General Gillardite Information![]() Cu3NiCl2(OH)6 |
![]() Molecular Weight = 422.66 gm |
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Iron 0.05 % Fe 0.07 % FeO |
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Cobalt 0.17 % Co 0.21 % CoO |
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Copper 46.32 % Cu 52.15 % Cu2O |
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Nickel 12.54 % Ni 15.96 % NiO |
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Hydrogen 1.43 % H 12.79 % H2O |
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Chlorine 16.78 % Cl 16.78 % Cl |
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Cl -3.79 % -O=Cl2 |
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Oxygen 22.71 % O |
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______ ______ |
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100.00 % 94.17 % = TOTAL OXIDE |
![]() Cu3.08Ni0.9Co0.01Fe2+0.004Cl2(OH)6 |
![]() Found in a silicified ferruginous gossan. Ni analog of herbertsmithite. Atacamite group. |
![]() Approved IMA 2006 (Dana # Added) |
![]() 132 North deposit, Widgiemooltha, Western Australia, Australia Link to MinDat.org Location Data. |
![]() Named for Professor D. Gillard, in recognition of his contributions to the field of inorganic chemistry. |
![]() IMA2006-041 |
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Gillardite Crystallography![]() a:c = 1:2.02532 |
![]() a = 6.8364, c = 13.8459, Z = 3; V = 560.41 Den(Calc)= 3.76 |
![]() Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3m |
![]() By Intensity(I/Io): 5.463(1), 2.755(0.69), 2.257(0.39),2.903(0.19), 4.651(0.16), 2.728(0.14), 1.82(0.13), 4.519(0.11), |
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| Physical Properties of Gillardite![]() {101} Good |
![]() Dark green. |
![]() Transparent |
![]() Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende). |
![]() Aggregates - Made of numerous individual crystals or clusters. |
![]() Triangular Crystals - Occurs as triangular shaped crystals. |
![]() 3 - Calcite |
![]() Vitreous (Glassy) |
![]() green |
| Optical Properties of Gillardite![]() CI calc= 0.099 (Poor) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.2226,KC= 0.2471 Ncalc = 1.93 ![]() Biaxial (+), a=1.836, b=1.838, |
| Calculated Properties of Gillardite![]() Bulk Density (Electron Density)=3.61 gm/cc |
note: Specific Gravity of Gillardite =3.76 gm/cc. ![]() Fermion Index = 0.0015392622 |
Boson Index = 0.9984607378 ![]() PEGillardite = 26.58 barns/electron |
U=PEGillardite x rElectron Density= 96.03 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Gillardite is Not Radioactive | Gillardite Classification![]() 10.01.01.03 (10)Oxyhalides and Hydroxyhalides |
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(10.01)where (A)2 (O,OH)3 Xq |
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(10.01.01)Atacamite group |
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![]() 03.DA.10c 03 - HALIDES |
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03.D - Oxyhalides, Hydroxyhalides and Related Double Halides |
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03.DA -With Cu, etc., without Pb |
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| Other Gillardite Information![]() NAME( AmMin v93:252) PHYS. PROP.(AmMin v93:252, en.scientificcommons.org) OPTIC PROP.(en.scientificcommons.org) |
![]() Links to other databases for Gillardite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Gillardite using: Visit our Advertisers for Gillardite : A Bijoux Google Search for GillarditeAdam's Minerals Google Search for Gillardite Cape Minerals Google Search for Gillardite Dakota Matrix Minerals Google Search for Gillardite Excalibur Mineral Corp. Google Search for Gillardite Exceptional Minerals Google Search for Gillardite John Betts Fine Minerals Search for Gillardite McDougall Minerals Google Search for Gillardite Mineral News Website Link Rock and Mineral Shows Google Search for Gillardite Weinrich Minerals, Inc. Google Search for Gillardite Ask about Gillardite here : Print or Cut-and-Paste your Gillardite Specimen Label here :
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