Mayenite Mineral Data

Mayenite Mineral Data +

[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee

General Mayenite Information

Chemical Formula:

Ca12Al14O33

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

Empirical Formula:

Ca₁₂Al₁₄O₃₃

IMA Status:

Approved IMA 1964

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 6287

PDF 9-413

Search for Mayenite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Mayenite Crystallography

Cell Dimensions:

a = 11.982, Z = 2; V = 1,720.24 Den(Calc)= 2.68

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43d

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.68(1), 4.89(0.95), 2.45(0.5),

Physical Properties of Mayenite

Color:

Colorless.

Density:

2.85

Diaphaniety:

Transparent

Streak:

white

Optical Properties of Mayenite

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

Optical Data:

Isotropic, n=1.643.

Calculated Properties of Mayenite

Electron Density:

r_electron=2.82 gm/cc
note: r_Mayenite=2.85 gm/cc.

Fermion Index

Fermion Index = 0.00065
Boson Index = 0.99935

Photoelectric:

PE_Mayenite= 5.07 barns/electron
U=PE_Mayenite x r_electron= 14.30 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Mayenite is Not Radioactive

Mayenite Classification

Dana Class:

7.11.3.1 (7)Multiple Oxides

(7.11)as titano-oxides with [4] and [6] substitutions

(7.11.3)Dana Group

7.11.3.1 Mayenite Ca12Al14O33 I 43d 4 3m

Strunz Class:

IV/A.07-30 IV - Oxides

IV/A - Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO)

IV/A.07 - Periclase Group, Brownmillerite - Mayenite series

IV/A.07-10 Brownmillerite Ca2(Al,Fe)2O5 Ibmm 2/m 2/m 2/m

IV/A.07-20 Srebrodolskite Ca2Fe2O5 P nma 2/m 2/m 2/m

IV/A.07-30 Mayenite Ca12Al14O33 I 43d 4 3m

Other Mayenite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Mayenite :
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 -École des Mines de Paris

Search for Mayenite using:

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

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

Translate Mayenite Mineral Data :

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 Español

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

Mayenite

Ca12Al14O33
Dana No: 7.11.3.1 Strunz No: IV/A.07-30
Locality:

Notes: