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 - Hextetrahedral H-M Symbol (4 3m) Space Group: F43m

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

By Intensity(I/I_o): 4.21(1), 8.07(1), 2.68(0.9),

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

Zunyite

Al13Si5O20(OH,F)18Cl
Dana No: 57.03.01.01 Strunz No: 09.BJ.55
Locality:

Notes:

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