Mineralogy Database

Ammonioleucite Mineral Data

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General Ammonioleucite Information

Help on Chemical  Formula: Chemical Formula: (NH4,K)AlSi2O6
Help on Composition: Composition: Molecular Weight = 202.45 gm
   Potassium   4.83 %  K     5.82 % K2O
   Aluminum   13.33 %  Al   25.18 % Al2O3
   Silicon    27.75 %  Si   59.36 % SiO2
   Hydrogen    1.49 %  H      -   % Calc as (NH4)2O
   Nitrogen    5.19 %  N     9.65 % (NH4)2O
   Oxygen     47.42 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)0.75K0.25AlSi2O6
Help on Environment: Environment: In veinlets, fractures, and cavities in hydrothermally altered crystalline schist, as powdery pseudomorphous replacements of analcime crystals.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: In the Tatarazawa quarry, Fujioka, Gumma Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For "ammonia" in its chemical composition and its relation to "leucite."
Help on Name Pronunciation: Name Pronunciation: Ammonioleucite + Pronunciation Say AMMONIOLEUCITE
Help on Synonym: Synonym: ICSD 54162
  PDF 40-474

Ammonioleucite Image

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Comments: White powdery ammonioleucite associated with colorless analcime.
Location: Tatarazawa Quarry, Fujioka Gunma Prefecture, Hunho Island, Japan. Scale: See Image.
© Rruff Database

Ammonioleucite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.03776
Help on Cell Dimensions: Cell Dimensions: a = 13.214, c = 13.713, Z = 16; V = 2,394.42 Den(Calc)= 2.25
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.43(1), 3.3(0.8), 5.53(0.5),

Physical Properties of Ammonioleucite

Help on Color: Color: White.
Help on Density: Density: 2.29
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: white

Optical Properties of Ammonioleucite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.21 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.231 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2302,KPDmeas= 0.2262,KC= 0.187
Ncalc = 1.42 - 1.43
Help on Optical Data: Optical Data: Uniaxial (+), w=1.518, e=1.518, bire=0.0000.

Calculated Properties of Ammonioleucite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.31 gm/cc
note: Specific Gravity of Ammonioleucite =2.29 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEAmmonioleucite = 1.93 barns/electron
U=PEAmmonioleucite x relectron= 4.46 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 70.20 (Gamma Ray American Petroleum Institute Units)
Concentration of Ammonioleucite per GRapi unit = 1.42 (%)

Estimated Radioactivity from Ammonioleucite - barely detectable


Ammonioleucite Classification

Help on  Dana Class: Dana Class: (76)Tectosilicate Al-Si Framework
  (76.02)Feldspathoids and related species
  (76.02.02)Leucite group Leucite KAlSi2O6 I 41/a 4/m Ammonioleucite (NH4,K)AlSi2O6 I 41/a 4/m
Help on  Strunz Class: Strunz Class: 09.GB.05 09 - SILICATES (Germanates)
  09.G - Tektosilicates with Zeolitic H2O
  09.GB -Chains of single connected 4-membered rings
09.GB.05 Ammonioleucite (NH4,K)AlSi2O6 I 41/a 4/m
09.GB.05 Analcime NaAlSi2O6•(H2O) P1 1
09.GB.05 Hsianghualite Ca3Li2Be3(SiO4)3F2 I 213 2 3
09.GB.05 Lithosite K6Al4Si8O25•(H2O) P 21 (pseudo ORTH) 2
09.GB.05 Leucite KAlSi2O6 I 41/a 4/m
09.GB.05 Pollucite (Cs,Na)2Al2Si4O12•(H2O) I a3d 4/m 3 2/m
09.GB.05 Wairakite CaAl2Si4O12•2(H2O) I2/a 2/m

Other Ammonioleucite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.71,p1022-1027,1986) OPTIC PROP.(Am.Min.,Vol.71,p1022-1027,1986)
Help on See Also: See Also: Links to other databases for Ammonioleucite :
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

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Dana No: Strunz No: 09.GB.05





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