Zoisite Mineral Data + 
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- 58.2.1b.1 Zoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) Pnmc 2/m 2/m 2/m
- VIII/C.23-10 Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-20 Epidote Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-30 Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-40 Strontiopiemontite (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-43 Niigataite! CaSrAl3(Si2O7)(SiO4)O(OH) P 21/m 2/m
- VIII/C.23-45 Tweddillite! CaSr(Mn,Fe)2Al[Si3O12](OH) P 21/m 2/m
- VIII/C.23-50 Mukhinite Ca2Al2V(SiO4)3(OH) P 21/m 2/m
- VIII/C.23-52 Androsite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-55 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m
- VIII/C.23-58 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m
- VIII/C.23-60 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
- VIII/C.23-65 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-80 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
- VIII/C.23-85a Ferriallanite-(Ce)! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m
- VIII/C.23-85 Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 21/m 2/m
- VIII/C.23-87 Gatelite-(Ce)! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 P 21/a 2/m
- VIII/C.23-90 Hancockite (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 21/m 2/m
- VIII/C.23-100 Zoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) Pnmc 2/m 2/m 2/m
General Zoisite Information |
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 Chemical Formula: |
Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH) | ||
| Composition: |
Molecular Weight = 454.36 gm | ||
| Calcium 17.64 % Ca 24.68 % CaO | |||
| Aluminum 17.82 % Al 33.66 % Al2O3 | |||
| Silicon 18.54 % Si 39.67 % SiO2 | |||
| Hydrogen 0.22 % H 1.98 % H2O | |||
| Oxygen 45.78 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ca2Al3Si3O12(OH) | ||
| Environment: |
Metamorphic and pegmatite rocks. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1805 | ||
| Locality: |
Rauris and Saualpe, Austria. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after the Austrian natural scientist, Siegmund Zois (1747-1819). | ||
| Synonym: |
Anyolite - green | ||
| ICSD 66924 | |||
| PDF 13-562 | |||
| Tanzanite - blue | |||
| Thulite - red | |||
Zoisite Image | |||
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Images:
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Zoisite Crystallography |
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| Axial Ratios: |
a:b:c =2.9103:1:1.81 | ||
| Cell Dimensions: |
a = 16.24, b = 5.58, c = 10.1, Z = 4; V = 915.25 Den(Calc)= 3.30 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pnmc | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.69(1), 2.87(0.65), 4.03(0.5), | ||
| Forms:
Mouse |
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Crystal Structure:
Mouse |
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Physical Properties of Zoisite |
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| Cleavage: |
[001] Perfect | ||
| Color: |
Gray, Apple green, Brown, Blue, Rose red. | ||
| Density: |
3.3 | ||
| Diaphaniety: |
Transparent to subtranslucent | ||
| Fracture: |
Even - Flat surfaces (not cleavage) fractured in an even pattern. | ||
| Habit: |
Columnar - Forms columns | ||
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | ||
| Habit: |
Striated - Parallel lines on crystal surface or cleavage face. | ||
| Hardness: |
6.5 - Pyrite | ||
| Luminescence: |
None. | ||
| Luster: |
Vitreous - Pearly | ||
| Streak: |
white | ||
Optical Properties of Zoisite |
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| Gladstone-Dale: |
CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2128,KPDmeas= 0.2128,KC= 0.2108 |
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| Optical Data: |
Biaxial (+), a=1.696-1.7, b=1.696-1.702, g=1.702-1.718, bire=0.0060-0.0180, 2V(Calc)=0-40, 2V(Meas)=0-70. Dispersion relatively strong. | ||
| Pleochroism (x): |
colorless or pale pink. | ||
| Pleochroism (y): |
colorless or colorless. | ||
| Pleochroism (z): |
colorless or yellow. | ||
Calculated Properties of Zoisite |
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| Electron Density: |
relectron=3.28 gm/cc |
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| Fermion Index |
Fermion Index = 0.00911 Boson Index = 0.99089 |
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| Photoelectric: |
PEZoisite = 3.40 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Zoisite is Not Radioactive |
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Zoisite Classification |
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| Dana Class: |
58.2.1b.1 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups | ||
| (58.2)with cations in [6] and higher coordination; single and double groups (n=1,2) | |||
| (58.2.1b)Epidote group (Zoisite subgroup) | |||
| Strunz Class: |
VIII/C.23-100 VIII - Silicates | ||
| VIII/C - Sorosilicates, mixed structure with [SiO4]2- "inseln" and [Si2O7]6- groups | |||
| VIII/C.23 - Epidote group | |||
Other Zoisite Information |
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| References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | ||
| See Also: |
Links to other databases for Zoisite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - CalTech Mineral Spectroscopy 6 - EUROmin Project 7 - Franklin Minerals(Palache) 8 - Glendale Community College 9 -Google Images 10 -Google Scholar 11 -Handbook of Mineralogy (MinSocAm) 12 -Handbook of Mineralogy (UofA) 13 - HyperPhysics 14 -MinDAT 15 -MinMax(Deutsch) 16 -MinMax(English) 17 -Mineralienatlas (Deutsch) 18 - Minerals of Wisconsin 19 - Philatelic Mineralogy 20 -QUT Mineral Atlas 21 - Scandinavian mineral gallery 22 - Tradeshop.com - The Rainbow of Gems 23 - UCLA - Petrography Thin-Sections 24 -University of Colorado - Mineral Structure Data 25 - WWW-MINCRYST 26 -École des Mines de Paris Search for Zoisite using: Visit our Advertisers for Zoisite : Translate Zoisite Mineral Data : Ask about Zoisite here : Print or Cut-and-Paste your Zoisite Specimen Label here :
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