Leiteite Mineral Data

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


General Leiteite Information

Help on Chemical Formula: Chemical Formula: ZnAs+++2O4
Help on Composition: Composition: Molecular Weight = 279.23 gm
   Zinc     23.42 %  Zn   29.15 % ZnO
   Arsenic  53.66 %  As   70.85 % As2O3
   Oxygen   22.92 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: ZnAs2O4
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Tsumeb, Namibia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Luis Texeira-Leite (1942-), Portuguese mineral dealer who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Leiteite Say LEITEITE
Help on Synonym: Synonym: ICSD 202249
  PDF 29-740
 

Leiteite Image

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

Leiteite

Comments: Specimen of leiteite with inclusions of ludlockite. This Leiteite specimen varies from 1 to 3.5 mm in thickness.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: 3.7 x 1.3 cm.
© John Veevaert

Leiteite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.9044:1:3.5039
Help on Cell Dimensions: Cell Dimensions: a = 4.542, b = 5.022, c = 17.597, Z = 4; beta = 90.81° V = 401.35 Den(Calc)= 4.62
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.133(1), 3.163(0.76), 1.685(0.49),
Click Here for Large Leiteite 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


Ghose S , Sen Gupta P K , Schlemper E O , American Mineralogist , 72 (1987) p.629-632, Leiteite, ZnAs2O4: A novel type of tetrahedral layer structure with arsenite, chains

 

Physical Properties of Leiteite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Brown, Colorless, Pearl white.
Help on Density: Density: 4.31
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Pearly
Help on Streak: Streak: white
 

Optical Properties of Leiteite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.073 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.197,KPDmeas= 0.2111,KC= 0.2126
Ncalc = 1.92 - 1.98
Help on Optical Data: Optical Data: Biaxial (+), a=1.87, b=1.88, g=1.98, bire=0.1100, 2V(Calc)=38, 2V(Meas)=27. Dispersion r < v very strong.
 

Calculated Properties of Leiteite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.95 gm/cc
note: Specific Gravity of Leiteite =4.31 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0097113529
Boson Index = 0.9902886471
Help on Photoelectric: Photoelectric: PELeiteite = 50.04 barns/electron
U=PELeiteite x rElectron Density= 197.72 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Leiteite is Not Radioactive
 

Leiteite Classification
Help on Dana Class: Dana Class: 45.01.07.01 (45)Acid and normal Antimonites, Arsenites and Phosphites
  (45.01)with miscellaneous formulae
  (45.01.07)Dana Group
 
45.01.07.01 Leiteite ZnAs2O4 P 21/c 2/m
Help on Strunz Class: Strunz Class: 04.JA.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JA -Arsenites, antimonites, bismuthites; without additional anions, without H2O
 
04.JA.05 Leiteite ZnAs2O4 P 21/c 2/m
 

Other Leiteite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Leiteite :
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 Leiteite using:

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

Visit our Advertisers for Leiteite :

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

Ask about Leiteite 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 Leiteite Specimen Label here :

Leiteite

ZnAs+++2O4
Dana No: 45.01.07.01 Strunz No: 04.JA.05
Locality:

 

Notes: