Ammonioleucite Mineral Data (original) (raw)

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

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

Click Here for Larger Ammonioleucite Image Ammonioleucite 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 - DipyramidalH-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),

Click Here for Large Ammonioleucite Structure Window Crystal Structure:

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| | Yamada M , Miyawaki R , Nakai I , Izumi F , Nagashima K , Mineralogical Journal , 20 (1998) p.105-112, A Rietveld analysis of the crystal structure of ammonioleucite | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

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:

76.02.02.02 (76)Tectosilicate Al-Si Framework

(76.02)Feldspathoids and related species

(76.02.02)Leucite group

76.02.02.01 Leucite KAlSi2O6 I 41/a 4/m

76.02.02.02 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
15 - WWW-MINCRYST

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

Ammonioleucite

(NH4,K)AlSi2O6
Dana No: 76.02.02.02 Strunz No: 09.GB.05
Locality:

Notes: