General Clinozoisite Information
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Chemical Formula: |
Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH) |
Composition: |
Molecular Weight = 454.36 gm |
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Calcium 17.64 % Ca 24.68 % CaO |
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Aluminum 17.82 % Al 33.66 % Al2O3 |
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Silicon 18.54 % Si 39.67 % SiO2 |
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Hydrogen 0.22 % H 1.98 % H2O |
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Oxygen 45.78 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Ca2Al3(SiO4)3(OH) |
Environment: |
Metamorphic and contact metasomatic rocks. |
IMA Status: |
Valid Species (Pre-IMA) 1896 |
Locality: |
Link to MinDat.org Location Data. |
Name Origin: |
Named after its resemblance to zoisite and the monoclinic crystal form. |
Synonym: |
ICSD 66923 |
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PDF 44-1400 |
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Clinozoisite Image |
Images:
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Images:
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Clinozoisite
Comments: Brown, prismatic crystal of clinozoisite.
Location: Alchuri, Shigar Skardu district, Pakistan.
Scale: Crystal size 7x2.3x1.2 cm.
© Fabre Minerals |
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Clinozoisite Crystallography
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Axial Ratios: |
a:b:c =1.5921:1:1.812 |
Cell Dimensions: |
a = 8.98, b = 5.64, c = 10.22, Z = 2; beta = 115.4° V = 467.58 Den(Calc)= 3.23 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m |
X Ray Diffraction: |
By Intensity(I/Io): 2.89(1), 2.79(0.8), 2.59(0.7), |
Forms:
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Crystal Structure:
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Dollase W A , American Mineralogist , 53 (1968) p.1882-1898, Refinement and comparison of the structures of zoisite and clinozoisite
View Additional jPOWD Structure files for Clinozoisite
[1]
[2]
[3]
[4]
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Physical Properties of Clinozoisite
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Cleavage: |
[001] Perfect |
Color: |
Colorless, Green, Gray, Yellow green, Light yellow. |
Density: |
3.3 - 3.4, Average = 3.34 |
Diaphaniety: |
Transparent to translucent |
Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Habit: |
Fibrous - Crystals made up of fibers. |
Habit: |
Massive - Granular - Common texture observed in granite and other igneous rock. |
Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
Hardness: |
7 - Quartz |
Luminescence: |
Non-fluorescent. |
Luster: |
Vitreous (Glassy) |
Streak: |
grayish white |
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Optical Properties of Clinozoisite
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Gladstone-Dale: |
CI meas= -0.018 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.056 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2226,KPDmeas= 0.2146,KC= 0.2108 |
Optical Data: |
Biaxial (+), a=1.706-1.724, b=1.708-1.729, g=1.712-1.735, bire=0.0060-0.0110, 2V(Calc)=72-86, 2V(Meas)=14-90. Dispersion r > v or r < v. |
Pleochroism (x): |
colorless, yellow green, or yellow green. |
Pleochroism (y): |
colorless, green, or pink. |
Pleochroism (z): |
colorless, green, or red. |
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Calculated Properties of Clinozoisite
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Electron Density: |
relectron=3.33 gm/cc note: rClinozoisite =3.35 gm/cc. |
Fermion Index |
Fermion Index = 0.00911 Boson Index = 0.99089 |
Photoelectric: |
PEClinozoisite = 3.40 barns/electron U=PEClinozoisite x relectron= 11.34 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Clinozoisite is Not Radioactive |
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Clinozoisite Classification
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Dana Class: |
58.2.1a.4 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups |
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(58.2)with cations in [6] and higher coordination; single and double groups (n=1,2) |
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(58.2.1a)Epidote group (Epidote subgroup) |
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58.2.1a.1 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m |
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58.2.1a.2 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.3 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m |
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58.2.1a.4 Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.5 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m |
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58.2.1a.6 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m |
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58.2.1a.7 Epidote Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.8 Hancockite (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.9 Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 21/m 2/m |
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58.2.1a.10 Mukhinite Ca2Al2V(SiO4)3(OH) P 21/m 2/m |
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58.2.1a.11 Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.12 Strontiopiemontite (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.13 Androsite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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58.2.1a.14 Ferriallanite-(Ce)! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m |
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58.2.1a.15 Tweddillite! CaSr(Mn,Fe)2Al[Si3O12](OH) P 21/m 2/m |
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58.2.1a.16 Gatelite-(Ce)! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 P 21/a 2/m |
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58.2.1a.17 Niigataite! CaSrAl3(Si2O7)(SiO4)O(OH) P 21/m 2/m |
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58.2.1a.18 Vastmanlandite-(Ce)! Ce3CaMg2Al2Si5O19(OH)2F P 21/m 2/m |
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58.2.1a.19 IMA2002-049! (Mn,Ca)(Ce,REE)AlMnMn(Si2O7)(SiO4)O(OH) P 21/m 2/m |
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58.2.1a.20 Dissakisite-(La)! (Ca,Fe,Th)(REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F)withLa>Ce P 21/m 2/m |
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58.2.1a.22 IMA2004-015! (Mn,Ca)(REE)VAlMn(Si2O7)(SiO4)O(OH) P 21/m 2/m |
Strunz Class: |
VIII/C.23-10 VIII - Silicates |
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VIII/C - Sorosilicates, mixed structure with [SiO4]2- "inseln" and [Si2O7]6- groups |
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VIII/C.23 - Epidote group |
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VIII/C.23-10 Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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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 |
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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 |
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VIII/C.23-40 Strontiopiemontite (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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VIII/C.23-43 Niigataite! CaSrAl3(Si2O7)(SiO4)O(OH) P 21/m 2/m |
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VIII/C.23-45 Tweddillite! CaSr(Mn,Fe)2Al[Si3O12](OH) P 21/m 2/m |
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VIII/C.23-50 Mukhinite Ca2Al2V(SiO4)3(OH) P 21/m 2/m |
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VIII/C.23-52 Androsite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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VIII/C.23-55 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m |
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VIII/C.23-58 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m |
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VIII/C.23-60 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m |
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VIII/C.23-65 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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VIII/C.23-80 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m |
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VIII/C.23-85a Ferriallanite-(Ce)! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m |
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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 |
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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 |
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VIII/C.23-90 Hancockite (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 21/m 2/m |
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VIII/C.23-100 Zoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) Pnmc 2/m 2/m 2/m |
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Other Clinozoisite 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 Clinozoisite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - CalTech Mineral Spectroscopy
4 - Crocoite.com Mineral Locations
5 - EUROmin Project
6 - Franklin Minerals(Dunn)
7 -Google Images
8 -Google Scholar
9 -Handbook of Mineralogy (MinSocAm)
10 -Handbook of Mineralogy (UofA)
11 -MinDAT
12 -MinMax(Deutsch)
13 -MinMax(English)
14 -Mineralienatlas (Deutsch)
15 -Minerals in Thin Sections-Humboldt State
16 - Minerals of Wisconsin
17 -QUT Mineral Atlas
18 -University of Colorado - Mineral Structure Data
19 - WWW-MINCRYST
20 -École des Mines de Paris
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Clinozoisite
Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH)
Dana No: 58.2.1a.4 Strunz No: VIII/C.23-10
Locality:
Notes:
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