 4; beta = 115.79° V = 498.18 Den(Calc)= 7.02
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.3426(1), 2.9614(0.8), 2.848(0.45),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 1 1) ( 1 1 0) ( 2 0 1) ( 4 0 1) ( 2 0 1) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Lanarkite

Help on Cleavage: Cleavage: {201} Perfect, {401} Indistinct, {201} Indistinct
Help on Color: Color: Greenish white, Gray, Gray white, Yellow, Light yellow.
Help on Density: Density: 6.92
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Long UV=yellow.
Help on Luster: Luster: Adamantine - Resinous
Help on Streak: Streak: white

Optical Properties of Lanarkite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1411,KPDmeas= 0.1431,KC= 0.1397
Ncalc = 1.97 - 1.98
Help on Optical Data: Optical Data: Biaxial (-), a=1.928, b=2.007, g=2.036, bire=0.1080
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.

Calculated Properties of Lanarkite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.87 gm/cc
note: Specific Gravity of Lanarkite =7.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.17
Boson Index = 0.83
Help on Photoelectric: Photoelectric: PELanarkite =1,446.22 barns/electron
U=PELanarkite x rElectron Density=8,485.07 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lanarkite is Not Radioactive

Lanarkite Classification

Help on  Dana Class: Dana Class: (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.02)where (A B)2 XO4 Zq
  (30.02.01)Dana Group Lanarkite Pb2(SO4)O C 2/m 2/m
Help on  Strunz Class: Strunz Class: 07.BD.40 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BD -With only large cations
07.BD.40 Lanarkite Pb2(SO4)O C 2/m 2/m

Other Lanarkite Information

Help on See Also: See Also: Links to other databases for Lanarkite :
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: 07.BD.40





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