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Zinalsite Mineral Data
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General Zinalsite Information
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 Chemical Formula: |
Zn2AlSi2O5(OH)4•2(H2O) (?) |
| Composition: |
Molecular Weight = 397.99 gm |
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Aluminum 6.78 % Al 12.81 % Al2O3 |
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Zinc 32.86 % Zn 40.90 % ZnO |
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Silicon 14.11 % Si 30.19 % SiO2 |
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Hydrogen 2.03 % H 18.11 % H2O |
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Oxygen 44.22 % O |
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______ ______ |
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100.00 % 102.01 % = TOTAL OXIDE |
| Empirical Formula: |
Zn2AlSi2O5(OH)4•2(H2O) |
| Environment: |
Probably an alteration product formed during the near-surface oxidation of zinc deposits. Fraipontite (1927) has priority over Zinalsite (1998). |
| IMA Status: |
Valid Species (Pre-IMA) 1956 (Dana # Added) |
| Locality: |
Kazakhstan Link to MinDat.org Location Data. |
| Name Origin: |
Named for the major chemical constituents, ZINc, ALuminum, and SIlicon. |
| Name Pronunciation: |
Zinalsite + Pronunciation  |
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Zinalsite Image |
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Images:
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Fraipontite Zinalsite Smithsonite
Comments: Pearly white, sub-mm fraipontite (zinalsite) crystals associated with green smithsonite.
Location: Lavrion District Mines, Lavrion District, Attikà (Attica; Attika) Prefecture, Greece.
Scale: Specimen Size 1.4 x 1.0 x 0.9 cm.
© Rob Lavinsky |
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Zinalsite Crystallography
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| Crystal System: |
Monoclinic |
| X Ray Diffraction: |
By Intensity(I/Io): 2.657(1), 2.446(0.8), 7.5633(0.8), |
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Physical Properties of Zinalsite
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| Color: |
White, Rose, Reddish brown. |
| Density: |
3.007 |
| Hardness: |
2.5-3 - Finger Nail-Calcite |
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Optical Properties of Zinalsite
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| Gladstone-Dale: |
CI meas= 0.109 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1921,KC= 0.2155
Ncalc = 1.65 |
| Optical Data: |
Biaxial (-), a=1.567, g=1.588, bire=0.0210 |
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Calculated Properties of Zinalsite
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| Electron Density: |
Bulk Density (Electron Density)=2.98 gm/cc
note: Specific Gravity of Zinalsite =3.01 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEZinalsite = 16.67 barns/electron
U=PEZinalsite x rElectron Density= 49.61 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Zinalsite is Not Radioactive |
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Zinalsite Classification
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| Dana Class: |
71.01.04.05 (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.01)with 1:1 layers |
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(71.01.04)Allophane group |
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71.01.04.01 Allophane Al2O3•(SiO2)1.3-2•((H2O))2.5-3 None |
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71.01.04.02 Hisingerite Fe2Si2O5(OH)4•2(H2O) Unk Mono |
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71.01.04.03 Imogolite Al2SiO3(OH)4 ? Mono |
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71.01.04.04 Neotocite (Mn,Fe)SiO3•(H2O)(?) None |
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71.01.04.05 Zinalsite! Zn2AlSi2O5(OH)4•2(H2O)(?) Mono |
| Strunz Class: |
09.BX.00 09 - SILICATES (Germanates) |
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09.B - Unclassified Strunz Phyllosilicates |
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09.BX -Allophane group |
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09.BX.00 Spodiophyllite? (Na,K)4(Mg,Fe)3(Fe,Al)2(Si8O24) Mono |
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09.BX.00 Pimelite? Ni3Si4O10(OH)2•4(H2O) Unk. Hex |
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09.BX.00 Zinalsite Zn2AlSi2O5(OH)4•2(H2O)(?) Mono |
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09.BX.00 Voloshinite Rb(LiAl1.5[]0.5)(Al0.5Si3.5)O10F2 C 2/c 2/m |
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09.BX.00 Shlykovite KCa[Si4O9(OH)]•3H2O P 21/c 2/m |
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09.BX.00 Orlovite KLi2TiSi4O11F C 2 2 |
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09.BX.00 IMA2009-011 Ba3Na(Fe,Mn)8Ti4(Si2O7)4O4(OH,F)7 C1 1 |
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Other Zinalsite Information
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| References: |
NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Zinalsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - Franklin Minerals(Dunn)
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
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Zinalsite
Zn2AlSi2O5(OH)4•2(H2O) (?)
Dana No: 71.01.04.05 Strunz No: 09.BX.00
Locality:
Notes:
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