Leiteite Mineral Data + Say LEITEITE


[Mineral Specimens] [Our best] [Rare specimens] [Latest updates] [Home Page]
Fine Minerals, Moldavites, Jewellery, Meteorites and Fossils
Rockshop.cz is based in Prague, Czech republic

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 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 Diaphaniety: Diaphaniety: 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
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:

relectron=3.95 gm/cc
note: rLeiteite =4.31 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.00971
Boson Index = 0.99029
Help on Photoelectric: Photoelectric:

PELeiteite = 50.04 barns/electron
U=PELeiteite x relectron= 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: 45.1.7.1 (45)Acid and normal Antimonites, Arsenites and Phosphites
  (45.1)with miscellaneous formulae
  (45.1.7)Dana Group
 
45.1.7.1 Leiteite ZnAs2O4 P 21/c 2/m
Help on  Strunz Class: Strunz Class: IV/J.10-20 IV - Oxides
  IV/J - Arsenides with [As2O4]2- groups
  IV/J.10 - Manganarsite - Leiteite series
 
IV/J.10-10 Manganarsite Mn3As204(OH)4 P 312 ? 3 2
 
IV/J.10-20 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

Search for Leiteite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Leiteite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Leiteite Mineral Data :

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 Español

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

Leiteite

ZnAs+++2O4
Dana No: 45.1.7.1 Strunz No: IV/J.10-20
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links