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Aliettite Mineral Data
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General Aliettite Information
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 Chemical Formula: |
[Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe++)2-3(Si,Al)4O10(OH)2•n(H2O) |
| Composition: |
Molecular Weight = 823.18 gm |
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Sodium 0.56 % Na 0.75 % Na2O |
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Calcium 0.49 % Ca 0.68 % CaO |
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Magnesium 10.33 % Mg 17.14 % MgO |
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Aluminum 13.11 % Al 24.77 % Al2O3 |
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Iron 4.75 % Fe 6.11 % FeO |
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Silicon 17.06 % Si 36.50 % SiO2 |
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Hydrogen 1.22 % H 10.94 % H2O |
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Oxygen 52.48 % O |
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______ ______ |
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100.00 % 96.89 % = TOTAL OXIDE |
| Empirical Formula: |
Mg3Si4O10(OH)2Ca0.1Na0.2AlFe2+0.7Mg0.5Al3SiO10(OH)2�3(H2O) |
| Environment: |
Low temperature environments in ancient lake sediments. Also found in low-grade Mg-rich metamorphic rocks. |
| IMA Status: |
Approved IMA 1969 |
| Locality: |
Italy, Monte Chiaro, Taro valley. Amargosa desert region, Death Valley, California, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Andrea Alietti (1923-), clay mineralogist. |
| Name Pronunciation: |
Aliettite + Pronunciation  |
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Aliettite Image |
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Images:
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Aliettite Crystallography
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| Axial Ratios: |
a:b = 1:4.71625 |
| Cell Dimensions: |
a = 5.216, b = 24.6, Z = 1; V = 669.28 Den(Calc)= 2.04 |
| Crystal System: |
Monoclinic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 12(1), 1.52(0.9), 2.62(0.9),1.314(0.7), 3.5(0.6), 4.54(0.6), 1.725(0.4), 24(0.2), |
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Physical Properties of Aliettite
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| Cleavage: |
{???} Perfect |
| Color: |
White, Dark green, Buff. |
| Diaphaneity: |
Translucent |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Hardness: |
1-2 - Between Talc and Gypsum |
| Luster: |
Earthy (Dull) |
| Streak: |
white |
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Optical Properties of Aliettite
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| Gladstone-Dale: |
CI calc= -0.292 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2752,KC= 0.213
Ncalc = 1.43 |
| Optical Data: |
Uniaxial (?), a=1.556, b=1.567, bire=0.0110. |
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Calculated Properties of Aliettite
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| Electron Density: |
Bulk Density (Electron Density)=2.04 gm/cc
note: Specific Gravity of Aliettite =2.04 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEAliettite = 2.75 barns/electron
U=PEAliettite x rElectron Density= 5.63 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aliettite is Not Radioactive |
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Aliettite Classification
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| Dana Class: |
71.04.02.08 (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.04)interlayered 1:1, 2:1, and octahedra |
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(71.04.02)Interstratified Chlorite-Smectite group |
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71.04.02.01 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m |
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71.04.02.02 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono |
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71.04.02.03 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m |
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71.04.02.04 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho |
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71.04.02.05 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho |
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71.04.02.06 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono |
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71.04.02.07 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono |
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71.04.02.08 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono |
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71.04.02.09 Glagolevite! NaMg6[Si3AlO10](OH,O)8•H2O C1 1 |
| Strunz Class: |
09.EC.60 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets |
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09.EC.60 Aliettite [Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe)2-3(Si,Al)4O10(OH)2•n(H2O) Unk Mono |
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09.EC.60 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m |
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09.EC.60 Corrensite (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10•n(H2O) Unk Ortho |
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09.EC.60 Kulkeite Na0.35Mg8AlSi7O20(OH)10 Unk Mono |
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09.EC.60 Karpinskite (Mg,Ni)2Si2O5(OH)2(?) Unk Mono |
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09.EC.60 Illite* (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] C 2/m 2/m |
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09.EC.60 Hydrobiotite [K(Mg,Fe)3(Al,Fe)Si3O10(OH,F)2]•[(Mg,Fe,Al)3(Si,Al)4O10(OH)2•4(H2O)] C 2/m 2/m |
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09.EC.60 Lunijianlaite LiAl6(Si7Al)O20(OH)10 Unk Mono |
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09.EC.60 Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4•2(H2O) Unk Mono |
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09.EC.60 Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 C 2/m 2/m |
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09.EC.60 Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12•5(H2O) Unk Ortho |
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09.EC.60 Brinrobertsite! (Na,K,Ca)x(Al,Fe,Mg)4(Si,Al)8O20(OH)4•3.54(H2O)[x=0.35,n=3.54] pseudo 2/m 2/m |
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Other Aliettite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
| See Also: |
Links to other databases for Aliettite :
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 Aliettite Specimen Label here :
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Aliettite
[Mg3Si4O10(OH)2](Ca0.5,Na)0.33(Al,Mg,Fe++)2-3(Si,Al)4O10(OH)2•n(H2O)
Dana No: 71.04.02.08 Strunz No: 09.EC.60
Locality:
Notes:
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