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Ferro-Ferri-tschermakite

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Formula:
☐{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2
Ferro-ferri-tschermakite is defined as a tschermakite group member with the following dominant elements:
C position: Fe as both the dominant divalent cation and trivalent cation.
W position: (OH) as the dominant anion
Colour:
greenish black
Hardness:
5 - 6
Crystal System:
Monoclinic
This page provides mineralogical data about Ferro-Ferri-tschermakite.


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Classification of Ferro-Ferri-tschermakiteHide

8/F.10-80

8 : Silicates
F : Inosilicates (chain and band) double chains [Si2O6]4-
10 : Amphibole group, Tremolite - Sadanagaite series
16.21.6

16 : Silicates Containing Aluminum and other Metals
21 : Aluminosilicates of Fe and Ca

Physical Properties of Ferro-Ferri-tschermakiteHide

Colour:
greenish black
Hardness:
5 - 6 on Mohs scale
Cleavage:
Distinct/Good

Chemical Properties of Ferro-Ferri-tschermakiteHide

Formula:
☐{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2

Ferro-ferri-tschermakite is defined as a tschermakite group member with the following dominant elements:
C position: Fe as both the dominant divalent cation and trivalent cation.
W position: (OH) as the dominant anion

Crystallography of Ferro-Ferri-tschermakiteHide

Crystal System:
Monoclinic

Synonyms of Ferro-Ferri-tschermakiteHide

Other Language Names for Ferro-Ferri-tschermakiteHide

Relationship of Ferro-Ferri-tschermakite to other SpeciesHide

Other Members of this group:
Ferri-fluoro-tschermakite☐{Ca2}{Mg3Fe3+2}(Al2Si6O22)F2
Ferri-tschermakite☐{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
Ferro-ferri-fluoro-tschermakite☐{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)F2
Ferro-fluoro-tschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)F2
Ferro-tschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
Fluoro-tschermakite☐{Ca2}{Mg3Al2}(Al2Si6O22)F2
Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m

Related Minerals - Nickel-Strunz Grouping (8th Edition)Hide

8/F.10-05Parvo-manganotremolite☐{CaMn2+}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
8/F.10-10Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
8/F.10-12Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2Mon. 2/m : B2/m
8/F.10-20Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2Mon. 2/m : B2/m
8/F.10-30Ferro-actinolite☐{Ca2}{Fe2+5}(Si8O22)(OH)2Mon.
8/F.10-40Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2Mon.
8/F.10-50Ferro-hornblende☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2Mon.
8/F.10-60Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
8/F.10-70Ferro-tschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
8/F.10-77Ferri-tschermakite☐{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
8/F.10-88Parvo-mangano-edenite{Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2Mon. 2/m : B2/m
8/F.10-90Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2Mon.
8/F.10-92Fluoro-edenite{Na}{Ca2}{Mg5}(AlSi7O22)(F,OH)2Mon. 2/m : P2/m
8/F.10-100Ferro-edenite{Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2Mon.
8/F.10-102Potassic-ferro-chloro-edenite{K}{Ca2}{Fe2+5}(AlSi7O22)(Cl,OH)2
8/F.10-103CannilloiteCa(Ca2)(Mg4Al)(Al3Si5O22)(OH)2Mon.
8/F.10-105Fluoro-cannilloite{Ca}{Ca2}{Mg4Al}(Al3Si5O22)(F,OH)2Mon.
8/F.10-110Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2Mon.
8/F.10-112Fluoro-pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(F,OH)2Mon. 2/m : B2/m
8/F.10-120Ferro-pargasite{Na}{Ca2}{Fe2+4Al}(Al2Si6O22)(OH)2Mon.
8/F.10-122Ferro-chloro-pargasiteNaCa2(Fe2+4Al)(Al2Si6O22)Cl2
8/F.10-125Potassic-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2Mon.
8/F.10-127Potassic-chloro-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)(Cl,OH)2
8/F.10-130Magnesio-hastingsite{Na}{Ca2}{Mg4Fe3+}(Al2Si6O22)(OH)2Mon.
8/F.10-132Magnesio-fluoro-hastingsite{Na}{Ca2}{Mg4Fe3+}(Al2Si6O22)F2Mon. 2/m : B2/m
8/F.10-135Potassic-magnesio-hastingsite{K}{Ca2}{Mg4Fe3+}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
8/F.10-140Hastingsite{Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2Mon.
8/F.10-145Potassic-fluoro-hastingsite{K}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(F,OH)2Mon. 2/m : B2/m
8/F.10-147Potassic-chloro-hastingsite{K}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(Cl,OH)2Mon. 2/m : B2/m
8/F.10-150Kaersutite{Na}{Ca2}{Mg3AlTi}(Al2Si6O22)O2 Mon.
8/F.10-160Ferro-kaersutite{Na}{Ca2}{Fe2+3AlTi}(Al2Si6O22)O2Mon.
8/F.10-175Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2Mon.
8/F.10-180Potassic-sadanagaite{K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2Mon.
8/F.10-200Potassic-ferro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2Mon.
8/F.10-210Ferro-ferri-sadanagaiteNaCa2(Fe2+3Fe3+2)(Al3Si5O22)(OH)2Mon.
8/F.10-220Potassic-ferro-ferri-sadanagaite{K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.21.1EsseneiteCaFe3+[AlSiO6]Mon. 2/m : B2/b
16.21.2Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
16.21.3Ferro-tschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
16.21.4Ferro-aluminotschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon.
16.21.5Ferri-tschermakite☐{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
16.21.7Alumino-ferro-hornblende☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
16.21.8Pumpellyite-(Fe2+)Ca2Fe2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
16.21.8Pumpellyite-(Fe3+)Ca2(Fe3+,Mg)(Al,Fe3+)2(Si2O7)(SiO4)(OH,O)2 · H2OMon.

Other InformationHide

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-Ferri-tschermakiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.

Internet Links for Ferro-Ferri-tschermakiteHide

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