Koenenite Mineral Data

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



[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop


General Koenenite Information

Help on Chemical Formula: Chemical Formula: Na4Mg4Cl12•Mg5Al4(OH)22
Help on Composition: Composition: Molecular Weight = 1,218.22 gm
   Sodium      7.55 %  Na   10.18 % Na2O
   Magnesium  17.96 %  Mg   29.78 % MgO
   Aluminum    8.86 %  Al   16.74 % Al2O3
   Hydrogen    1.82 %  H    16.27 % H2O
   Chlorine   34.92 %  Cl   34.92 % Cl
                -   %   Cl   -7.88 % -O=Cl2   
   Oxygen     28.89 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4Mg9Cl12Al4(OH)22
Help on Environment: Environment: Potash mine.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1902
Help on Locality: Locality: Justus I near Volpriehausen, and elsewhere in Hannover, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Adolf von Koenen (1837-1915), German geologist of Gottingen, who first found the mineral.
Help on Name Pronunciation: Name Pronunciation: Koenenite + Pronunciation Say KOENENITE
Help on Synonym: Synonym: ICSD 22305/6
  PDF 43-684
 

Koenenite Image

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

Koenenite

Comments: Koenenite with cleavage planes.
Location: Bergmannssegen-Hugo Mine, Lehrte, near Hanover, Lower Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Koenenite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.94009
Help on Cell Dimensions: Cell Dimensions: a = 34.72, c = 32.64, Z = 33; V = 34,075.35 Den(Calc)= 1.96
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): 3.5(1), 2.34(0.5), 2.85(0.5),
Click Here for Large Koenenite 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


Allmann R , Lohse H N , Hellner E , Zeitschrift fur Kristallographie , 126 (1968) p.7-22, Die kristallstruktur des koenenits, eine doppelschichtstruktur mit zwei, inkommensurablen teilgittern, Note: one of two substructures in koenenite

 

Physical Properties of Koenenite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Colorless, Light yellow, Dark red.
Help on Density: Density: 1.98
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luster: Luster: Pearly
Help on Streak: Streak: white
 

Optical Properties of Koenenite

Help on Optical Data: Optical Data: Uniaxial (+), w=1.52, e=1.55, bire=0.0300.
 

Calculated Properties of Koenenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.95 gm/cc
note: Specific Gravity of Koenenite =1.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKoenenite = 3.06 barns/electron
U=PEKoenenite x rElectron Density= 5.96 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Koenenite is Not Radioactive
 

Koenenite Classification
Help on Dana Class: Dana Class: 10.06.02.01 (10)Oxyhalides and Hydroxyhalides
  (10.06)where Am Bn (O,OH)p Xq
  (10.06.02)Dana Group
 
10.06.02.01 Koenenite Na4Mg4Cl12•Mg5Al4(OH)22 R 3m 3 2/m
Help on Strunz Class: Strunz Class: 03.BD.25 03 - HALIDES
  03.B - Simple Halides, with H2O
  03.BD -Simple Halides with H2O and additional OH
 
03.BD.25 Koenenite Na4Mg4Cl12•Mg5Al4(OH)22 R 3m 3 2/m
 

Other Koenenite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Koenenite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Koenenite using:

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

Visit our Advertisers for Koenenite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Koenenite Mineral Data :

Ask about Koenenite 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 Koenenite Specimen Label here :

Koenenite

Na4Mg4Cl12•Mg5Al4(OH)22
Dana No: 10.06.02.01 Strunz No: 03.BD.25
Locality:

 

Notes: