Zunyite Mineral Data

General Zunyite Information

Chemical Formula: Al13Si5O20(OH,F)18Cl Composition: Molecular Weight = 1,156.74 gm    Aluminum  30.32 %  Al   57.29 % Al₂O₃    Silicon   12.14 %  Si   25.97 % SiO₂    Hydrogen   1.39 %  H    12.46 % H₂O    Chlorine   3.06 %  Cl    3.06 % Cl                -   %   Cl   -0.69 % -O=Cl₂       Oxygen    49.79 %  O    Fluorine   3.28 %  F     3.28 % F                -   %   F    -1.38 % -O=F₂                 ______        ______              100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: Al₁₃Si₅O₂₀(OH)₁₆F₂Cl Environment: Metamorphosed highly aluminous shales IMA Status: Valid Species (Pre-IMA) 1884 Locality: Zuni mine, Anvil Mountain, Silverton, San Juan County, Colorado, USA. Link to MinDat.org Location Data. Name Origin: Named for the locality. Name Pronunciation: Zunyite Synonym: ICSD 32549   PDF 46-1393  

Zunyite Image

Images:

Zunyite Comments: Octahedral crystals of zunyite to 5 mm on matrix. Location: Quartzsite, Arizona. Scale: 5+ cm. © John Veevaert

Zunyite Crystallography

Cell Dimensions: a = 13.925, Z = 4; V = 2,700.14 Den(Calc)= 2.85 Crystal System: Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: F43m X Ray Diffraction: By Intensity(I/I_o): 4.21(1), 8.07(1), 2.68(0.9), Crystal Structure:

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Louisnathan S J , Gibbs G V , American Mineralogist , 57 (1972) p.1089-1108, Aluminium-silicon distribution in zunyite

 

Physical Properties of Zunyite

Cleavage: {111} Good Color: Colorless, Gray white, Pink, Reddish white. Density: 2.88 Diaphaneity: Transparent Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals. Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals. Hardness: 7 - Quartz Luminescence: Non-fluorescent. Luster: Vitreous (Glassy) Magnetism: Nonmagnetic Streak: white  

Optical Properties of Zunyite

Gladstone-Dale: CI meas= 0.079 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.069 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2105,KPDmeas= 0.2083,KC= 0.2262
Ncalc = 1.64 - 1.65 Optical Data: Isotropic, n=1.6.  

Calculated Properties of Zunyite

Electron Density: Bulk Density (Electron Density)=2.85 gm/cc
note: Specific Gravity of Zunyite =2.85 gm/cc.
Fermion Index: Fermion Index = 0.0059104365
Boson Index = 0.9940895635 Photoelectric: PE_Zunyite = 1.59 barns/electron
U=PE_Zunyite x rElectron Density= 4.54 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zunyite is Not Radioactive  

Zunyite Classification

Dana Class: 57.03.01.01 (57)Sorosilicate Insular Si3O10 and Larger Noncyclic Groups   (57.03)with [Si5O16] groups   (57.03.01)Dana Group  

57.03.01.01 Zunyite Al13Si5O20(OH,F)18Cl F43m 4 3m

Strunz Class: 09.BJ.55 09 - SILICATES (Germanates)   09.B - Sorosilicates   09.BJ -Sorosilicates with Si3O10, Si4O11, etc  

09.BJ.55 Zunyite Al13Si5O20(OH,F)18Cl F43m 4 3m

 

Other Zunyite Information

References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) See Also: Links to other databases for Zunyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Glendale Community College
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST
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