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Tschermakite

A valid IMA mineral species
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About TschermakiteHide

09725920014947804537498.jpg
Gustav Tschermak von Seysenegg
Formula:
◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Colour:
Medium green to dark green to green-black to black, brown (rare).
Lustre:
Vitreous
Hardness:
5 - 6
Specific Gravity:
3.15
Crystal System:
Monoclinic
Name:
Named in honor of Gustav Tschermak von Sessenegg (19 April 1836, Littau, Moravia (now Czech Republic) - 4 May 1927, Vienna), Austrian mineralogist at the University of Vienna. He specialized in silicate minerals and meteorites. He established the journal Mineralogische Mitteilungen (Mineralogical Reports). The mineral silvialite is named after his daughter.
Tschermakite is defined as a Tschermakite Group member with Mg>Fe2+ and Al>Fe3+ in the C position. Tschermakite has been redefined in the 2012 Amphibole nomenclature in that:
1) The formula is changed from ☐(Ca2)(Mg3AlFe3+)(Al2Si6O22)(OH)2 to ☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2. Consequently all pre-2012 literature references to tschermakite should be checked to verify that Al>Fe3+ in the C position. If Fe3+>Al in the C position the material will be 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.


NOTES:
- Amphiboles from Longido District, Arusha Region, Tanzania are still erroneously labeled tschermakite or alumino-tschermakite. The identification of these amphiboles as pargasite are well documented by Simonet, Cedric (2000) and others.

- The tschermakite end-member composition is unstable, and 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).


Unique IdentifiersHide

Mindat ID:
4035
Long-form identifier:
mindat:1:1:4035:4
GUID
(UUID V4):
96b0427d-9a82-4f2f-a3b8-dee6baac2f8b

IMA Classification of TschermakiteHide

Approved
IMA status notes:
Renamed by the IMA
IMA Formula:
◻Ca2(Mg3Al2)(Si6Al2)O22(OH)2
Approval history:
Renamed by IMA: 2012

Classification of TschermakiteHide

9.DE.10

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
16.11.4

16 : Silicates Containing Aluminum and other Metals
11 : Aluminosilicates of Ca and Mg with or without alkalis

Mineral SymbolsHide

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.

SymbolSourceReference
TsrIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
TsKretz (1983)Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
TsSiivolam & 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
TsWhitney & 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
TsThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of TschermakiteHide

Vitreous
Transparency:
Transparent
Colour:
Medium green to dark green to green-black to black, brown (rare).
Streak:
Pale grey-green
Hardness:
5 - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {110}
Parting:
on {100}{001}
Density:
3.15 g/cm3 (Measured)    3.25 g/cm3 (Calculated)

Optical Data of TschermakiteHide

Type:
Biaxial (-)
RI values:
nα = 1.623 - 1.660 nβ = 1.630 - 1.680 nγ = 1.638 - 1.688
2V:
Measured: 60° to 90°
Max Birefringence:
δ = 0.015 - 0.028
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong
Pleochroism:
Visible
Comments:
In browns and greens

Chemistry of TschermakiteHide

Mindat Formula:
◻(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Common Impurities:
Ti,Mn,Na,K,H2O,Fe

Chemical AnalysisHide

Oxide wt%:
 1
P2O50.02 %
SiO242.86 %
TiO20.14 %
Al2O317.79 %
V2O30.01 %
Cr2O30.14 %
Mn2O3*0.14 %
Fe2O3*8.83 %
NiO0.03 %
MgO14.05 %
CaO10.99 %
SrO0.02 %
Na2O1.86 %
K2O0.17 %
H2O (by stoichiometry)2.08 %
Total:99.13 %
Empirical formulas:
Sample IDEmpirical Formula
1(Na0.18K0.03◻0.79)(Ca1.67Na0.33)(Mg2.97Al1.04Fe3+0.94Mn3+0.02Cr0.02Ti0.02)[Si6.07Al1.93O22]([OH]1.97O0.03)
Sample references:
IDLocalityReferenceNotes
1Corundum locality, Anavoha South, Fotadrevo, Ampanihy District, Atsimo-Andrefana, Madagascar
Frank K. Mazdab collectionsample FKM-24; https://www.rockptx.com/fkm-1-to-fkm-25/#FKM-24
corundum-bearing amphibolite (tschermakite+anorthite); amphibole normalized to 13eCNK; as a result of the normalization scheme, Fe and minor Mn calculated as Fe2O3 and Mn2O3 to satisfy charge balance. W-site O calculated as 2*normalized Ti.

Crystallography of TschermakiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.762(6) Å, b = 17.994(12) Å, c = 5.325(6) Å
β = 105.10(8)°
Ratio:
a:b:c = 0.543 : 1 : 0.296
Unit Cell V:
903.08 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Prismatic crystals, reaction rims on other minerals.
Twinning:
single or multiple parallel to {100}

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006297TschermakiteAbdu Y A, Hawthorne F C (2009) Crystal structure and Mossbauer spectroscopy of tschermakite from the ruby locality at Fiskenaesset, Greenland The Canadian Mineralogist 47 917-9262009Fiskenaesset, Greenland0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
- Å()
Comments:
No published X-ray powder diffraction data.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration4.566-4.550
6 : Secondary asteroid phases4.566-4.560
Stage 3a: Earth’s earliest Hadean crust>4.50
7 : Ultramafic igneous rocks
8 : Mafic igneous rocks
Stage 5: Initiation of plate tectonics<3.5-2.5
39 : High-𝑃 metamorphism (blueschist, eclogite, ultrahigh 𝑃 facies)
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Geological Setting:
Eclogites and other ultramafic rocks, amphibolites or other medium to high grade metamorphic rocks.

Synonyms of TschermakiteHide

Other Language Names for TschermakiteHide

Relationship of Tschermakite to other SpeciesHide

Other Members of this group:
Ferri-tschermakite◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
Ferro-tschermakite◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Tschermakite associated with Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
3 photos of Tschermakite associated with RubyAl2O3
1 photo of Tschermakite associated with Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
1 photo of Tschermakite associated with Almandine-Pyrope Series
1 photo of Tschermakite associated with CorundumAl2O3
1 photo of Tschermakite associated with AnorthiteCa(Al2Si2O8)

Related Minerals - Strunz-mindat GroupingHide

9.DE.Clino-suenoite◻{Mn2+2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.Scandio-winchite◻(NaCa)(Mg4Sc)(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.Mangani-eckermanniteNaNa2(Mg4Mn3+)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.05Cummingtonite◻{Mg2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Clino-holmquistite Root Name Group◻{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2Mon.
9.DE.05Grunerite◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Permanganogrunerite◻{Mn2+2}{Mn2+5}(Si8O22)(OH)2Mon.
9.DE.05Ferri-fluoro-leakeite{Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.10Ferro-ferri-tschermakite◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)(OH)2Mon.
9.DE.10Ferri-tschermakite◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
9.DE.10Ferro-actinolite◻Ca2Fe2+5(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Ferro-hornblende◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.10Ferro-tschermakite◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10JoesmithitePb2+Ca2(Mg3Fe3+2)(Si6Be2)O22(OH)2Mon. 2/m : P2/b
9.DE.10Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.10Tremolite◻Ca2Mg5(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10CannilloiteCaCa2(Mg4Al)(Si5Al3O22)OH2Mon.
9.DE.10Fluoro-cannilloiteCaCa2(Mg4Al)(Si5Al3)O22F2Mon. 2/m : B2/m
9.DE.10Parvo-manganotremolite◻{CaMn2+}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Fluoro-tremolite◻Ca2Mg5(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Magnesio-fluoro-hornblende◻Ca2Mg5(AlSi7O22)F2
9.DE.10Ferro-fluoro-hornblende◻Ca2(Fe2+4Al)(AlSi7O22)F2
9.DE.10Ferro-ferri-hornblende◻Ca2(Fe2+4Fe3+)(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.10Magnesio-ferri-hornblende◻Ca2(Mg4Fe3+)[(Si7Al)O22](OH)2Mon. 2/m : B2/m
9.DE.10Ferro-cannilloiteCaCa2(Fe2+4Al)(Si5Al3O22)OH2
9.DE.10Ferro-ferri-cannilloiteCaCa2(Fe2+4Fe3+)(Si5Al3O22)OH2
9.DE.10Ferro-fluoro-actinolite◻{Ca2}{Fe5}(Si8O22)F2
9.DE.10Magnesio-ferri-fluoro-hornblende◻Ca2(Mg4Fe3+)(AlSi7O22)F2Mon. 2/m : B2/m
9.DE.10Ferro-ferri-fluoro-hornblende◻Ca2(Fe2+4Fe3+)(AlSi7O22)F2
9.DE.10Ferri-fluoro-tschermakite◻{Ca2}{Mg3Fe3+2}(Al2Si6O22)F2
9.DE.10Ferro-ferri-fluoro-tschermakite◻{Ca2}{Fe2+3Fe3+2}(Al2Si6O22)F2
9.DE.10Ferro-fluoro-tschermakite◻{Ca2}{Fe2+3Al2}(Al2Si6O22)F2
9.DE.10Fluoro-tschermakite◻{Ca2}{Mg3Al2}(Al2Si6O22)F2
9.DE.10Clino-ferro-suenoite◻{Mn2+2}{Fe2+5}(Si8O22)(OH)2
9.DE.15EdeniteNaCa2Mg5(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.15Ferro-edeniteNaCa2Fe2+5(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.15Ferro-kaersutiteNaCa2{Fe2+3AlTi}(Si6Al2O22)O2Mon.
9.DE.15Ferro-pargasiteNaCa2(Fe2+4Al)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15HastingsiteNaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15KaersutiteNaCa2(Mg3AlTi4+)(Si6Al2)O22O2Mon. 2/m : B2/m
9.DE.15Magnesio-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15PargasiteNaCa2(Mg4Al)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2Mon.
9.DE.15Fluoro-edeniteNaCa2Mg5(Si7Al)O22F2Mon. 2/m : P2/m
9.DE.15Potassic-ferro-ferri-sadanagaite{K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2Mon. 2/m : B2/m
9.DE.15Ferro-ferri-sadanagaite{Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-sadanagaite{K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2Mon. 2
9.DE.15Potassic-pargasiteKCa2(Mg4Al)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-ferro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Magnesio-fluoro-hastingsiteNaCa2(Mg4Fe3+)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Ferro-chloro-pargasiteNaCa2(Fe2+4Al)(Al2Si6O22)Cl2
9.DE.15Potassic-fluoro-hastingsiteKCa2(Fe2+4Fe3+)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-hastingsiteKCa2(Fe2+4Fe3+)(Si6Al2)O22Cl2Mon. 2/m : B2/m
9.DE.15Fluoro-pargasiteNaCa2(Mg4Al)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Parvo-mangano-edenite{Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.15Fluoro-hastingsiteNaCa2(Fe2+4Fe3+)(Al2Si6O22)F2
9.DE.15Potassic-chloro-pargasiteKCa2(Mg4Al)(Si6Al2)O22Cl2Mon. 2/m : B2/m
9.DE.15Ferro-fluoro-pargasite(Na)(Ca2)(Fe2+4Al)(Al2Si6O22)F2
9.DE.15Potassic-ferro-chloro-edeniteKCa2Fe2+5(AlSi7O22)Cl2
9.DE.15Potassic-magnesio-hastingsiteKCa2(Mg4Fe3+)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-ferro-pargasiteKCa2(Fe2+4Al)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-hastingsiteKCa2(Fe2+4Fe3+)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.15Chromio-pargasiteNaCa2(Mg4Cr)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-fluoro-pargasiteKCa2(Mg4Al)(Si6Al2)O22F2Mon. 2/m : B2/m
9.DE.15Ferri-kaersutiteNaCa2(Mg3Fe3+Ti)(Si6Al2O22)O2 Mon. 2/m : B2/m
9.DE.15Ferro-fluoro-edeniteNaCa2Fe2+5(AlSi7O22)F2Mon. 2/m : B2/m
9.DE.15Ferri-sadanagaite{Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2
9.DE.15Ferro-sadanagaite{Na}{Ca2}{Fe3Al2}(Al3Si5O22)(OH)2
9.DE.15Ferri-fluoro-sadanagaite{Na}{Ca2}{Mg3Fe3+2}(Al3Si5O22)F2
9.DE.15Ferro-ferri-fluoro-sadanagaite{Na}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)F2
9.DE.15Ferro-fluoro-sadanagaite{Na}{Ca2}{Fe2+3Al2}(Al3Si5O22)F2
9.DE.15Fluoro-sadanagaite{Na}{Ca2}{Mg3Al2}(Al3Si5O22)F2
9.DE.15Potassic-chloro-sadanagaite{K}{Ca2}{Mg3Al2}(Al3Si5O22)Cl2
9.DE.15Potassic-ferro-chloro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)Cl2
9.DE.15Oxo-magnesio-hastingsiteNaCa2(Mg3(Fe3+2-x,Tix))5(Si6Al2O22)O2Mon. 2/m : B2/m
9.DE.15Unnamed (F-dominant analogue of Ferri-kaersutite)(Na,K)Ca2[Mg3(Fe3+,Fe2+)Ti](Si6Al2O22)(F,O)2Mon. 2/m : B2/m
9.DE.15Vanadio-pargasiteNaCa2(Mg3+4V)(Al2Si6)O22(OH)2Mon. 2/m : B2/m
9.DE.15Mangani-pargasiteNaCa2(Mg4Mn3+)(Si6Al2)O22(OH)2Mon. 2/m : B2/m
9.DE.20Potassic-ferro-ferri-katophorite{K}{CaNa}{Fe2+4Fe3+}[(AlSi7)O22](OH)2
9.DE.20Ferro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Barroisite◻{CaNa}{Mg3Al2}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-ferri-barroisite◻(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-winchite◻[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
9.DE.20Ferri-barroisite◻(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2
9.DE.20Ferro-ferri-katophoriteNa(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-barroisite◻{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-richterite{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-winchite ◻{CaNa}{Fe2+4Al}(Si8O22)(OH)2Mon.
9.DE.20Ferro-katophorite{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
9.DE.20Ferri-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferri-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Magnesiotaramite{Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2Mon.
9.DE.20RichteriteNa(NaCa)Mg5(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.20Winchite◻{CaNa}{Mg4Al}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.20TaramiteNa(CaNa)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon. 2/m : B2/m
9.DE.20Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
9.DE.20Potassic-fluoro-richterite{K}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon. 2/m : B2/m
9.DE.20Potassic-richterite{K}{CaNa}{Mg5}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Potassic-fluoro-katophoriteK(CaNa)(Mg4Al)(AlSi7O22)F2
9.DE.20Ferro-fluoro-katophoriteNa(CaNa)(Fe2+4Al)(AlSi7O22)F2
9.DE.20Ferro-ferri-fluoro-katophoriteNa(CaNa)(Fe2+4Fe3+)(AlSi7O22)F2Mon.
9.DE.20Ferri-ghoseite◻[Mn2+Na][Mg4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferri-winchite◻(NaCa)(Mg4Fe3+)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.20Ferro-fluoro-richterite{Na}{CaNa}{Fe2+5}(Si8O22)F2
9.DE.20Fluoro-katophoriteNa(CaNa)(Mg4Al)(AlSi7O22)F2Mon.
9.DE.20Potassic-ferri-katophoriteK(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2
9.DE.20Potassic-ferro-richterite{K}{CaNa}{Fe2+5}Si8O22(OH)2
9.DE.20Ferri-fluoro-katophoriteNa(CaNa)(Mg4Fe3+)(AlSi7O22)F2Mon. 2/m : B2/m
9.DE.20Potassic-ferro-taramiteK{CaNa}{Fe2+3Al2}{Si6Al2}O22(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-winchite◻{CaNa}{Mg4Al}(Si8O22)F2
9.DE.20Ferro-fluoro-winchite◻{CaNa}{Fe2+4Al}(Si8O22)F2
9.DE.20Ferri-fluoro-barroisite◻{CaNa}{Mg3Fe3+2}(AlSi7O22)F2
9.DE.20Ferro-fluoro-barroisite◻{CaNa}{Fe2+3Al2}(AlSi7O22)F2
9.DE.20Ferro-ferri-fluoro-barroisite◻{CaNa}{Fe2+3Fe3+2}(AlSi7O22)F2
9.DE.20Fluoro-barroisite◻{CaNa}{Mg3Al2}(AlSi7O22)F2
9.DE.20Ferri-fluoro-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)F2
9.DE.20Ferro-ferri-fluoro-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)F2
9.DE.20Ferro-fluoro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)F2
9.DE.20Potassic-ferri-taramiteK(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)
9.DE.20Ghoseite◻[Mn2+Na][Mg4Al]Si8O22(OH)2
9.DE.20Potassic-ferro-ferri-taramiteK(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Clinoferroholmquistite◻Li2[Fe2+3Al2]Si8O22(OH,F)2
9.DE.20Hjalmarite{Na}(NaMn}{Mg5}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25EckermanniteNaNa2(Mg4Al}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-eckermanniteNaNa2(Fe2+4Al)Si8O22(OH)2Mon.
9.DE.25Ferro-glaucophane◻[Na2][Fe2+3Al2]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Potassic-mangani-leakeite[(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangano-ferri-eckermannite{Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferri-leakeite[Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Magnesio-riebeckite◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25NybĂžiteNaNa2(Mg3Al2)(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Riebeckite◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangano-mangani-ungarettiiteNaNa2(Mn2+2Mn3+3)(Si8O22)O2Mon. 2/m : B2/m
9.DE.25Ferro-ferri-nybĂžiteNaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Clino-ferro-ferri-holmquistite◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferri-nybĂžiteNaNa2(Mg3Fe3+2](AlSi7O22)(OH)2Mon.
9.DE.25Ferro-ferri-leakeite[Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Ferro-ferri-fluoro-leakeiteNa(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2Mon. 2/m : B2/m
9.DE.25Sodic-ferri-clinoferroholmquistiteNa0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2Mon. 2/m : B2/m
9.DE.25Ferri-pedrizite[Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Potassic-ferri-leakeite[K][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Fluoro-nybĂžiteNaNa2(Mg3Al2)(AlSi7O22)(F,OH)2Mon. 2/m : B2/m
9.DE.25Mangano-ferri-fluoro-leakeiteNaNa2(Mn2+2Fe3+2Li)[Si8O22]F2Mon.
9.DE.25Clino-fluoro-holmquistite◻{Li2}{Mg3Al2}(Si8O22)F2
9.DE.25Mangani-dellaventuraiteNaNa2(MgMn3+2Ti4+Li)Si8O22O2Mon. 2/m : B2/m
9.DE.25Fluoro-pedriziteNaLi2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Potassic-arfvedsonite[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangani-obertiiteNaNa2(Mg3Mn3+Ti4+)Si8O22O2Mon. 2/m : B2/m
9.DE.25Ferro-nybĂžiteNaNa2(Fe2+3Al2)(AlSi7)O22(OH)2Mon.
9.DE.25Clino-sodic-fluoro-holmquistite{Na}{Li2}{Mg4Al}(Si8O22)F2
9.DE.25Potassic-magnesio-fluoro-arfvedsonite[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]Mon. 2/m : B2/m
9.DE.25Ferro-ferri-pedrizite[Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-fluoro-glaucophane◻[Na2][Fe2+3Al2]Si8O22F2
9.DE.25PedriziteNaLi2(LiMg2Al2)(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-pedriziteNaLi2(Fe2+2Al2Li)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-fluoro-pedriziteNa(Li2)(Fe2+2Al2Li)[Si8O22]F2Mon. 2/m : B2/m
9.DE.25Fluoro-leakeiteNaNa2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Ferro-ferri-obertiiteNaNa2(Fe2+3Fe3+Ti)Si8O22O2Mon. 2/m : B2/m
9.DE.25Fluoro-glaucophane◻[Na2][Mg3Al2]Si8O22F2
9.DE.25Fluoro-riebeckite◻{Na2}{Fe2+3Fe3+2}(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Magnesio-fluoro-riebeckite◻{Na2}{Mg3Fe3+2}(Si8O22)F2
9.DE.25Fluoro-eckermanniteNaNa2(Mg4Al}Si8O22F2
9.DE.25Ferro-fluoro-eckermanniteNaNa2(Fe2+4Al}Si8O22F2
9.DE.25Fluoro-arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22F2
9.DE.25Ferri-fluoro-nybĂžiteNaNa2(Mg3Fe3+2)(AlSi7O22)F2
9.DE.25Ferro-ferri-fluoro-nybĂžiteNaNa2(Fe2+3Fe3+2)(AlSi7O22)F2
9.DE.25Ferro-fluoro-nybĂžiteNaNa2(Fe2+3Al2)(AlSi7O22)F2
9.DE.25Ferro-leakeiteNaNa2(Fe2+2Al2Li)(Si8O22)(OH)2
9.DE.25LeakeiteNaNa2(Mg2Al2Li)(Si8O22)(OH)2
9.DE.25Potassic-leakeiteKNa2(Mg2Al2Li)(Si8O22)(OH)2
9.DE.25Ferri-fluoro-pedriziteNaLi2(LiMg2Fe3+2)(Si8O22)F2
9.DE.25Ferro-ferri-fluoro-pedriziteNaLi2(LiFe2+2Fe3+2)(Si8O22)F2
9.DE.25Clino-ferro-ferri-fluoro-holmquistite◻{Li2}{Fe2+3Fe3+2}(Si8O22)F2
9.DE.25Clino-ferri-fluoro-holmquistite◻{Li2}{Mg3Fe3+2}(Si8O22)F2
9.DE.25Clino-ferro-fluoro-holmquistite◻{Li2}{Fe2+3Al2}(Si8O22)F2
9.DE.25Ferri-obertiiteNaNa2(Mg3Fe3+Ti)Si8O22O2 Mon. 2/m : B2/m
9.DE.25Oxo-mangani-leakeiteNaNa2(Mn3+4Li)Si8O22O2Mon. 2/m : B2/m
9.DE.25Oxo-pargasiteNaCa2(Mg3(Al2-x,Tix))5(Si6Al2O22)O2
9.DE.25Unnamed (Possible K-analogue of Ferri-obertiite)KNa2((Mg,Fe,Na)3Fe3+(Ti,Fe))Si8O22(O,F)2
9.DE.25Potassic-mangano-mangani-ungarettiiteKNa2(Mn2+2Mn3+3)Si8O22O2
9.DE.25Potassic-jeanlouisiteK(NaCa)(Mg4Ti)Si8O22O2Mon. 2/m : B2/m

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.

Internet Links for TschermakiteHide

References for TschermakiteHide

Localities for TschermakiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • New South Wales
    • Murchison Co.
      • Upper Bingara
Sutherland et al. (2003)
  • Western Australia
    • Coolgardie Shire
      • Coolgardie
Geological Society of Australia WA Div.
    • Upper Gascoyne Shire
      • Glenburgh Station
Roche (2016)
Bangladesh
 
  • Chittagong Division
Rahman et al. (2022)
Brazil
 
  • EspĂ­rito Santo
    • Cachoeiro de Itapemirim
      • Itaoca district
Mesquita et al. (2017)
  • GoiĂĄs
    • CrixĂĄs gold field
      • CrixĂĄs
        • Mina III
Campos et al. (2022)
  • Minas Gerais
Jour. of South American Earth Sci. ...
  • ParaĂ­ba
    • Catingueira
      • Itajubatiba
Souza Neto et al. (2008)
  • Rio Grande do Sul
    • Vila Nova do Sul
Massuda et al. (2020)
Canada
 
  • Manitoba
    • Lynn Lake District
Samson I M et al. (1999)
  • Newfoundland and Labrador
    • Newfoundland
Pe-Piper et al. (2024)
  • Ontario
    • Algoma District
www.venuewest.com/8IKC/s1post.htm.
    • Kenora District
      • Balmer Township
Charles A. Tarnocai et al. (1997) +1 other reference
China
 
  • Anhui
    • Anqing
      • Taihu County
        • Lake Hualiangting
Franz et al. (2001)
      • Yuexi County
        • Wumiao
          • Marble quarry
C. Lemanski (re-entry of lost Mindat data)
  • Gansu
    • Jinchang
      • Jinchuan District
Porter (2016)
  • Guangdong
    • Yangjiang
      • Yangchun Co.
Zheng et al. (2015)
  • Henan
    • Pingdingshan
      • Lushan County
Dongyang Zhang et al. (2010)
  • Inner Mongolia
    • Baotou City (Baotou Prefecture)
      • Bayan Obo mining district
        • Bayan Obo
Li et al. (2022)
  • Shanxi
    • Xinzhou
      • Dai Co.
Bai et al. (2018)
  • Xinjiang
    • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
      • Yizhou District
        • Huangshan-Jing'erquan ore belt
Weidong Hui et al. (2011)
  • Yunnan
    • DĂȘqĂȘn Autonomous Prefecture
      • Shangri-La County
Wang et al. (2022)
Czech Republic
 
  • Olomouc Region
    • Ć umperk District
      • LoučnĂĄ nad Desnou
MĂŒcke et al. (2002)
      • Verníƙovice
MĂŒcke et al. (2002)
MĂŒcke et al. (2002)
MĂŒcke et al. (2002)
MĂŒcke et al. (2002)
ZimĂĄk et al. (2018)
  • Plzeƈ Region
    • Klatovy District
CĂ­lek et al. (zĂĄpadočeskĂ© svrchnĂ­ proterozoikum)
Finland
 
  • Lapland
    • Enontekiö
SipilÀ
  • North Savo
    • LeppĂ€virta
Papunen
  • Southwest Finland
    • Pargas
Laitakari (1916)
France
 
  • Bourgogne-Franche-ComtĂ©
    • Haute-SaĂŽne
      • Lure
        • MĂ©lisey
          • ChĂąteau-Lambert
            • Saint-Maurice-sur-Moselle
F. André and J. Béhien
  • New Caledonia
    • Northern Province
      • Poya North
        • NĂ©poui
T. Sameshima et al.
  • Occitanie
    • Aveyron
      • Millau
        • Saint-BeauzĂ©ly
Bull. Soc. Franç. Minéralo. ...
        • Viala-du-Tarn
Arliguie M collection
Germany
 
  • Hesse
    • Darmstadt
      • Bergstraße
        • Bensheim
          • Auerbach
Weiß (1990)
Greece
 
  • Eastern Macedonia and Thrace
    • Xanthi
      • Myki
        • Thermes
Eur. J. Mineral.
Greenland
 
  • Sermersooq
    • Nuuk
Petersen et al. (1993)
Hungary
 
  • Baranya County
    • KomlĂł District
      • KomlĂł
Harangi
  • FejĂ©r County
    • GĂĄrdony District
SzakĂĄll-Gatter-Szendrei
  • Heves County
    • Eger District
      • SzarvaskƑ
Mineral Species of Hungary
    • PĂ©tervĂĄsĂĄra District
      • MĂĄtraderecske
SzakĂĄll-Gatter-Szendrei
India
 
  • Karnataka
    • Kolar District
      • Kolar Gold Fields
Narayanan Kutty et al. (1977)
  • Odisha
    • Sundargarh District (Sundergarh District)
Chowdhury (2007) +1 other reference
  • Rajasthan
    • Jaipur district
      • Sikar District
Rout et al. (2022)
Indonesia
 
Knuever et al. (2023)
Iran
 
  • East Azerbaijan Province
    • Varzaqan county
Kamali et al. (2018) +1 other reference
Italy
 
  • Campania
    • Naples
      • Somma-Vesuvius Complex
        • Mount Somma
          • Ercolano
            • San Vito
Russo et al. (2004)
  • Lazio
    • Metropolitan City of Rome Capital
Knuever et al. (2023)
  • Sardinia
    • Sassari Province
      • Golfo Aranci
Gamboni et al. (2006)
Madagascar
 
  • Atsimo-Andrefana
    • Ampanihy District
      • Fotadrevo
        • Anavoha South
Frank K. Mazdab collection
    • Benenitra District
      • Ianapera
Andrianjakavah et al. +1 other reference
Mexico
 
  • Chihuahua
    • Pueblito de Allende
American Mineralogist
New Zealand
 
  • Southland Region
    • Invercargill City
Mossman et al. (2000)
Mossman et al. (2000)
Norway
 
  • Agder
    • Froland
      • Lyngrott
Brickwood (1986)
  • Nordland
    • Vefsn
      • Husvika
Birkeland et al. (1993)
  • Vestland
    • Stad
      • Selje
        • Årsheim
Smith (1988)
Oman
 
  • Dhofar Governorate
The Meteoritical Bulletin et al. (2004)
Pakistan
 
  • Gilgit-Baltistan
    • Roundu District
      • Haramosh Mts.
Rolfo et al. (1997)
imported from Rondu District +1 other reference
  • Khyber Pakhtunkhwa Province
    • Mohmand District
DH&Z +1 other reference
Philippines
 
  • Luzon
    • Cordillera Administrative Region
      • Benguet Province
Cao et al. (2018)
Poland
 
  • Lower Silesian Voivodeship
    • Kamienna GĂłra County
      • Gmina MarciszĂłw
        • Wieƛciszowice
Oberc-Dziedzic et al. (2011)
Romania
 
  • Bistrița-Năsăud County
    • Rodna
      • Valea Vinului
Delia Cristina Papp et al. (2005)
Russia
 
  • Buryatia
    • Okinsky District
Kiseleva et al. (2022)
  • Chelyabinsk Oblast
    • Miass
Sorokina et al. (2019)
  • Irkutsk Oblast
    • Uda–Biryusa district
Barkov et al. (2019)
  • Kamchatka Krai
    • Ust-Bolsheretsky District
      • Dukuk complex
Novakov et al. (2021)
Tararin et al. (2007)
Tararin et al. (2007)
  • Republic of Karelia
    • Loukhsky District
Nikolay Serebryakov data
      • Oulanka plutonic complex
        • Olanga River (Oulanka River)
A. Yu. Barkov et al.
      • Tedino
        • Dyadino lake
Pavel.M. Kartashov (n.d.)
  • Sakha
    • Verkhoyansk District
      • Yana River Basin
        • Yana-Adycha Region
Trunilina et al. (2024)
Slovakia
 
  • BanskĂĄ Bystrica Region
    • Lučenec District
      • Čamovce
[[1]]Reato
  • Bratislava Region
    • Bratislava
      • Bratislava I
        • StarĂ© Mesto
OzdĂ­n D.
  • KoĆĄice Region
    • RoĆŸĆˆava District
SpiĆĄĂĄk
  • PreĆĄov Region
    • PreĆĄov District
      • Fintice
Ďuďa
South Korea
 
  • Gyeonggi Province
    • Pocheon City
Lee et al. (2022)
Spain
 
  • Castile-La Mancha
    • Guadalajara
      • Atienza
        • Alpedroches
Majarena Serrano (2015)
  • Galicia
    • Pontevedra
      • A Cañiza
Martin-Izard et al. (1995)
Switzerland
 
  • Grisons
    • Maloja Region
      • Bregaglia
        • Upper Val Bregaglia
          • Löbbia
Stalder et al. (1998)
  • Ticino
    • Blenio
      • Blenio Valley
        • Santa Maria Valley
          • Acquacalda
Stalder et al. (1998)
Tanzania
 
  • Arusha Region
    • Longido District
Cedric Simonet (2000)
UK
 
Tindle (2008)
    • Highland
      • Fort William and Ardnamurchan
        • Ballachulish
Ferry (1996)
    • South Ayrshire
Smellie et al. (1984)
www.minsocam.org
  • Wales
    • Conwy
      • Caerhun
Bevins et al. (1993)
USA
 
  • Alaska
    • Kenai Peninsula Borough
      • Kachemak Bay
        • Seldovia
Geological Society of America Bulletin
  • Arizona
    • Santa Cruz County
      • Tyndall Mining District
Anthony et al. (1995)
  • California
    • Siskiyou County
      • Little Mount Hoffman
Mertzman (1978) +1 other reference
  • Georgia
    • Rabun County
American Mineralogist
  • Kentucky
    • Calloway County
American Mineralogist
  • North Carolina
Stapor
Stapor
    • Clay County
Lang
    • Davie County
McSween et al. (1984)
    • Haywood County
Anderson et al. (2009)
    • Jackson County
Nathan Clay Collins (2011)
    • Macon County
Nathan Clay Collins (2011)
      • Cowee Valley
        • Ellijay Mining District
          • Franklin
EL-Shazley et al. (2011)
Collins (2011)
    • Mecklenburg County
McSween Jr et al. (1984)
    • Mitchell County
      • Bakersville
Page et al. (2004)
Page et al. (2004)
    • Rowan County
McSween et al. (1984)
Stapor
  • Texas
    • Llano County
in the collection of Jennifer Cindrich
Vietnam
 
  • YĂȘn BĂĄi Province
Xu et al. (2024)
Zimbabwe
 
  • Midlands
    • Shurugwi District
Chaumba (2017)
The Moon
 
 
Mineral and/or Locality  
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