Mazzite-Mg Mineral Data

Mazzite-Mg Mineral Data
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General Mazzite-Mg Information

Help on Chemical Formula: Chemical Formula: K2CaMg2(Al,Si)36O72•28(H2O)
Help on Composition: Composition: Molecular Weight = 2,808.04 gm
   Potassium   2.65 %  K     3.19 % K2O
   Calcium     2.00 %  Ca    2.80 % CaO
   Magnesium   1.73 %  Mg    2.87 % MgO
   Aluminum    9.42 %  Al   17.79 % Al2O3
   Silicon    26.50 %  Si   56.70 % SiO2
   Hydrogen    1.87 %  H    16.68 % H2O
   Oxygen     55.84 %  O
             ______        ______ 
             100.00 %      100.03 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.9Ca1.4Mg2Si26.5Al9.8O72•26(H2O)
Help on Environment: Environment: In cavities in a porphyritic olivine basalt. Renamed from mazzite to massite-Mg with the publication of mazzite-Na.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: On Mont Semiol (Mont Semiouse), near Montbrison, Loire, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Prof. Fiorenzo Mazzi, mineralogist, University of Pavia, Pavia, Italy.
Help on Name Pronunciation: Name Pronunciation: Mazzite-Mg Say MAZZITE-MG
 

Mazzite-Mg Image

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Mazzite-Mg

Comments: Clear colorless microcrystals and crystalline mazzite in vug.
Location: Mont Simiol, Loire, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mazzite-Mg Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.41572
Help on Cell Dimensions: Cell Dimensions: a = 18.392, c = 7.646, Z = 1; V = 2,239.87 Den(Calc)= 2.08
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.941(1), 3.185(1), 3.824(0.94),
 

Physical Properties of Mazzite-Mg

Help on Color: Color: Colorless, White.
Help on Density: Density: 2.108
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Mazzite-Mg

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.054 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2416,KPDmeas= 0.2384,KC= 0.2293
Ncalc = 1.48
Help on Optical Data: Optical Data: Uniaxial (-), e=1.499, w=1.5062, bire=0.0072.
 

Calculated Properties of Mazzite-Mg

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.14 gm/cc
note: Specific Gravity of Mazzite-Mg =2.11 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEMazzite-Mg = 1.87 barns/electron
U=PEMazzite-Mg x relectron= 4.00 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 38.69 (Gamma Ray American Petroleum Institute Units)
Concentration of Mazzite-Mg per GRapi unit = 2.58 (%)

Estimated Radioactivity from Mazzite-Mg - barely detectable

 

Mazzite-Mg Classification
Help on Dana Class: Dana Class: 77.01.03.10 (77)Tectosilicate Zeolite group
  (77.01)true zeolites
  (77.01.03)Gismondine and related species
 
77.01.03.01 Gismondine Ca2Al4Si4O16•9(H2O) P 21/c 2/m
 
77.01.03.02 Amicite K2Na2Al4Si4O16•5(H2O) I2 2
 
77.01.03.03 Garronite Na2Ca5Al12Si20O64•27(H2O) I 41/a 4/m
 
77.01.03.04 Gobbinsite (Na2,Ca)2K2Al6Si10O32•12(H2O) P mn21 mm2
 
77.01.03.05 Harmotome (Ba,Na,K)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.06 Phillipsite-Na (Na,K,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.06a Phillipsite-Ca! (Ca,K,Na)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.06b Phillipsite-K! (K,Na,Ca)1-2(Si,Al)8O16•6(H2O) P 21/m 2/m
 
77.01.03.08 Perlialite K8Tl4Al12Si24O72•20(H2O) P 6/mmm 6/m 2/m 2/m
 
77.01.03.09 Paulingite-K (K2,Ca,Na2,Ba)5Al10Si35O90•45(H2O) Im3m 4/m 3 2/m
 
77.01.03.09a Paulingite-Na! (Na2,K2,Ca,Ba)5Al10Si35O90•45(H2O) Im3m 4/m 3 2/m
 
77.01.03.09b Paulingite-Ca! (Ca,K,Na,Ba)5[Al10Si35O84]•34(H2O) Im3m 4/m 3 2/m
 
77.01.03.10 Mazzite-Mg K2CaMg2(Al,Si)36O72•28(H2O) P 63/mmc 6/m 2/m 2/m
 
77.01.03.10a Mazzite-Na! Na8Al8Si28O72•30H2O P 63/mmc 6/m 2/m 2/m
 
77.01.03.11 Merlinoite (K,Ca,Na,Ba)7Si23Al9O64•23(H2O) I mmm 2/m 2/m 2/m
 
77.01.03.12 Montesommaite (K,Na)9Al9Si23O64•10(H2O) F dd2 mm2
Help on Strunz Class: Strunz Class: 09.GC.20 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GC -Chains of doubly-connected 4-membered rings
 
09.GC.20 Mazzite-Mg K2CaMg2(Al,Si)36O72•28(H2O) P 63/mmc 6/m 2/m 2/m
 
09.GC.20 Mazzite-Na! Na8Al8Si28O72•30H2O P 63/mmc 6/m 2/m 2/m
 

Other Mazzite-Mg Information
Help on References: References: NAME( AntBidBlaNic2) 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 Mazzite-Mg :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Mazzite-Mg Specimen Label here :

Mazzite-Mg

K2CaMg2(Al,Si)36O72•28(H2O)
Dana No: 77.01.03.10 Strunz No: 09.GC.20
Locality:

 

Notes: