Zirklerite Mineral Data

General Zirklerite Information

Chemical Formula:

(Fe++,Mg)9Al4Cl18(OH)12•14(H2O) (?)

Composition:

Molecular Weight = 1,634.03 gm

Magnesium 3.35 % Mg 5.55 % MgO

Aluminum 6.60 % Al 12.48 % Al₂O₃

Iron 23.07 % Fe 29.68 % FeO

Hydrogen 2.47 % H 22.05 % H₂O

Chlorine 39.05 % Cl 39.05 % Cl

- % Cl -8.81 % -O=Cl₂

Oxygen 25.46 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

9(Fe²⁺_0.75)9(Mg_0.25)Al₄Cl₁₈(OH)₁₂•14(H₂O)

Environment:

Marine evaporite deposits. An incompletely characterized species.

IMA Status:

Valid Species (Pre-IMA) 1928

Locality:

Hope, Hanover, Germany. Link to MinDat.org Location Data.

Name Origin:

Named after Zirkler, director of the Aschersleben potash works, Germany.

Name Pronunciation:

Zirklerite + Pronunciation

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Zirklerite Crystallography

Crystal System:

TrigonalSpace Group: Unk

Physical Properties of Zirklerite

Cleavage:

{1011} Perfect, {1011} Perfect, {1011} Perfect

Color:

White, Light gray.

Density:

2.6

Diaphaneity:

Transparent to translucent

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

3.5 - Copper Penny

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Zirklerite

Optical Data:

Uniaxial (+), w=1.522, e=1.552, bire=0.0300.

Calculated Properties of Zirklerite

Electron Density:

Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Zirklerite =2.60 gm/cc.

Fermion Index:

Fermion Index = 0.0083634013
Boson Index = 0.9916365987

Photoelectric:

PE_Zirklerite= 9.62 barns/electron
U=PE_Zirklerite x rElectron Density= 24.76 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zirklerite is Not Radioactive

Zirklerite Classification

Dana Class:

10.06.05.01 (10)Oxyhalides and Hydroxyhalides

(10.06)where Am Bn (O,OH)p Xq

(10.06.05)Dana Group

10.06.05.01 Zirklerite (Fe,Mg)9Al4Cl18(OH)12•14(H2O)(?) Unk Trig

Strunz Class:

03.CJ.30 03 - HALIDES

03.C - Complex Halides

03.CJ -With MX6 complexes; M = Fe, Mn, Cu

03.CJ.30 Zirklerite (Fe,Mg)9Al4Cl18(OH)12•14(H2O)(?) Unk Trig

Other Zirklerite Information

References:

NAME( Dana8) PHYS. PROP.(Ford32) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Zirklerite :
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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Print or Cut-and-Paste your Zirklerite Specimen Label here :

Zirklerite

(Fe++,Mg)9Al4Cl18(OH)12•14(H2O) (?)
Dana No: 10.06.05.01 Strunz No: 03.CJ.30
Locality:

Notes: