Ferro-tschermakite
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About Ferro-tschermakite
Gustav Tschermak
Formula:
◻{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 ☐(Ca2)(Fe2+3AlFe3+)(Al2Si6O22)(OH)2 to ☐(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.
Compositionally similar to ferro-pargasite.
May be confused with Ca-bearing almandine.
1) The formula is changed from ☐(Ca2)(Fe2+3AlFe3+)(Al2Si6O22)(OH)2 to ☐(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.
Compositionally similar to ferro-pargasite.
May be confused with Ca-bearing almandine.
Classification of Ferro-tschermakite
Approved
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.
8/F.10-70
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
Pronounciation of Ferro-tschermakite
Pronounciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon & Katya 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
Chemical Properties of Ferro-tschermakite
Formula:
◻{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
IMA Formula:
◻Ca2(Fe2+3Al2)(Si6Al2)O22(OH)2
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 ų
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.359 Å | (100) |
| 3.388 Å | (27) |
| 3.098 Å | (55) |
| 2.708 Å | (87) |
| 2.595 Å | (41) |
| 2.552 Å | (43) |
| 2.330 Å | (33) |
| 2.159 Å | (27) |
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: 171–176.
Synonyms of Ferro-tschermakite
Other Language Names for Ferro-tschermakite
Relationship of Ferro-tschermakite to other Species
Member of:
Other Members of this group:
| Ferri-fluoro-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)F2 | |
| Ferri-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
| Ferro-ferri-fluoro-tschermakite | ◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)F2 | |
| Ferro-ferri-tschermakite | ◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
| Ferro-fluoro-tschermakite | ◻{Ca2}{Fe2+3Al2}(Al2Si6O22)F2 | |
| Fluoro-tschermakite | ◻{Ca2}{Mg3Al2}(Al2Si6O22)F2 | |
| Tschermakite | ◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Ferro-tschermakite associated with Axinite-(Fe) | Ca2Fe2+Al2BSi4O15OH |
| 2 photos of Ferro-tschermakite associated with Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2 |
Related Minerals - Nickel-Strunz Grouping
| 9.DE. | Clino-suenoite | ◻{Mn2+2}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.05 | Cummingtonite | ◻{Mg2}{Mg5}(Si8O22)(OH)2 | Mon. |
| 9.DE.05 | Clino-holmquistite Root Name Group | ◻{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2 | Mon. |
| 9.DE.05 | Grunerite | ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.05 | Permanganogrunerite | ◻{Mn2+2}{Mn2+5}(Si8O22)(OH)2 | Mon. |
| 9.DE.05 | Ferri-fluoro-leakeite | {Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2 | Mon. 2/m : B2/m |
| 9.DE.10 | Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2 | Mon. 2/m : B2/m |
| 9.DE.10 | Ferri-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
| 9.DE.10 | Ferro-actinolite | ◻Ca2Fe2+5(Si8O22)OH2 | Mon. |
| 9.DE.10 | Ferro-hornblende | ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2 | Mon. |
| 9.DE.10 | Joesmithite | Pb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2 | Mon. |
| 9.DE.10 | Magnesio-hornblende | ◻Ca2(Mg4Al)(Si7Al)O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.10 | Tremolite | ◻{Ca2}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.10 | Tschermakite | ◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.10 | Cannilloite | CaCa2(Mg4Al)(Si5Al3O22)OH2 | Mon. |
| 9.DE.10 | Fluoro-cannilloite | CaCa2(Mg4Al)(Si5Al3)O22F2 | Mon. |
| 9.DE.10 | Parvo-manganotremolite | ◻{CaMn2+}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.10 | Fluoro-tremolite | ◻{Ca2}{Mg5}(Si8O22)F2 | Mon. 2/m : B2/m |
| 9.DE.10 | Ferro-ferri-hornblende | ◻Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.15 | Edenite | NaCa2Mg5(Si7Al)O22OH2 | Mon. |
| 9.DE.15 | Ferro-edenite | NaCa2Fe2+5(Si7Al)O22OH2 | Mon. |
| 9.DE.15 | Ferro-kaersutite | NaCa2{Fe2+3AlTi}(Si6Al2O22)O2 | Mon. |
| 9.DE.15 | Ferro-pargasite | NaCa2(Fe2+4Al)(Si6Al2)O22(OH)2 | Mon. |
| 9.DE.15 | Hastingsite | NaCa2(Fe2+4Fe3+)(Si6Al2)O22OH2 | Mon. |
| 9.DE.15 | Kaersutite | NaCa2(Mg3AlTi4+)(Si6Al2)O22O2 | Mon. |
| 9.DE.15 | Magnesio-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 | Mon. |
| 9.DE.15 | Pargasite | NaCa2(Mg4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.15 | Sadanagaite | {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2 | Mon. |
| 9.DE.15 | Fluoro-edenite | NaCa2Mg5(Si7Al)O22F2 | Mon. 2/m : P2/m |
| 9.DE.15 | Potassic-ferro-ferri-sadanagaite | {K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2 | Mon. |
| 9.DE.15 | Potassic-sadanagaite | {K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2 | Mon. |
| 9.DE.15 | Potassic-pargasite | KCa2(Mg4Al)(Si6Al2)O22(OH)2 | Mon. |
| 9.DE.15 | Potassic-ferro-sadanagaite | {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2 | Mon. |
| 9.DE.15 | Magnesio-fluoro-hastingsite | NaCa2(Mg4Fe3+)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
| 9.DE.15 | Potassic-fluoro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
| 9.DE.15 | Potassic-chloro-hastingsite | KCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2 | Mon. 2/m : B2/m |
| 9.DE.15 | Fluoro-pargasite | NaCa2(Mg4Al)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
| 9.DE.15 | Parvo-mangano-edenite | {Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.15 | Potassic-chloro-pargasite | KCa2(Mg4Al)(Si6Al2)O22Cl2 | Mon. 2/m : B2/m |
| 9.DE.15 | Potassic-ferro-chloro-edenite | KCa2Fe2+5(AlSi7O22)Cl2 | |
| 9.DE.15 | Potassic-magnesio-hastingsite | KCa2(Mg4Fe3+)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.15 | Potassic-ferro-pargasite | KCa2(Fe2+4Al)(Si6Al2)O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.15 | Chromio-pargasite | {Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.15 | Potassic-fluoro-pargasite | KCa2(Mg4Al)(Si6Al2)O22F2 | Mon. 2/m : B2/m |
| 9.DE.15 | Ferri-kaersutite | NaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 | Mon. 2/m : B2/m |
| 9.DE.15 | Vanadio-pargasite | NaCa2(Mg3+4V)(Al2Si6)O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Ferro-taramite | Na(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Barroisite | ◻{CaNa}{Mg3Al2}(AlSi7O22)(OH)2 | Mon. |
| 9.DE.20 | Ferro-ferri-barroisite | ◻(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2 | |
| 9.DE.20 | Ferro-ferri-winchite | ◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2 | |
| 9.DE.20 | Ferri-barroisite | ◻(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 | Mon. 2/m : B2/m |
| 9.DE.20 | Ferro-barroisite | ◻{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Ferro-richterite | {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 | Mon. |
| 9.DE.20 | Ferro-winchite | ◻{CaNa}{Fe2+4Al}(Si8O22)(OH)2 | Mon. |
| 9.DE.20 | Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 | Mon. |
| 9.DE.20 | Ferri-taramite | Na(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2 | Mon. |
| 9.DE.20 | Magnesiotaramite | {Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2 | Mon. |
| 9.DE.20 | Richterite | {Na}{NaCa}{Mg5}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Winchite | ◻{CaNa}{Mg4Al}(Si8O22)(OH)2 | Mon. 2/m |
| 9.DE.20 | Taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Fluoro-richterite | {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 | Mon. 2/m |
| 9.DE.20 | Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Potassic-fluoro-richterite | {K}{CaNa}{Mg5}(Si8O22)(F,OH)2 | Mon. |
| 9.DE.20 | Potassic-richterite | {K}{CaNa}{Mg5}Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Ferri-ghoseite | ◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2 | Mon. 2/m |
| 9.DE.20 | Ferri-winchite | ◻(NaCa)(Mg4Fe3+)Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.20 | Fluoro-taramite | {Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2 | Mon. 2/m : B2/m |
| 9.DE.20 | Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 | Mon. |
| 9.DE.20 | Ferri-fluoro-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2 | Mon. 2/m : B2/m |
| 9.DE.25 | Arfvedsonite | [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Eckermannite | NaNa2(Mg4Al}Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Ferro-eckermannite | NaNa2(Fe2+4Al)Si8O22(OH)2 | Mon. |
| 9.DE.25 | Ferro-glaucophane | ◻[Na2][Fe2+3Al2]Si8O22(OH)2 | Mon. |
| 9.DE.25 | Glaucophane | ◻[Na2][Mg3Al2]Si8O22(OH)2 | Mon. |
| 9.DE.25 | Potassic-mangani-leakeite | [(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Mangano-ferri-eckermannite | {Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2 | Mon. |
| 9.DE.25 | Ferri-leakeite | [Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. |
| 9.DE.25 | Magnesio-riebeckite | ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2 | Mon. |
| 9.DE.25 | Magnesio-arfvedsonite | {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Nybøite | NaNa2(Mg3Al2)(AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Riebeckite | ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Mangano-mangani-ungarettiite | NaNa2(Mn2+2Mn3+3)(Si8O22)O2 | Mon. |
| 9.DE.25 | Ferro-ferri-nybøite | NaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Clino-ferro-ferri-holmquistite | ◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Ferri-nybøite | NaNa2(Mg3Fe3+2](AlSi7O22)(OH)2 | Mon. |
| 9.DE.25 | Ferro-ferri-leakeite | [Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2 | Mon. |
| 9.DE.25 | Ferro-ferri-fluoro-leakeite | Na(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2 | Mon. |
| 9.DE.25 | Sodic-ferri-clinoferroholmquistite | Na0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2 | Mon. |
| 9.DE.25 | Magnesio-fluoro-arfvedsonite | [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2 | Mon. |
| 9.DE.25 | Ferri-pedrizite | [Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. |
| 9.DE.25 | Potassic-ferri-leakeite | [K][Na2][Mg2Fe3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Fluoro-nybøite | NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Mangani-dellaventuraite | NaNa2(MgMn3+2Ti4+Li)Si8O22O2 | Mon. 2/m : B2/m |
| 9.DE.25 | Fluoro-pedrizite | NaLi2(Mg2Al2Li)(Si8O22)F2 | Mon. 2/m : B2/m |
| 9.DE.25 | Potassic-arfvedsonite | [(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Mangani-obertiite | NaNa2(Mg3Mn3+Ti4+)Si8O22O2 | Mon. 2/m : B2/m |
| 9.DE.25 | Potassic-magnesio-fluoro-arfvedsonite | [(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2] | Mon. 2/m : B2/m |
| 9.DE.25 | Ferro-ferri-pedrizite | [Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Potassic-magnesio-arfvedsonite | [K][Na2][Mg4Fe3+]Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Pedrizite | NaLi2(LiMg2Al2)(Si8O22)(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Ferro-pedrizite | NaLi2(Fe2+2Al2Li)Si8O22(OH)2 | Mon. 2/m : B2/m |
| 9.DE.25 | Ferro-fluoro-pedrizite | Na(Li2)(Fe2+2Al2Li)[Si8O22]F2 | Mon. 2/m : B2/m |
| 9.DE.25 | Fluoro-leakeite | NaNa2(Mg2Al2Li)(Si8O22)F2 | Mon. 2/m : B2/m |
| 9.DE.25 | Ferro-ferri-obertiite | NaNa2(Fe2+3Fe3+Ti)Si8O22O2 | Mon. 2/m : B2/m |
| 9.DE.25 | Ferri-obertiite | NaNa2(Mg3Fe3+Ti)Si8O22O2 | Mon. 2/m : B2/m |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 16.21.1 | Esseneite | CaFe3+[AlSiO6] | Mon. 2/m : B2/b |
| 16.21.2 | Epidote | {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH) | Mon. 2/m : P21/m |
| 16.21.4 | Ferro-aluminotschermakite | ◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2 | Mon. |
| 16.21.5 | Ferri-tschermakite | ◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
| 16.21.6 | Ferro-ferri-tschermakite | ◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2 | Mon. |
| 16.21.7 | Alumino-ferro-hornblende | ◻{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2 | |
| 16.21.8 | Pumpellyite-(Fe2+) | Ca2Fe2+Al2[Si2O6OH][SiO4](OH)2(OH) | Mon. |
| 16.21.8 | Pumpellyite-(Fe3+) | Ca2Fe3+Al2[Si2O6OH][SiO4](OH)2O | Mon. |
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.
References for Ferro-tschermakite
Reference List:
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Hawthorne, F.C., Grundy, H.D. (1973) The crystal chemistry of the amphiboles. I. Refinement of the crystal structure of ferrotschermakite. Mineralogical Magazine: 39: 36-48.
Mandarino, J.A. (1998) The Second List of Additions and Corrections to the Glossary of Mineral Species (1995). The Amphibole Group. Mineralogical Record: 29: 169-174.
Hawthorne, F.C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist: 44: 1-21.
Ishida, K., Hawthorne, F.C. (2006) Assignment of infrared OH-stretching bands in calcic amphiboles through deuteration and heat treatment. American Mineralogist: 91: 871-879.
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: 2031-2048.
Oberti, R., Boiocchi, M., Hawthorne, F.C. and Ciriotti, M.E. (2017) Ferro-tschermakite, IMA 2016-116. CNMNC Newsletter No. 37, June 2017, page 738; Mineralogical Magazine: 81: 737–742.
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: 171–176.
Internet Links for Ferro-tschermakite
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Localities for Ferro-tschermakite
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for 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 | |
| Econ Geol (1985) 80:488-496 |
| |
| G L Morvell (1976). Mineral Occurrences at Dookie, Victoria. Australian Mineralogist No.6 Oct/Nov 1976, pp. 21-23; G.L. Morvell (1976), Mineral Occurrences at Dookie, Victoria. Australian Mineralogist No.6 Oct/Nov 1976 pp. 21-23 |
| Steadman, J. A., Large, R. R., Davidson, G. J., Bull, S. W., Thompson, J., Ireland, T. R., & Holden, P. (2014). Paragenesis and composition of ore minerals in the Randalls BIF-hosted gold deposits, Yilgarn Craton, Western Australia: Implications for the timing of deposit formation and constraints on gold sources. Precambrian Research, 243, 110-132. |
| Steadman, J.A., Large, A.A., Davidson, G.J., Bull, S.W., Thompson, J., Ireland, T.R., Holden, P. (2014), Paragenesis and Composition of Ore Minerals in the Randalls BIF Hosted Gold Deposits Yilgarn Craton Western Australia: implications for timing of deposit formation and constraints in gold source, Precambrian Research, 243, pp110-132, 2014 |
Brazil | |
| Jost, H., and de Tarso Ferro de Oliveira Fortes, P. (2001): Mineralium Deposita 36, 358-376. |
| Revista Brasileirade Geociências 30(3):367-370 (2000) |
| Souza Neto, J.A., Legrand, J.M., Volfinger, M., Pascal, M.-L., and Sonnet, P. (2008): Mineralium Deposita 43, 185-205. |
Canada | |
| Samson I M, Blackburn W H, Gagnon J E (1999) Paragenesis and composition of amphibole and biotite in the MacLellan gold deposit, Lynn Lake greenstone belt, Manitoba, Canada, The Canadian Mineralogist 37, 1405-1421 |
| Szentpeteri, K., Molnar, Watkinson & Jones (2003) Geology and high grade hydrothermal PGE mineralization of the Vermilion quartz diorite offset dike, Sudbury, Canada, P. 644. |
| McCormick, K.A. and McDonald, A. (1999) Chlorine-bearing amphiboles from the Fraser mine, Sudbury, Ontario, Canada: Description and crystal chemistry. Canadian Mineralogist, 37, 1385-1403. |
| Econ Geol (1994) 89:720-756 |
| Econ Geol (1993) 88:817-836 |
| Guha et al (1991) Geological Survey of Canada Open File Report 2158 pp97-103 |
China | |
| Yiming Zhao and Daxin Li (2003): Mineral Deposits 22(4), 345-359; Zhenhua Zhou, Hongwei Liu, Guoxiong Chang, Linsu Li, Tao Li, Yongjun Yang, Ruijun Zhang, and Xianhe Ji (2011): Acta Petrologica et Mineralogica 30(1), 97-112 |
| Yiming Zhao and Daxin Li (2003): Mineral Deposits 22(4), 345-359 |
Czech Republic | |
| Zimák, J.: Mineralogie železných rud na historickém ložisku Horní Hoštice v Rychlebských horách (Česká republika). Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2008, vol. 16, 2, 238-242. |
Egypt | |
| Mona Kabesh, Asran M. Asran and Ezzat Abdel Rahman (2012) Mineral chemistry of banded migmatites from Hafafit and Feiran areas, Egypt. Arabian Journal of Geosciences 1866-7511:1-13 |
Finland | |
| Sipilä, Pekka 1992. The Caledonian Halt-Ridnitsohkka igneous complex in Lapland. Geological Survey of Finland Bulletin 362, 75 p. 23 app. pages |
France (TL) | |
| Oberti, R., Boiocchi, M., Hawthorne, F.C. and Ciriotti, M.E. (2017)Ferro-tschermakite, IMA 2016-116. CNMNC Newsletter No. 37, June 2017, page 738; Mineralogical Magazine: 81: 737–742 |
| Eur. J. Mineral. , 1993, 5, pp. 879-891. |
Germany | |
| Christian Rewitzer (personal collection/dealer) |
Namibia | |
| www.excaliburmineral.com/mind-j.htm. |
Poland | |
| DHZ, Vol. 2B, 2nd ed., p. 249. |
Russia | |
| Ivashchenko, V. I., Bushmin, S. A., Ruchyev, A. M., Kornakov, A. S., Bogomolov, E. S., Savva, E. V., ... & Frolov, P. V. (2018, June). First Evidence of the Archean Age of Orogenic Gold of the Russian Part of the Karelian Craton (Fennoscandian Shield): Sm–Nd Mineral Isochron for Gold-Bearing Metasomatites of the Novye Peski Deposit. In Doklady Earth Sciences (Vol. 480, No. 2, pp. 804-809). Pleiades Publishing. |
Slovakia | |
| Spišak J., Hovorka D 2005.: Metabazity a metasedimenty z okolia ultrabázického telesa medzi Brezničkou a Kalinovom. Min.Slov., 37,1, 47-54 |
Sweden | |
| Valentin Alain (2014) Mineral Chemistry and Texture Paragenesis of Alteration Minerals in the Pahtohavare Cu-Au Deposit, Sweden. Masters Thesis Luleå University of Technology |
Switzerland | |
| Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 263. |
USA | |
| Caine, J.S., Manning, A.H., Berger, B.R., Kremer, Y., Guzman, M.A., Eberl, D.D., and Schuller, K. (2010): USGS Open-File Report 10-1008 |
| Handbook of Mineralogy |
| ROBERT J. TRACY and JAMES S. BEARD(2003): Manganoan kinoshitalite in Mn-rich marble and skarn from Virginia American Mineralogist Vol 88:pp740-747 ; Tracy, R. J., & Beard, J. S. (2003). Manganoan kinoshitalite in Mn-rich marble and skarn from Virginia. American Mineralogist, 88(5-6), 740-747. |
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