Lawrencite  Mineral Data

Lawrencite Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Lawrencite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Ni)Cl2
Help on Composition: Composition: Molecular Weight = 127.46 gm
   Iron      32.86 %  Fe   42.27 % FeO
   Nickel    11.51 %  Ni   14.65 % NiO
   Chlorine  55.63 %  Cl   55.63 % Cl
               -   %  Cl  -12.55 % -O=Cl2   
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.75Ni0.25Cl2
Help on Environment: Environment: Terrestrial alteration of meteoritic iron.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1877
Help on Locality: Locality: Tazewell, Ovifak, Canyon Diablo, and other iron meteorites. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for John Lawrence Smith (1818-1883), American chemist, mineralogist, and student of meteorites, who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Lawrencite + Pronunciation Say LAWRENCITE
Help on Synonym: Synonym: ICSD 4059
  PDF 1-1106
 

Lawrencite Image

Click Here for Larger Lawrencite Image in a New Browser Window Images:
Click Here for Larger Lawrencite Image

Lawrencite

Comments: Capillary tube of lawrencite solution with opaque oxidized precipates, derived from hydrosocpically absorbing water from the air by solid lawrencite, collected from an oozing meteorite.
Location: Nantan meteorites (Nandan meteorites), Lihu - Yaochai area, Nandan Co., Hechi Prefecture, Guangxi Zhuang Autonomous Region, China. Scale: Tube Width 0.25 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Lawrencite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.89727
Help on Cell Dimensions: Cell Dimensions: a = 3.5775, c = 17.52, Z = 3; V = 194.19 Den(Calc)= 3.27
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.54(1), 1.8(0.63), 5.9(0.63),
Click Here for Large Lawrencite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Wyckoff R W G , Crystal Structures , 1 (1963) p.239-444, Second edition. Interscience Publishers, New York, New York, Note: cadmium chloride structure

 

Physical Properties of Lawrencite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Greenish brown, White.
Help on Density: Density: 3.162
Help on Diaphaneity: Diaphaneity: Transparent
 

Optical Properties of Lawrencite

Help on Optical Data: Optical Data: Uniaxial (-), e=1.576, w=1.576, bire=0.0000.
 

Calculated Properties of Lawrencite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.10 gm/cc
note: Specific Gravity of Lawrencite =3.27 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0082672251
Boson Index = 0.9917327749
Help on Photoelectric: Photoelectric: PELawrencite = 18.47 barns/electron
U=PELawrencite x rElectron Density= 57.33 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lawrencite is Not Radioactive
 

Lawrencite Classification

Help on  Dana Class: Dana Class: 09.02.03.01 (09)Anhydrous and Hydrated Halides
  (09.02)where A (X)2
  (09.02.03)Dana Group
 
09.02.03.01 Lawrencite (Fe,Ni)Cl2 R 3m 3 2/m
 
09.02.03.02 Scacchite MnCl2 R 3m 3 2/m
 
09.02.03.03 Chloromagnesite* MgCl2 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 03.AB.20 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AB -M:X = 1:2
 
03.AB.20 Chloromagnesite* MgCl2 R 3m 3 2/m
 
03.AB.20 Lawrencite (Fe,Ni)Cl2 R 3m 3 2/m
 
03.AB.20 Scacchite MnCl2 R 3m 3 2/m
 

Other Lawrencite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lawrencite :
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

Search for Lawrencite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Lawrencite :

A Bijoux Google Search for Lawrencite
Adam's Minerals Google Search for Lawrencite
Cape Minerals Google Search for Lawrencite
Dakota Matrix Minerals Google Search for Lawrencite
Excalibur Mineral Corp. Google Search for Lawrencite
Exceptional Minerals Google Search for Lawrencite
John Betts Fine Minerals Search for Lawrencite
McDougall Minerals Google Search for Lawrencite
Mineral News Website Link
Rock and Mineral Shows Google Search for Lawrencite
Weinrich Minerals, Inc. Google Search for Lawrencite

Ask about Lawrencite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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

Lawrencite

(Fe++,Ni)Cl2
Dana No: 09.02.03.01 Strunz No: 03.AB.20
Locality:

 

Notes: