Lammerite Mineral Data

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


General Lammerite Information

Help on Chemical Formula: Chemical Formula: Cu3[(As,P)O4]2
Help on Composition: Composition: Molecular Weight = 446.50 gm
   Copper      42.70 %  Cu   48.07 % Cu2O
   Arsenic     25.17 %  As   38.61 % As2O5
   Phosphorus   3.47 %  P     7.95 % P2O5
   Oxygen      28.67 %  O
              ______        ______ 
              100.00 %       94.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3(AsO4)1.5(PO4)0.5
Help on Environment: Environment: Found on an old mineral specimen.
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Laurani, Oruro, Bolivia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Franz Lammer, mineral collector of Leoben, Austria, who provided the first specimen.
Help on Name Pronunciation: Name Pronunciation: Lammerite + Pronunciation Say LAMMERITE
Help on Synonym: Synonym: ICSD 201733
  PDF 39-385
 

Lammerite Image

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

Lammerite

Comments: Emerald green crystalline lammerite in matrix.
Location: Laurani Mine, South Yeronime, Laurani, La Paz, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Click Here for Larger Lammerite Image in a New Browser Window Images:
Click Here for Larger Lammerite Image

Lammerite

Comments: Deep, lustrous green lammerite crystals to about 1mm throughout vuggy matrix.
Location: Guanaco mine, Taltal, Antofagasta, Chile. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Lammerite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.4373:1:0.4641
Help on Cell Dimensions: Cell Dimensions: a = 5.08, b = 11.616, c = 5.391, Z = 2; beta = 111.71° V = 295.55 Den(Calc)= 5.02
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.89(1), 2.52(0.9), 3.06(0.8),
Click Here for Large Lammerite 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


Hawthorne F C , American Mineralogist , 71 (1986) p.206-209, Lammerite, Cu3(AsO4)2, a modulated close-packed structure

 

Physical Properties of Lammerite

Help on Cleavage: Cleavage: {010} Good, {100} Indistinct
Help on Color: Color: Dark green.
Help on Density: Density: 5.18
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: light green
 

Optical Properties of Lammerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.058 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1843,KPDmeas= 0.1786,KC= 0.1896
Ncalc = 1.95 - 1.98
Help on Optical Data: Optical Data: Biaxial (+), b=1.9, g=1.95, , 2V(Meas)=54.
 

Calculated Properties of Lammerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.68 gm/cc
note: Specific Gravity of Lammerite =5.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001375977
Boson Index = 0.9998624023
Help on Photoelectric: Photoelectric: PELammerite = 36.95 barns/electron
U=PELammerite x rElectron Density= 172.80 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lammerite is Not Radioactive
 

Lammerite Classification
Help on Dana Class: Dana Class: 38.03.09.01 (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.09)Dana Group
 
38.03.09.01 Lammerite Cu3[(As,P)O4]2 P 21/a 2/m
 
38.03.09.02 IMA2009-002! Cu3(AsO4)2 P 21/c 2/m
Help on Strunz Class: Strunz Class: 08.AB.30 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AB -With medium-sized cations
 
08.AB.30 Lammerite Cu3[(As,P)O4]2 P 21/a 2/m
 

Other Lammerite Information
Help on References: References: NAME( AntBidBlaNic5) 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 Lammerite :
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 Lammerite using:

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

Visit our Advertisers for Lammerite :

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

Ask about Lammerite 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 Lammerite Specimen Label here :

Lammerite

Cu3[(As,P)O4]2
Dana No: 38.03.09.01 Strunz No: 08.AB.30
Locality:

 

Notes: