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Zirklerite Mineral Data
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General Zirklerite Information
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 Chemical Formula: |
(Fe++,Mg)9Al4Cl18(OH)12•14(H2O) (?) |
| Composition: |
Molecular Weight = 1,634.03 gm |
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Magnesium 3.35 % Mg 5.55 % MgO |
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Aluminum 6.60 % Al 12.48 % Al2O3 |
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Iron 23.07 % Fe 29.68 % FeO |
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Hydrogen 2.47 % H 22.05 % H2O |
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Chlorine 39.05 % Cl 39.05 % Cl |
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- %
Cl -8.81 % -O=Cl2 |
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Oxygen 25.46 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
9(Fe2+0.75)9(Mg0.25)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
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| Crystal System: |
Trigonal Space Group: Unk |
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Physical Properties of Zirklerite
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| 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 |
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Optical Properties of Zirklerite
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| Optical Data: |
Uniaxial (+), w=1.522, e=1.552, bire=0.0300. |
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Calculated Properties of Zirklerite
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| Electron Density: |
Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Zirklerite =2.60 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0083634013
Boson Index = 0.9916365987 |
| Photoelectric: |
PEZirklerite = 9.62 barns/electron
U=PEZirklerite x rElectron Density= 24.76 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zirklerite is Not Radioactive |
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Zirklerite Classification
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| Dana Class: |
10.06.05.01 (10)Oxyhalides and Hydroxyhalides |
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(10.06)where Am Bn (O,OH)p Xq |
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(10.06.05)Dana Group |
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10.06.05.01 Zirklerite (Fe,Mg)9Al4Cl18(OH)12•14(H2O)(?) Unk Trig |
| Strunz Class: |
03.CJ.30 03 - HALIDES |
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03.C - Complex Halides |
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03.CJ -With MX6 complexes; M = Fe, Mn, Cu |
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03.CJ.30 Zirklerite (Fe,Mg)9Al4Cl18(OH)12•14(H2O)(?) Unk Trig |
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Other Zirklerite Information
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| 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 :
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Zirklerite
(Fe++,Mg)9Al4Cl18(OH)12•14(H2O) (?)
Dana No: 10.06.05.01 Strunz No: 03.CJ.30
Locality:
Notes:
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