Zoisite
A valid IMA mineral species - grandfathered
This page kindly sponsored by Mike Salotti
About Zoisite
Formula:
(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Colour:
Colourless, purple, greyish-white, grey, yellowish-brown, yellow, pink, green, blue, violet
Lustre:
Vitreous, Pearly
Hardness:
6 - 7
Specific Gravity:
3.15 - 3.36
Crystal System:
Orthorhombic
Name:
Originally named saualpite for the locality Saualpe in Carinthia, Austria, where it occurs in eclogites. The name zoisite was introduced by A.G. Werner in 1805 to honour Sigmund Zois, Baron von Edelstein (1747-1819), an Austrian scholar who financed mineral-collecting expeditions. It was from Baron Zois that Werner obtained the holotype specimen from Saualpe (found by mineral dealer Simon Prešern in 1804).
Dimorph of:
Formerly assigned to the Epidote Group. Since Zoisite is the orthorhombic polymorph of Clinozoisite, zoisite is no longer considered a member of this group, according to the new nomenclature of the Epidote Supergroup (Armbruster et al., 2006; Mills et al., 2009).
The fully calcian (or Ca2) analogue of zoisite-(Pb).
At 550 °C, clinozoisite is considerably less stable than zoisite, and the reaction with clinozoisite, though reversible, is metastable (Jenkins et al., 1983; see also Jenkins et al., 1985); Fe-free clinozoisite becomes stable relative to zoisite below about 200 °C.
Visit gemdat.org for gemological information about Zoisite.
The fully calcian (or Ca2) analogue of zoisite-(Pb).
At 550 °C, clinozoisite is considerably less stable than zoisite, and the reaction with clinozoisite, though reversible, is metastable (Jenkins et al., 1983; see also Jenkins et al., 1985); Fe-free clinozoisite becomes stable relative to zoisite below about 200 °C.
Visit gemdat.org for gemological information about Zoisite.Unique Identifiers
Mindat ID:
4430
Long-form identifier:
mindat:1:1:4430:7
Similar Names
| Sassite | A valid IMA mineral species | Ti23+Ti4+O5 |
| Souesite | A synonym of Awaruite | |
| Zeasite | A synonym of 'Wood Opal' | |
| Ziesite | A valid IMA mineral species | β-Cu2(V2O7) |
| Zoisite-(Pb) | A valid IMA mineral species | (CaPb)(AlAlAl)O[Si2O7][SiO4](OH) |
IMA Classification of Zoisite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ca2Al3(Si2O7)(SiO4)O(OH)
Classification of Zoisite
9.BG.10
9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
58.2.1b.1
58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
16.9.8
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Zo | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Zo | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
| Zo | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
| Zo | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
| Zo | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Pronunciation of Zoisite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom | |
| Jolyon Ralph | United Kingdom |
Physical Properties of Zoisite
Vitreous, Pearly
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavage {010}
Colour:
Colourless, purple, greyish-white, grey, yellowish-brown, yellow, pink, green, blue, violet
Streak:
White
Hardness:
6 - 7 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {010}
Imperfect on {100}
Perfect on {010}
Imperfect on {100}
Fracture:
Irregular/Uneven, Conchoidal
Density:
3.15 - 3.36 g/cm3 (Measured) 3.35 g/cm3 (Calculated)
Optical Data of Zoisite
Type:
Biaxial (+)
RI values:
nα = 1.696 - 1.700 nβ = 1.696 - 1.702 nγ = 1.702 - 1.718
Max. Birefringence:
δ = 0.006 - 0.018
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
No measured or calculated 2V is on file for this mineral, so the value used here (34°) is estimated from its recorded refractive indices and optic sign, not from a direct 2V measurement.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
No measured or calculated 2V is on file for this mineral, so the value used here (34°) is estimated from its recorded refractive indices and optic sign, not from a direct 2V measurement.
Dispersion:
relatively strong
Pleochroism:
Visible
Comments:
X= pale pink to red violet
Y= nearly colourless to bright pink or deep blue
Z= pale yellow to yellow-green
Y= nearly colourless to bright pink or deep blue
Z= pale yellow to yellow-green
Chemistry of Zoisite
Mindat Formula:
(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Element Weights:
Common Impurities:
Fe,Mn,Mg,Cr,Ti,Ca,Na,V,Sr,H2O
Chemical Analysis
Oxide wt%:
| 1 | 2 | 3 | 4 | |
|---|---|---|---|---|
| SiO2 | 40.1 % | 39.74 % | 39.00 % | 39.43 % |
| Al2O3 | 31.9 % | 33.33 % | 31.96 % | 31.89 % |
| Mn2O3 | 0.1 % | |||
| Fe2O3 | 2.7 % | |||
| CaO | 23.3 % | 25.21 % | 24.88 % | 24.36 % |
| H2O | 1.9 % | |||
| TiO2 | 0.02 % | 0.08 % | ||
| Cr2O3 | 0.08 % | 0.19 % | ||
| FeO | 0.76 % | 1.65 % | ||
| MnO | 0.05 % | 0.05 % | 0.06 % | |
| MgO | 0.09 % | 0.15 % | 0.03 % | |
| Na2O | 0.02 % | 0.02 % | ||
| K2O | 0.01 % | 0.05 % | ||
| FeOt | 2.30 % | |||
| Total: | 100 % | 99.31 % | 98.03 % | 98.07 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 2 | Ca2.01(Al2.94Mg0.02Mn0.01Fe3+0.05 Cr0.01)Σ3.03Si2.99O12(OH) |
| 3 | Ca2.04 (Al2.88Mg0.02Fe0.10Cr0.01)Σ3.01Si2.98) O22OH |
| 4 | Ca1.99Al2.86Si2.98O22OH |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Mjønes Tunnel, Åstfjorden, Snillfjord, Orkland, Trøndelag, Norway | Pink zoisite, PXRD + SEM/EDS | |
| 2 | Eissee eclogite, Timmelbach valley, Prägraten am Großvenediger, Lienz District, Tyrol, Austria | Zoisite from the matrix of a kyanite-eclogite. | |
| 3 | Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, Austria | EMPA analysis of zoisite laths of up to 3 mm in length from the matrix in a kyanite eclogite. | |
| 4 | Obidim eclogite, Bansko Municipality, Blagoevgrad Province, Bulgaria | EMPA analysis ( State Geological Institute of Dionyz Stur in Bratislava).of a zoisite inclusion in garnet from a kyanite-eclogite. |
Crystallography of Zoisite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 16.19 Å, b = 5.54 Å, c = 10.03 Å
Ratio:
a:b:c = 2.922 : 1 : 1.81
Unit Cell V:
899.62 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic crystals, columnar to compact, massive
Crystallographic forms of Zoisite
Crystal Atlas:
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019070 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 0.0001 | 293 | |
| 0004397 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004396 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004395 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004394 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004393 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004392 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004391 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004390 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004389 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004388 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004387 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004386 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004385 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004384 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004383 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0004382 | Zoisite | Dorsam G, Liebscher A, Franz G, Gottschalk M (2007) Crystal chemistry of synthetic Ca2Al3Si3O12OH - Sr2Al3Si3O12OH solid solution series of zoisite and clinozoisite American Mineralogist 92 1133-1147 | ![]() | 2007 | synthetic | 0 | 293 |
| 0019073 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 1.144 | 293 | |
| 0019074 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 2.945 | 293 | |
| 0019075 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 4.025 | 293 | |
| 0019072 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 5.145 | 293 | |
| 0019076 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 5.533 | 293 | |
| 0019077 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 6.511 | 293 | |
| 0019071 | Zoisite | Alvaro M, Angel R J, Camara F (2012) High-pressure behavior of zoisite American Mineralogist 97 1165-1176 | 2012 | Merelani Hills, Tanzania | 7.766 | 293 | |
| 0002859 | Zoisite | Liebscher A, Gottschalk M, Franz G (2002) The substitution Fe-Al and the isosymmetric displacive phase transition in synthetic zoisite: A powder X-ray and infrared spectroscopic study American Mineralogist 87 909-921 | ![]() | 2002 | 0 | 293 | |
| 0002858 | Zoisite | Liebscher A, Gottschalk M, Franz G (2002) The substitution Fe-Al and the isosymmetric displacive phase transition in synthetic zoisite: A powder X-ray and infrared spectroscopic study American Mineralogist 87 909-921 | ![]() | 2002 | 0 | 293 | |
| 0002857 | Zoisite | Liebscher A, Gottschalk M, Franz G (2002) The substitution Fe-Al and the isosymmetric displacive phase transition in synthetic zoisite: A powder X-ray and infrared spectroscopic study American Mineralogist 87 909-921 | ![]() | 2002 | 0 | 293 | |
| 0002856 | Zoisite | Liebscher A, Gottschalk M, Franz G (2002) The substitution Fe-Al and the isosymmetric displacive phase transition in synthetic zoisite: A powder X-ray and infrared spectroscopic study American Mineralogist 87 909-921 | ![]() | 2002 | 0 | 293 | |
| 0002855 | Zoisite | Liebscher A, Gottschalk M, Franz G (2002) The substitution Fe-Al and the isosymmetric displacive phase transition in synthetic zoisite: A powder X-ray and infrared spectroscopic study American Mineralogist 87 909-921 | ![]() | 2002 | 0 | 293 | |
| 0001859 | Zoisite | Comodi P, Zanazzi P F (1997) The pressure behavior of clinozoisite and zoisite: An X-ray diffraction study American Mineralogist 82 61-68 | ![]() | 1997 | 0.0001 | 293 | |
| 0000184 | Zoisite | Dollase W A (1968) Refinement and comparison of the structures of zoisite and clinozoisite American Mineralogist 53 1882-1898 | ![]() | 1968 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Loading XRD data...
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.693 Å | (100) |
| 2.874 Å | (65) |
| 4.03 Å | (50) |
| 8.09 Å | (40) |
| 2.019 Å | (35) |
| 1.601 Å | (35) |
| 5.01 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3b: Earth’s earliest hydrosphere | >4.45 |
| 16 : Low-? aqueous alteration of Hadean subaerial lithologies (see also #23) | |
| High-? alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 39 : High-? metamorphism (blueschist, eclogite, ultrahigh ? facies) | |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) | |
| 41 : Mantle metasomatism |
Geological Setting:
Medium grade regionally metamorphosed rocks, eclogites, blueschist facies metamorphic rocks.
Type Occurrence of Zoisite
Geological Setting of Type Material:
Pegmatite in eclogite
Synonyms of Zoisite
Other Language Names for Zoisite
Varieties of Zoisite
| Chrome-Zoisite | A Cr-bearing variety of Zoisite. |
| Pseudozoisite | A zoisite with anomalous optical properties. |
| Tanzanite | A gem variety of zoisite with a blue to blue-violet colour. The colour is due to the incorporation of trace amounts of vanadium cations (V4+ absorption band increased at 380 nm, V3+ absorption band at 350 nm decreased with heating). Note that a signifi... |
| Thulite | A pink variety of zoisite, frequently manganian, i.e. containing trivalent Mn (not manganoan, which refers to divalent Mn). Originally described from Kleppan, Sauland, Hjartdal, Telemark, Norway. Note: "Thulite" from granite pegmatites and some metamorp... |
Common Associates
Associations Based on Photo Data:
| 91 photos of Zoisite associated with 'Ruby' | Al2O3 |
| 61 photos of Zoisite associated with Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| 26 photos of Zoisite associated with Quartz | SiO2 |
| 16 photos of Zoisite associated with Graphite | C |
| 16 photos of Zoisite associated with Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| 15 photos of Zoisite associated with Calcite | CaCO3 |
| 15 photos of Zoisite associated with Corundum | Al2O3 |
| 8 photos of Zoisite associated with Diopside | CaMgSi2O6 |
| 7 photos of Zoisite associated with Spinel | MgAl2O4 |
| 7 photos of Zoisite associated with Prehnite | Ca2Al2Si3O10(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 9.BG. | Alumovesuvianite | Ca19AlAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| 9.BG. | Alnaperbøeite-(Ce) | Ca(Ce2.5Na0.5)(AlAl2Al)[Si2O7][SiO4]3O(OH)2 |
| 9.BG. | Zilbermintsite-(La) | (CaLa5)(Fe3+Al3Fe2+)[Si2O7][SiO4]5O(OH)3 |
| 9.BG. | Heflikite | (CaCa)(AlAlSc)O[Si2O7][SiO4](OH) |
| 9.BG. | Magnesiovesuvianite | Ca19MgAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG. | Zoisite-(Pb) | (CaPb)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG. | Shuiskite-(Cr) | Ca2Cr3+Cr3+2[Si2O6OH][SiO4](OH)2O |
| 9.BG. | Radekškodaite Group | |
| 9.BG.05 | Dissakisite-(La) | (CaLa)(AlAlMg)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Manganiandrosite-(Ce) | (Mn2+Ce)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Dissakisite-(Ce) | (CaCe)(AlAlMg)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Sm) | (CaSm)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Hancockite | (CaPb)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Dollaseite-(Ce) | (CaCe)(MgAlMg)F[Si2O7][SiO4](OH) |
| 9.BG.05a v | 'Unnamed (Ga-analogue of Epidote)' | (CaCa)(AlAlGa3+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Epidote-(Sr) | (CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Vanadoandrosite-(Ce) | (Mn2+Ce)(V3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoallanite-(La) | (CaLa)(V3+AlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | 'Unnamed (Mg-analogue of Ferriallanite-(Ce))' | (CaCe)(Fe3+AlMg)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriallanite-(La) | (CaLa)(Fe3+AlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Uedaite-(Ce) | (Mn2+Ce)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Tweddillite | (CaSr)(Mn3+AlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Åskagenite-(Nd) | (Mn2+Nd)(AlAlFe3+)O[Si2O7][SiO4]O |
| 9.BG.05 | Piemontite-(Pb) | (CaPb)(AlAlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Ce) | (CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(La) | (CaLa)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Y) | (CaY)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Akasakaite-(Ce) | (CaCe)(AlAlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Manganiandrosite-(La) | (Mn2+La)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Akasakaite-(La) | (CaLa)(AlAlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoakasakaite-(La) | (CaLa)(V3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Khristovite-(Ce) | (CaCe)(MgAlMn2+)F[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriakasakaite-(La) | (CaLa)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Ferriandrosite-(La) | (Mn2+La)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | 'Androsite-(Ce)' | (Mn2+Ce)(AlAlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Vielleaureite-(Ce) | Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH) |
| 9.BG.05 | Ferriandrosite-(Ce) | (Mn2+Ce)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriallanite-(Ce) | (CaCe)(Fe3+AlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | 'Unnamed (Mn3+-analogue of Ferriakasakaite-(Ce))' | (CaCe)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Vanadoakasakaite-(Ce) | (CaCe)(V3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Piemontite-(Sr) | (CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH) |
| 9.BG.05 | Niigataite | (CaSr)(AlAlAl)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Ferriakasakaite-(Ce) | (CaCe)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Allanite-(Nd) | (CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | 'UM1989-32-SiO:AlCaFeHREE' | (Ca0.5◻0.5REE)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| 9.BG.05a | Mukhinite | (CaCa)(AlAlV3+)O[Si2O7][SiO4](OH) |
| 9.BG.05b | Manganiakasakaite-(La) | (CaLa)(Mn3+AlMn2+)O[Si2O7][SiO4](OH) |
| 9.BG.15 | Macfallite | Ca2Mn3+3(SiO4)(Si2O7)(OH)3 |
| 9.BG.15 | Sursassite | Mn2+2Al3(SiO4)(Si2O7)(OH)3 |
| 9.BG.20 | Pumpellyite-(Al) | Ca2AlAl2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Shuiskite-(Mg) | Ca2MgCr3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Julgoldite-(Fe2+) | Ca2Fe2+Fe3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Okhotskite | Ca2Mn2+Mn3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Julgoldite-(Mg) | Ca2MgFe3+2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Poppiite | Ca2V3+V3+2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Julgoldite-(Fe3+) | Ca2Fe3+Fe3+2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Pumpellyite-(Fe2+) | Ca2Fe2+Al2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Pumpellyite-(Fe3+) | Ca2Fe3+Al2[Si2O6OH][SiO4](OH)2O |
| 9.BG.20 | Pumpellyite-(Mg) | Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.20 | Pumpellyite-(Mn2+) | Ca2Mn2+Al2[Si2O6OH][SiO4](OH)2(OH) |
| 9.BG.25 | Ganomalite | Pb9Ca5Mn(Si2O7)4(SiO4)O |
| 9.BG.25 | Wayneburnhamite | Pb9Ca6(Si2O7)3(SiO4)3 |
| 9.BG.30 | Rustumite | Ca10(Si2O7)2(SiO4)(OH)2Cl2 |
| 9.BG.35 | Modraite | Ca19Fe2+Al4(Al6Fe2+2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG.35 | Fluorvesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(F,OH)9 |
| 9.BG.35 | Vesuvianite | Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| 9.BG.35 | Milanriederite | (Ca18[REE])Fe3+Al4(Mg4Al4)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG.35 | Manaevite-(Ce) | (Ca13Ce4[H2O]2)Mg(Al3Mg)(Mg3Ti3Fe3+2)(◻4)◻[Si2O7]4[(SiO4)8(H4O4)2]O(OH)9 |
| 9.BG.35 | Hongheite | Ca19Fe2+Al4(Fe3+,Mg)8(◻4)B[Si2O7]4[(SiO4)10]O(OH,O)9 |
| 9.BG.35 | Wiluite | Ca19MgAl4(Al,Mg)8(B,◻)4◻[Si2O7]4[(SiO4)10]O(O,OH)9 |
| 9.BG.35 | Cyprine | Ca19Cu2+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9 |
| 9.BG.35 | Manganvesuvianite | Ca19Mn3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9 |
| 9.BG.40 | Vyuntspakhkite-(Y) | (Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7 |
| 9.BG.45 | Dellaite | Ca6Si3O11(OH)2 |
| 9.BG.50 | Ferriperbøeite-(Ce) | CaCe3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Perbøeite-(La) | CaLa3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Perbøeite-(Ce) | CaCe3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Gatelite-(Ce) | CaCe3(AlAl2Mg)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.50 | Ferriperbøeite-(La) | CaLa3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2 |
| 9.BG.55 | Västmanlandite-(Ce) | CaCe3(MgAl2Mg)[Si2O7][SiO4]3F(OH)2 |
| 9.BG.60 | Radekškodaite-(La) | (CaLa5)(Al4Fe2+)[Si2O7][SiO4]5O(OH)3 |
| 9.BG.60 | Radekškodaite-(Ce) | (CaCe5)(Al4Fe2+)[Si2O7][SiO4]5O(OH)3 |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Zoisite in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Zoisite
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References for Zoisite
Reference List:
Pistorius, Carl W. F. T. (1961) Synthesis and Lattice Constants of Pure Zoisite and Clinozoisite. The Journal of Geology, 69 (5) 604-609 doi:10.1086/626774
Newton, Robert C. (1965) The Thermal Stability of Zoisite. The Journal of Geology, 73 (3) 431-441 doi:10.1086/627075
Dollase, W. A. (1968) Refinement and comparison of the structures of zoisite and clinozoisite. American Mineralogist, 53 (11-12) 1882-1898
Abrecht, J. (1981) Pink zoisite from the Aar Massif, Switzerland. Mineralogical Magazine, 44 (333) 45-49 doi:10.1180/minmag.1981.44.333.05
Jenkins, D. M., Newton, R. C., Goldsmith, J. R. (1983) Fe-free clinozoisite stability relative to zoisite. Nature, 304 (5927). 622-623 doi:10.1038/304622a0
Maaskant, P. (1985) The iron content and optic axial angle in zoisites from Galicia, NW Spain. Mineralogical Magazine, 49 (350) 97-100 doi:10.1180/minmag.1985.049.350.14
Jenkins, David M., Newton, Robert C., Goldsmith, Julian R. (1985) Relative Stability of Fe-Free Zoisite and Clinozoisite. The Journal of Geology, 93 (6) 663-672 doi:10.1086/628994
Smith, J. V., Pluth, J. J., Richardson, J. W., Kvick, Å. (1987) Neutron diffraction study of zoisite at 15 K and X-ray study at room temperature. Zeitschrift für Kristallographie, 179 (1). 305-321 doi:10.1524/zkri.1987.179.1-4.305
Franz, Gerhard, Selverstone, Jane (1992) An empirical phase diagram for the clinozoisite-zoisite transformation in the system Ca2Al3Si3O12(OH)-Ca2Al2Fe3+Si3O12(OH). American Mineralogist, 77 (5-6). 631-642
Schmidt, Max W., Poli, Stefano (1994) The stability of lawsonite and zoisite at high pressures: Experiments in CASH to 92 kbar and implications for the presence of hydrous phases in subducted lithosphere. Earth and Planetary Science Letters, 124 (1) 105-118 doi:10.1016/0012-821x(94)00080-8
Pawley, A. R., Redfern, Simon A. T., Holland, T. J. B. (1996) Volume behavior of hydrous minerals at high pressure and temperature: I. Thermal expansion of lawsonite, zoisite, clinozoisite, and diaspore. American Mineralogist, 81 (3). 335-340 doi:10.2138/am-1996-3-407
Holland, T. J. B., Redfern, Simon A. T., Pawley, A. R. (1996) Volume behavior of hydrous minerals at high pressure and temperature: II. Compressibilities of lawsonite, zoisite, clinozoisite, and epidote. American Mineralogist, 81 (3). 341-348 doi:10.2138/am-1996-3-408
Grevel, Klaus-D., Nowlan, Elke Ursula, Fasshauer, Detlef W., Burchard, Michael (2000) In situ X-ray diffraction investigation of lawsonite and zoisite at high pressures and temperatures. American Mineralogist, 85 (1) 206-216 doi:10.2138/am-2000-0120
Armbruster, Thomas, Bonazzi, Paola, Akasaka, Masahide, Bermanec, Vladimir, Chopin, Christian, Gieré, Reto, Heuss-Assbichler, Soraya, Liebscher, Axel, Menchetti, Silvio, Pan, Yuanming, Pasero, Marco (2006) Recommended nomenclature of epidote-group minerals. European Journal of Mineralogy, 18 (5) 551-567 doi:10.1127/0935-1221/2006/0018-0551
Localities for Zoisite
Showing 1,607 localities.
Locality List
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All localities listed without proper references should be considered as questionable.
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The
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region, Tanzania