Ferro-tschermakite
A valid IMA mineral species
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About Ferro-tschermakite
Gustav Tschermak
Formula:
â»{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2
Ferro-tschermakite is defined as a tschermakite group member with the following dominant elements:
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: (OH) as the dominant anion
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: (OH) as the dominant anion
Colour:
Medium green to dark green to green-black to black, also brownish-green.
Lustre:
Vitreous
Hardness:
5 - 6
Crystal System:
Monoclinic
Member of:
Name:
For its iron-rich relationship to tschermakite, named for Gustav Tschermak.
Ferro-tschermakite is defined as a Tschermakite-Group member with Fe2+ >Mg and Al>Fe3+ in the C position. Ferro-tschermakite has been redefined in the 2012 Amphibole nomenclature in that:
1) The formula is changed from â(Ca2)(Fe2+3AlFe3+)(Al2Si6O22)(OH)2 to â(Ca2)(Fe2+3Al2)(Al2Si6O22)(OH)2. Consequently all pre-2012 literature references to ferro-tschermakite should be checked to verify that Al>Fe3+ in the C position. If Fe3+>Al in the C position the material will be ferro-ferri-tschermakite.
2) The tschermakite group is in the 2012 nomenclature defined with C(Al+Fe3++2Ti)>1.5 apfu, whereas the pre-2012 definition was defined with 5.5 < Si < 6.5 apfu. This redefinition does not change the formula, but many amphiboles qualifying as tschermakite pre-2012 will now be ferro-hornblende or ferro-ferrihornblende.
It should also be noted that pre-1978 tschermakite was defined with A+B(Na+K+Ca)<2.5. As tschermakite often contains less than 2 apfu Ca, older literature may describe amphiboles with A(Na+K)>0.5 as tschermakites. These are now considered pargasites.
NOTE: Most analyzed samples are close to one or more of the tschermakite/hastingsite/pargasite/sadanagaite joins. Any tschermakite specimen should therefore be analysed with qualitative chemical analysis (EMPA minimum, ideally in combination with Mössbauer spectroscopy).
Compositionally similar to (Na-bearing) ferro-pargasite.
May be confused with Ca-bearing almandine.
1) The formula is changed from â(Ca2)(Fe2+3AlFe3+)(Al2Si6O22)(OH)2 to â(Ca2)(Fe2+3Al2)(Al2Si6O22)(OH)2. Consequently all pre-2012 literature references to ferro-tschermakite should be checked to verify that Al>Fe3+ in the C position. If Fe3+>Al in the C position the material will be ferro-ferri-tschermakite.
2) The tschermakite group is in the 2012 nomenclature defined with C(Al+Fe3++2Ti)>1.5 apfu, whereas the pre-2012 definition was defined with 5.5 < Si < 6.5 apfu. This redefinition does not change the formula, but many amphiboles qualifying as tschermakite pre-2012 will now be ferro-hornblende or ferro-ferrihornblende.
It should also be noted that pre-1978 tschermakite was defined with A+B(Na+K+Ca)<2.5. As tschermakite often contains less than 2 apfu Ca, older literature may describe amphiboles with A(Na+K)>0.5 as tschermakites. These are now considered pargasites.
NOTE: Most analyzed samples are close to one or more of the tschermakite/hastingsite/pargasite/sadanagaite joins. Any tschermakite specimen should therefore be analysed with qualitative chemical analysis (EMPA minimum, ideally in combination with Mössbauer spectroscopy).
Compositionally similar to (Na-bearing) ferro-pargasite.
May be confused with Ca-bearing almandine.
Unique Identifiers
Mindat ID:
1532
Long-form identifier:
mindat:1:1:1532:1
GUID
(UUID V4):
(UUID V4):
73aa626f-58f7-42bc-b7de-7dfccd08ff66
IMA Classification of Ferro-tschermakite
Approved
IMA Formula:
â»Ca2(Fe2+3Al2)(Si6Al2)O22(OH)2
Approval year:
2017
First published:
2018
Approval history:
Redefined by Hawthorne et al. (2012).
Formally approved by IMA as a valid species in 2016.
Formally approved by IMA as a valid species in 2016.
Classification of Ferro-tschermakite
9.DE.10
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
16.21.3
16 : Silicates Containing Aluminum and other Metals
21 : Aluminosilicates of Fe and Ca
16 : Silicates Containing Aluminum and other Metals
21 : Aluminosilicates of Fe and Ca
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAâCNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Fts | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Fts | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277â279. |
| Fe2-Ts | 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 |
| Fts | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185â187 doi:10.2138/am.2010.3371 |
| Fts | 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 Ferro-tschermakite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Ferro-tschermakite
Vitreous
Colour:
Medium green to dark green to green-black to black, also brownish-green.
Streak:
Pale grey-green
Hardness:
5 - 6 on Mohs scale
Cleavage:
Perfect
on {110}
on {110}
Optical Data of Ferro-tschermakite
Type:
Biaxial (-)
RI values:
nα = 1.720 nγ = 1.750
Max Birefringence:
δ = 0.030
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively strong
Chemistry of Ferro-tschermakite
Mindat Formula:
â»{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2
Ferro-tschermakite is defined as a tschermakite group member with the following dominant elements:
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: (OH) as the dominant anion
Ferro-tschermakite is defined as a tschermakite group member with the following dominant elements:
C position: Fe as the dominant divalent cation and Al as the dominant trivalent cation.
W position: (OH) as the dominant anion
Common Impurities:
Ti,Mn,Na,K,F,Cl,Mg,Fe2+
Crystallography of Ferro-tschermakite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.7598(6) Å, b = 18.022(1) Å, c = 5.3299(3) Å
β = 104.826(1)°
β = 104.826(1)°
Ratio:
a:b:c = 0.542 : 1 : 0.296
Unit Cell V:
906.27 Ă
Âł
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.359 Ă | (100) |
| 3.388 Ă | (27) |
| 3.098 Ă | (55) |
| 2.708 Ă | (87) |
| 2.595 Ă | (41) |
| 2.552 Ă | (43) |
| 2.330 Ă | (33) |
| 2.159 Ă | (27) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4a: Earthâs earliest continental crust | >4.4-3.0 |
| 19 : Granitic intrusive rocks | |
| 20 : Acidic volcanic rocks | |
| Near-surface Processes | |
| 22 : Hydration and low-đ subsurface aqueous alteration (see also #23) | |
| 26 : Hadean detrital minerals | |
| High-đ alteration and/or metamorphism | |
| 31 : Thermally altered carbonate, phosphate, and iron formations | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Ferro-tschermakite
Place of Conservation of Type Material:
Type material is deposited in the collections of the Museo di Mineralogia, Sistema Museale di Ateneo, University of Pavia, catalogue number 2016-02
Empirical Formula of Type Material:
A(Na0.29K0.08)?=0.37 B(Ca1.69Fe2+0.11Mn2+0.02Na0.18)?=2.00C(Fe2+1.84Mg1.54Al1.33Fe3+0.24V3+0.01Ti0.04)?=5.00 T(Si6.15Al1.85)?=8.00O22
Reference:
Oberti, R., Boiocchi, M., Hawthorne, F.C., Ciriotti M.E. (2018) Ferro-tschermakite from the Ploumanac'h granitic complex, Brittany, France: mineral description. European Journal of Mineralogy: 30: 171â176.
Synonyms of Ferro-tschermakite
Other Language Names for Ferro-tschermakite
German:Ferrotschermakit
Russian:ЀДŃŃĐŸŃĐ”ŃĐŒĐ°ĐșĐžŃ
Simplified Chinese:ééééȘçł
ééééȘçł
ééééȘçł
Spanish:Ferrotschermakita
Relationship of Ferro-tschermakite to other Species
Member of:
Other Members of this group:
| Ferri-tschermakite | â»{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
| Tschermakite | â»(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
| 4 photos of Ferro-tschermakite associated with Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| 3 photos of Ferro-tschermakite associated with Actinolite | â»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| 1 photo of Ferro-tschermakite associated with Andradite | Ca3Fe3+2(SiO4)3 |
| 1 photo of Ferro-tschermakite associated with Tremolite | â»Ca2Mg5(Si8O22)(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 9.DE. | Clino-suenoite | â»{Mn2+2}{Mg5}(Si8O22)(OH)2 |
| 9.DE. | Scandio-winchite | â»(NaCa)(Mg4Sc)(Si8O22)(OH)2 |
| 9.DE. | Mangani-eckermannite | NaNa2(Mg4Mn3+)Si8O22(OH)2 |
| 9.DE.05 | Cummingtonite | â»{Mg2}{Mg5}(Si8O22)(OH)2 |
| 9.DE.05 | Clino-holmquistite Root Name Group | â»{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 |
| 9.DE.05 | Grunerite | â»{Fe2+2}{Fe2+5}(Si8O22)(OH)2 |
| 9.DE.05 | Permanganogrunerite | â»{Mn2+2}{Mn2+5}(Si8O22)(OH)2 |
| 9.DE.05 | Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 |
| 9.DE.10 | Actinolite | â»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| 9.DE.10 | Ferro-ferri-tschermakite | â»{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 |
| 9.DE.10 | Ferri-tschermakite | â»{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 |
| 9.DE.10 | Ferro-actinolite | â»Ca2Fe2+5(Si8O22)(OH)2 |
| 9.DE.10 | Ferro-hornblende | â»Ca2(Fe2+4Al)(Si7Al)O22(OH)2 |
| 9.DE.10 | Joesmithite | Pb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2 |
| 9.DE.10 | Magnesio-hornblende | â»Ca2(Mg4Al)(Si7Al)O22(OH)2 |
| 9.DE.10 | Tremolite | â»Ca2Mg5(Si8O22)(OH)2 |
| 9.DE.10 | Tschermakite | â»(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 |
| 9.DE.10 | Cannilloite | CaCa2(Mg4Al)(Si5Al3O22)OH2 |
| 9.DE.10 | Fluoro-cannilloite | CaCa2(Mg4Al)(Si5Al3)O22F2 |
| 9.DE.10 | Parvo-manganotremolite | â»{CaMn2+}{Mg5}(Si8O22)(OH)2 |
| 9.DE.10 | Fluoro-tremolite | â»Ca2Mg5(Si8O22)F2 |
| 9.DE.10 | Magnesio-fluoro-hornblende | â»Ca2Mg5(AlSi7O22)F2 |
| 9.DE.10 | Ferro-fluoro-hornblende | â»Ca2(Fe2+4Al)(AlSi7O22)F2 |
| 9.DE.10 | Ferro-ferri-hornblende | â»Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2 |
| 9.DE.10 | Magnesio-ferri-hornblende | â»Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2 |
| 9.DE.10 | Ferro-cannilloite | CaCa2(Fe2+4Al)(Si5Al3O22)OH2 |
| 9.DE.10 | Ferro-ferri-cannilloite | CaCa2(Fe2+4Fe3+)(Si5Al3O22)OH2 |
| 9.DE.10 | Ferro-fluoro-actinolite | â»{Ca2}{Fe5}(Si8O22)F2 |
| 9.DE.10 | Magnesio-ferri-fluoro-hornblende | â»Ca2(Mg4Fe3+)(AlSi7O22)F2 |
| 9.DE.10 | Ferro-ferri-fluoro-hornblende | â»Ca2(Fe2+4Fe3+)(AlSi7O22)F2 |
| 9.DE.10 | Ferri-fluoro-tschermakite | â»{Ca2}{Mg3Fe3+2}(Al2Si6O22)F2 |
| 9.DE.10 | Ferro-ferri-fluoro-tschermakite | â»{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)F2 |
| 9.DE.10 | Ferro-fluoro-tschermakite | â»{Ca2}{Fe2+3Al2}(Al2Si6O22)F2 |
| 9.DE.10 | Fluoro-tschermakite | â»{Ca2}{Mg3Al2}(Al2Si6O22)F2 |
| 9.DE.10 | Clino-ferro-suenoite | â»{Mn2+2}{Fe2+5}(Si8O22)(OH)2 |
| 9.DE.15 | Edenite | NaCa2Mg5(Si7Al)O22(OH)2 |
| 9.DE.15 | Ferro-edenite | NaCa2Fe2+5(Si7Al)O22(OH)2 |
| 9.DE.15 | Ferro-kaersutite | NaCa2{Fe2+3AlTi}(Si6Al2O22)O2 |
| 9.DE.15 | Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Hastingsite | NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 |
| 9.DE.15 | Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Sadanagaite | {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2 |
| 9.DE.15 | Fluoro-edenite | NaCa2Mg5(Si7Al)O22F2 |
| 9.DE.15 | Potassic-ferro-ferri-sadanagaite | {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Ferro-ferri-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Potassic-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Potassic-pargasite | KCa2(Mg4Al)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Potassic-ferro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Magnesio-fluoro-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22F2 |
| 9.DE.15 | Ferro-chloro-pargasite | NaCa2(Fe2+4Al)(Al2Si6O22)Cl2 |
| 9.DE.15 | Potassic-fluoro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22F2 |
| 9.DE.15 | Potassic-chloro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2 |
| 9.DE.15 | Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 |
| 9.DE.15 | Parvo-mangano-edenite | {Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2 |
| 9.DE.15 | Fluoro-hastingsite | NaCa2(Fe2+4Fe3+)(Al2Si6O22)F2 |
| 9.DE.15 | Potassic-chloro-pargasite | KCa2(Mg4Al)(Si6Al2)O22Cl2 |
| 9.DE.15 | Ferro-fluoro-pargasite | (Na)(Ca2)(Fe2+4Al)(Al2Si6O22)F2 |
| 9.DE.15 | Potassic-ferro-chloro-edenite | KCa2Fe2+5(AlSi7O22)Cl2 |
| 9.DE.15 | Potassic-magnesio-hastingsite | KCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Potassic-ferro-pargasite | KCa2(Fe2+4Al)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Potassic-hastingsite | KCa2(Fe2+4Fe3+)(Al2Si6O22)(OH)2 |
| 9.DE.15 | Chromio-pargasite | NaCa2(Mg4Cr)(Si6Al2)O22(OH)2 |
| 9.DE.15 | Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 |
| 9.DE.15 | Ferri-kaersutite | NaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 |
| 9.DE.15 | Ferro-fluoro-edenite | NaCa2Fe2+5(AlSi7O22)F2 |
| 9.DE.15 | Ferri-sadanagaite | {Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Ferro-sadanagaite | {Na}{Ca2}{Fe3Al2}(Al3Si5O22)(OH)2 |
| 9.DE.15 | Ferri-fluoro-sadanagaite | {Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)F2 |
| 9.DE.15 | Ferro-ferri-fluoro-sadanagaite | {Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)F2 |
| 9.DE.15 | Ferro-fluoro-sadanagaite | {Na}{Ca2}{Fe2+3Al2}(Al3Si5O22)F2 |
| 9.DE.15 | Fluoro-sadanagaite | {Na}{Ca2}{Mg3Al2}(Al3Si5O22)F2 |
| 9.DE.15 | Potassic-chloro-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)Cl2 |
| 9.DE.15 | Potassic-ferro-chloro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)Cl2 |
| 9.DE.15 | Oxo-magnesio-hastingsite | NaCa2(Mg3(Fe3+2-x,Tix))5(Si6Al2O22)O2 |
| 9.DE.15 | Unnamed (F-dominant analogue of Ferri-kaersutite) | (Na,K)Ca2[Mg3(Fe3+,Fe2+)Ti](Si6Al2O22)(F,O)2 |
| 9.DE.15 | Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 |
| 9.DE.15 | Mangani-pargasite | NaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2 |
| 9.DE.20 | Potassic-ferro-ferri-katophorite | {K}{CaNa}{Fe2+4Fe3+}[(AlSi7)O22](OH)2 |
| 9.DE.20 | Ferro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Barroisite | â»{CaNa}{Mg3Al2}(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferro-ferri-barroisite | â»(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferro-ferri-winchite | â»[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2 |
| 9.DE.20 | Ferri-barroisite | â»(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferro-ferri-taramite | Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Ferro-ferri-katophorite | Na(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2 |
| 9.DE.20 | Ferro-barroisite | â»{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 |
| 9.DE.20 | Ferro-winchite | â»{CaNa}{Fe2+4Al}(Si8O22)(OH)2 |
| 9.DE.20 | Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 |
| 9.DE.20 | Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
| 9.DE.20 | Ferri-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Magnesiotaramite | {Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2 |
| 9.DE.20 | Richterite | Na(NaCa)Mg5(Si8O22)(OH)2 |
| 9.DE.20 | Winchite | â»{CaNa}{Mg4Al}(Si8O22)(OH)2 |
| 9.DE.20 | Taramite | Na(CaNa)(Mg3Al2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Fluoro-richterite | {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
| 9.DE.20 | Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 |
| 9.DE.20 | Potassic-fluoro-richterite | {K}{CaNa}{Mg5}(Si8O22)(F,OH)2 |
| 9.DE.20 | Potassic-richterite | {K}{CaNa}{Mg5}Si8O22(OH)2 |
| 9.DE.20 | Potassic-fluoro-katophorite | K(CaNa)(Mg4Al)(AlSi7O22)F2 |
| 9.DE.20 | Ferro-fluoro-katophorite | Na(CaNa)(Fe2+4Al)(AlSi7O22)F2 |
| 9.DE.20 | Ferro-ferri-fluoro-katophorite | Na(CaNa)(Fe2+4Fe3+)(AlSi7O22)F2 |
| 9.DE.20 | Ferri-ghoseite | â»[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 |
| 9.DE.20 | Ferri-winchite | â»(NaCa)(Mg4Fe3+)Si8O22(OH)2 |
| 9.DE.20 | Fluoro-taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2 |
| 9.DE.20 | Ferro-fluoro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)F2 |
| 9.DE.20 | Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 |
| 9.DE.20 | Potassic-ferri-katophorite | K(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 |
| 9.DE.20 | Potassic-ferro-richterite | {K}{CaNa}{Fe2+5}Si8O22(OH)2 |
| 9.DE.20 | Ferri-fluoro-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2 |
| 9.DE.20 | Potassic-ferro-taramite | K{CaNa}{Fe2+3Al2}{Si6Al2}O22(OH)2 |
| 9.DE.20 | Fluoro-winchite | â»{CaNa}{Mg4Al}(Si8O22)F2 |
| 9.DE.20 | Ferro-fluoro-winchite | â»{CaNa}{Fe2+4Al}(Si8O22)F2 |
| 9.DE.20 | Ferri-fluoro-barroisite | â»{CaNa}{Mg3Fe3+2}(AlSi7O22)F2 |
| 9.DE.20 | Ferro-fluoro-barroisite | â»{CaNa}{Fe2+3Al2}(AlSi7O22)F2 |
| 9.DE.20 | Ferro-ferri-fluoro-barroisite | â»{CaNa}{Fe2+3Fe3+2}(AlSi7O22)F2 |
| 9.DE.20 | Fluoro-barroisite | â»{CaNa}{Mg3Al2}(AlSi7O22)F2 |
| 9.DE.20 | Ferri-fluoro-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)F2 |
| 9.DE.20 | Ferro-ferri-fluoro-taramite | Na(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)F2 |
| 9.DE.20 | Ferro-fluoro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)F2 |
| 9.DE.20 | Potassic-ferri-taramite | K(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH) |
| 9.DE.20 | Ghoseite | â»[Mn2+Na][Mg4Al]Si8O22(OH)2 |
| 9.DE.20 | Potassic-ferro-ferri-taramite | K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2 |
| 9.DE.20 | Clinoferroholmquistite | â»Li2[Fe2+3Al2]Si8O22(OH,F)2 |
| 9.DE.20 | Hjalmarite | {Na}(NaMn}{Mg5}Si8O22(OH)2 |
| 9.DE.25 | Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 9.DE.25 | Eckermannite | NaNa2(Mg4Al}Si8O22(OH)2 |
| 9.DE.25 | Ferro-eckermannite | NaNa2(Fe2+4Al)Si8O22(OH)2 |
| 9.DE.25 | Ferro-glaucophane | â»[Na2][Fe2+3Al2]Si8O22(OH)2 |
| 9.DE.25 | Glaucophane | â»[Na2][Mg3Al2]Si8O22(OH)2 |
| 9.DE.25 | Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Mangano-ferri-eckermannite | {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2 |
| 9.DE.25 | Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Magnesio-riebeckite | â»{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 |
| 9.DE.25 | Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 |
| 9.DE.25 | NybĂžite | NaNa2(Mg3Al2)(AlSi7O22)(OH)2 |
| 9.DE.25 | Riebeckite | â»[Na2][Fe2+3Fe3+2]Si8O22(OH)2 |
| 9.DE.25 | Mangano-mangani-ungarettiite | NaNa2(Mn2+2Mn3+3)(Si8O22)O2 |
| 9.DE.25 | Ferro-ferri-nybĂžite | NaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2 |
| 9.DE.25 | Clino-ferro-ferri-holmquistite | â»{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
| 9.DE.25 | Ferri-nybĂžite | NaNa2(Mg3Fe3+2](AlSi7O22)(OH)2 |
| 9.DE.25 | Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 |
| 9.DE.25 | Sodic-ferri-clinoferroholmquistite | Na0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 |
| 9.DE.25 | Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 |
| 9.DE.25 | Ferri-pedrizite | [Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Potassic-ferri-leakeite | [K][Na2][Mg2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Fluoro-nybĂžite | NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2 |
| 9.DE.25 | Mangano-ferri-fluoro-leakeite | NaNa2(Mn2+2Fe3+2Li)[Si8O22]F2 |
| 9.DE.25 | Clino-fluoro-holmquistite | â»{Li2}{Mg3Al2}(Si8O22)F2 |
| 9.DE.25 | Mangani-dellaventuraite | NaNa2(MgMn3+2Ti4+Li)Si8O22O2 |
| 9.DE.25 | Fluoro-pedrizite | NaLi2(Mg2Al2Li)(Si8O22)F2 |
| 9.DE.25 | Potassic-arfvedsonite | [(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2 |
| 9.DE.25 | Mangani-obertiite | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 |
| 9.DE.25 | Ferro-nybĂžite | NaNa2(Fe2+3Al2)(AlSi7)O22(OH)2 |
| 9.DE.25 | Clino-sodic-fluoro-holmquistite | {Na}{Li2}{Mg4Al}(Si8O22)F2 |
| 9.DE.25 | Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] |
| 9.DE.25 | Ferro-ferri-pedrizite | [Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2 |
| 9.DE.25 | Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 |
| 9.DE.25 | Ferro-fluoro-glaucophane | â»[Na2][Fe2+3Al2]Si8O22F2 |
| 9.DE.25 | Pedrizite | NaLi2(LiMg2Al2)(Si8O22)(OH)2 |
| 9.DE.25 | Ferro-pedrizite | NaLi2(Fe2+2Al2Li)Si8O22(OH)2 |
| 9.DE.25 | Ferro-fluoro-pedrizite | Na(Li2)(Fe2+2Al2Li)[Si8O22]F2 |
| 9.DE.25 | Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 |
| 9.DE.25 | Ferro-ferri-obertiite | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 |
| 9.DE.25 | Fluoro-glaucophane | â»[Na2][Mg3Al2]Si8O22F2 |
| 9.DE.25 | Fluoro-riebeckite | â»{Na2}{Fe2+3Fe3+2}(Si8O22)F2 |
| 9.DE.25 | Magnesio-fluoro-riebeckite | â»{Na2}{Mg3Fe3+2}(Si8O22)F2 |
| 9.DE.25 | Fluoro-eckermannite | NaNa2(Mg4Al}Si8O22F2 |
| 9.DE.25 | Ferro-fluoro-eckermannite | NaNa2(Fe2+4Al}Si8O22F2 |
| 9.DE.25 | Fluoro-arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22F2 |
| 9.DE.25 | Ferri-fluoro-nybĂžite | NaNa2(Mg3Fe3+2)(AlSi7O22)F2 |
| 9.DE.25 | Ferro-ferri-fluoro-nybĂžite | NaNa2(Fe2+3Fe3+2)(AlSi7O22)F2 |
| 9.DE.25 | Ferro-fluoro-nybĂžite | NaNa2(Fe2+3Al2)(AlSi7O22)F2 |
| 9.DE.25 | Ferro-leakeite | NaNa2(Fe2+2Al2Li)(Si8O22)(OH)2 |
| 9.DE.25 | Leakeite | NaNa2(Mg2Al2Li)(Si8O22)(OH)2 |
| 9.DE.25 | Potassic-leakeite | KNa2(Mg2Al2Li)(Si8O22)(OH)2 |
| 9.DE.25 | Ferri-fluoro-pedrizite | NaLi2(LiMg2Fe3+2)(Si8O22)F2 |
| 9.DE.25 | Ferro-ferri-fluoro-pedrizite | NaLi2(LiFe2+2Fe3+2)(Si8O22)F2 |
| 9.DE.25 | Clino-ferro-ferri-fluoro-holmquistite | â»{Li2}{Fe2+3Fe3+2}(Si8O22)F2 |
| 9.DE.25 | Clino-ferri-fluoro-holmquistite | â»{Li2}{Mg3Fe3+2}(Si8O22)F2 |
| 9.DE.25 | Clino-ferro-fluoro-holmquistite | â»{Li2}{Fe2+3Al2}(Si8O22)F2 |
| 9.DE.25 | Ferri-obertiite | NaNa2(Mg3Fe3+Ti)Si8O22O2 |
| 9.DE.25 | Oxo-mangani-leakeite | NaNa2(Mn3+4Li)Si8O22O2 |
| 9.DE.25 | Oxo-pargasite | NaCa2(Mg3(Al2-x,Tix))5(Si6Al2O22)O2 |
| 9.DE.25 | Unnamed (Possible K-analogue of Ferri-obertiite) | KNa2((Mg,Fe,Na)3Fe3+(Ti,Fe))Si8O22(O,F)2 |
| 9.DE.25 | Potassic-mangano-mangani-ungarettiite | KNa2(Mn2+2Mn3+3)Si8O22O2 |
| 9.DE.25 | Potassic-jeanlouisite | K(NaCa)(Mg4Ti)Si8O22O2 |
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.
Internet Links for Ferro-tschermakite
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https://www.mindat.org/min-1532.html
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References for Ferro-tschermakite
Reference List:
Hawthorne, F. C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist, 44 (1) 1-21 doi:10.2113/gscanmin.44.1.1
Ishida, K. (2006) Assignment of infrared OH-stretching bands in calcic amphiboles through deuteration and heat treatment. American Mineralogist, 91 (5) 871-879 doi:10.2138/am.2006.1774
Hawthorne, F. C., Oberti, R., Harlow, G. E., Maresch, W. V., Martin, R. F., Schumacher, J. C., Welch, M. D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist, 97 (11) 2031-2048 doi:10.2138/am.2012.4276
Localities for Ferro-tschermakite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Australia | |
| |
| Gulson et al. (1985) | |
| G L Morvell (1976) +1 other reference |
| Steadman et al. (2014) |
| Steadman et al. (2014) |
Brazil | |
| [[1]]Santos et al. (2020) |
| Jost et al. (2001) |
| Revista Brasileirade GeociĂȘncias 30 (3) |
| Souza Neto et al. (2008) |
Canada | |
| Samson I M et al. (1999) |
| Szentpeteri et al. (2003) |
| McCormick et al. (1999) |
| Kuhns et al. (1994) |
| Econ Geol (1993) |
| Guha et al (1991) |
China | |
| Li et al. (2022) |
| Yiming Zhao and Daxin Li (2003) +1 other reference |
| Yiming Zhao and Daxin Li (2003) |
Czech Republic | |
| ZimĂĄk (ÄeskĂĄ republika) |
| DolnĂÄek Z et al. (2020) |
Egypt | |
| Mona Kabesh (2012) |
Finland | |
| SipilÀ |
France (TL) | |
| Mineralogical Magazine: 81: 737â742 +1 other reference |
| Eur. J. Mineral. |
Germany | |
| Christian Rewitzer (personal collection/dealer) |
Namibia | |
| www.excaliburmineral.com/mind-j.htm. |
Poland | |
| Gil et al. (2022) |
| DHZ |
Russia | |
| Bazai et al. (2009) |
| Ivashchenko et al. (2018, June) |
Slovakia | |
| SpiĆĄak J. |
| MyĆĄÄŸan et al. (2021) |
Sweden | |
| Valentin Alain (2014) |
Switzerland | |
| Stalder et al. (1998) |
USA | |
| Caine et al. (2010) |
| Mineralogical Society of America - ... |
| Tracy et al. (2003) +1 other reference |
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Las Tapias Mine, Las Tapias, Rosas District, San Javier Department, CĂłrdoba Province, Argentina