Mineralogy Database

Koechlinite Mineral Data

Search Webmineral :

General Koechlinite Information

Help on Chemical  Formula: Chemical Formula: Bi2MoO6
Help on Composition: Composition: Molecular Weight = 609.90 gm
   Bismuth     68.53 %  Bi   76.40 % Bi2O3
   Molybdenum  15.73 %  Mo   23.60 % MoO3
   Oxygen      15.74 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi2MoO6
Help on Environment: Environment: In cavities in vein material composed of quartz, bismuth, and smaltite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1914
Help on Locality: Locality: Daniel mine, Schneeberg, Sazony, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Rudolf Koechlin (1862-1939), Austrian mineralogist.
Help on Name Pronunciation: Name Pronunciation: Koechlinite + Pronunciation Say KOECHLINITE
Help on Synonym: Synonym: ICSD 17070
  PDF 21-102

Koechlinite Image

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


Comments: Greenish yellow crystal of koechlinite on quartz.
Location: Adam Heber Mine, Neust├Ądtel, Schneeberg district, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Koechlinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3393:1:0.3381
Help on Cell Dimensions: Cell Dimensions: a = 5.502, b = 16.213, c = 5.483, Z = 4; V = 489.11 Den(Calc)= 8.28
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mca
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.15(1), 1.652(0.2), 2.741(0.18),
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: ( 0 1 0) ( 0 2 1) ( 1 3 1) ( 0 0 1)

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


Physical Properties of Koechlinite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Greenish yellow, Yellow, White.
Help on Density: Density: 8.26
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow white

Optical Properties of Koechlinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.121 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.118 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1932,KPDmeas= 0.1937,KC= 0.1728
Ncalc = 2.43
Help on Optical Data: Optical Data: Biaxial (-), a=2.52, b=2.61, g=2.67, bire=0.1500, 2V(Calc)=76, 2V(Meas)=large. Dispersion r < v strong.

Calculated Properties of Koechlinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.95 gm/cc
note: Specific Gravity of Koechlinite =8.28 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEKoechlinite =1,342.38 barns/electron
U=PEKoechlinite x rElectron Density=9,330.81 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Koechlinite is Not Radioactive

Koechlinite Classification

Help on  Dana Class: Dana Class: (48)Anhydrous Molybdates and Tungstates
  (48.02)where (A)2 XO4
  (48.02.02)Dana Group Koechlinite Bi2MoO6 C mca 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DE.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DE -With medium-sized cations; with various polyhedra
04.DE.15 Koechlinite Bi2MoO6 C mca 2/m 2/m 2/m
04.DE.15 Russellite Bi2WO6 P ca21 mm2
04.DE.15 Tungstibite Sb2O3•WO3 P 22121 2 2 2

Other Koechlinite 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 Koechlinite :
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

Search for Koechlinite using:

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

Visit our Advertisers for Koechlinite :

Ask about Koechlinite 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 Espa´┐Żol

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


Dana No: Strunz No: 04.DE.15





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.