Mayenite Mineral Data

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


General Mayenite Information

Help on Chemical Formula: Chemical Formula: Ca12Al14O33
Help on Composition: Composition: Molecular Weight = 1,386.66 gm
   Calcium   34.68 %  Ca   48.53 % CaO
   Aluminum  27.24 %  Al   51.47 % Al2O3
   Oxygen    38.08 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca12Al14O33
Help on Environment: Environment: Thermally metaborphosed inclusions of marly limestone in effusive volcanic rocks. Common component of portland cement clinker.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Ettringer, Bellerberg, Mayen, Eifel, Rhineland-Pfalz, Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality
Help on Name Pronunciation: Name Pronunciation: Mayenite Say MAYENITE
Help on Synonym: Synonym: Achtarandite - pseudomorph, probably after mayenite.
  ICSD 6287
  PDF 9-413
 

Mayenite Image

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

Mayenite

Comments: Gray mayenite grains in matrix.
Location: Bellerberg, Eifel, Germany. Scale: Picture size 1 mm.
© Diederik Visser

Mayenite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 11.982, Z = 2; V = 1,720.24 Den(Calc)= 2.68
Help on Crystal System: Crystal System: Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43d
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.89(1), 2.68(1), 2.45(0.5),3(0.5), 2.19(0.4), 1.6(0.3), 1.66(0.3), 1.95(0.3),
Click Here for Large Mayenite 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


Bussem W , Eitel A , Zeitschrift fur Kristallographie , 95 (1936) p.175-188, Die struktur des pentacalciumtrialuminats

 

Physical Properties of Mayenite

Help on Color: Color: Colorless.
Help on Density: Density: 2.85
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Streak: Streak: white
 

Optical Properties of Mayenite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.082 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.151 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2399,KPDmeas= 0.2256,KC= 0.2085
Ncalc = 1.56 - 1.59
Help on Optical Data: Optical Data: Isotropic, n=1.643.
 

Calculated Properties of Mayenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.82 gm/cc
note: Specific Gravity of Mayenite =2.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0006509855
Boson Index = 0.9993490145
Help on Photoelectric: Photoelectric: PEMayenite = 5.07 barns/electron
U=PEMayenite x rElectron Density= 14.30 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mayenite is Not Radioactive
 

Mayenite Classification
Help on Dana Class: Dana Class: 07.11.03.01 (07)Multiple Oxides
  (07.11)as titano-oxides with [4] and [6] substitutions
  (07.11.03)Dana Group
 
07.11.03.01 Mayenite Ca12Al14O33 I 43d 4 3m
Help on Strunz Class: Strunz Class: 04.CC.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CC -With large and medium-sized cations
 
04.CC.20 Mayenite Ca12Al14O33 I 43d 4 3m
 

Other Mayenite Information
Help on References: References: NAME( Dana8) 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 Mayenite :
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 Mayenite using:

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

Visit our Advertisers for Mayenite :

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

Ask about Mayenite 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 Mayenite Specimen Label here :

Mayenite

Ca12Al14O33
Dana No: 07.11.03.01 Strunz No: 04.CC.20
Locality:

 

Notes: