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Tschermakite

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Formula:
☐(Ca
 
2
)(Mg
 
3
Al
 
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
System:MonoclinicColour:Medium green to dark ...
Lustre:VitreousHardness:5 - 6
Member of:Tschermakite Group > Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Name:
Named after Gustav Tschermak von Sessenegg (1836-1927), Austrian mineralogist.


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 2apfu Ca, older literature may describe amphiboles with A(Na+K)>0,5 as tschermakites. These are now considered pargasites

Classification of Tschermakite

IMA status:Redefined Approved 2012
Strunz 8th edition ID:8/F.10-60
Nickel-Strunz 10th (pending) edition ID:9.DE.10

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles
Hey's CIM Ref.:16.11.4

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

Geological Setting:Eclogites and other ultramafic rocks, amphibolites or other medium to high grade metamorphic rocks.

Physical Properties of Tschermakite

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

Crystallography of Tschermakite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
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 Volume: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}

Optical Data of Tschermakite

Type:Biaxial (-)
RI values: nα = 1.623 - 1.660 nβ = 1.630 - 1.680 nγ = 1.638 - 1.688
2V:Measured: 60° to 90°
Maximum Birefringence:δ = 0.015 - 0.028

Chart 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

Chemical Properties of Tschermakite

Formula:
☐(Ca
 
2
)(Mg
 
3
Al
 
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Simplified for copy/paste:☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2
Essential elements:Al, Ca, H, Mg, O, Si
All elements listed in formula:Al, Ca, H, Mg, O, Si
Common Impurities:Ti,Mn,Na,K,H2O,Fe

Relationship of Tschermakite to other Species

Series:Forms a series with Ferro-tschermakite (see here)
Member of:Tschermakite Group > Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Other Members of Group:

- +
Ferri-fluoro-tschermakite
☐{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Al
 
2
Si
 
6
O
 
22
)F
 
2
Ferri-tschermakite
☐{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Ferro-ferri-fluoro-tschermakite
☐{Ca
 
2
}{Fe
2+
3
Fe
3+
2
}(Al
 
2
Si
 
6
O
 
22
)F
 
2
Ferro-Ferri-tschermakite
☐{Ca
 
2
}{Fe
2+
3
Fe
3+
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Ferro-fluoro-tschermakite
☐{Ca
 
2
}{Fe
2+
3
Al
2
}
(Al
 
2
Si
 
6
O
 
22
)F
 
2
Ferro-tschermakite
☐{Ca
 
2
}{Fe
2+
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Fluoro-tschermakite
☐{Ca
 
2
}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)F
 
2
Common Associates:
KyaniteGarnet Structural Group
Related Minerals - Nickel-Strunz Grouping):

- +
9.DE.05Anthophyllite
☐{Mg
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.05Cummingtonite
☐{Mg
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.05Clino-holmquistite Group
☐{Li
 
2
}{Z
2+
3
Z
3+
2
}(Si
 
8
O
 
22
)(OH,F,Cl)
 
2
9.DE.05Grunerite
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.05Manganocummingtonite
☐{Mn
2+
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.05Manganogrunerite
☐{Mn
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.05Permanganogrunerite
☐{Mn
2+
2
}{Mn
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.05Ferro-fluoro-pedrizite
{Na}{Li
 
2
}{Fe
 
2
Al
 
2
Li}(Al
 
2
Si
 
6
O
 
22
)F
 
2
9.DE.05Ferri-fluoro-leakeite
{Na}{Na
 
2
}{Mg
 
2
Fe
3+
2
Li}(Si
 
8
O
 
22
)F
 
2
9.DE.10Actinolite
☐{Ca
 
2
}{(Mg,Fe
2+
 
)
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.10Ferri-tschermakite
☐{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.10Ferro-actinolite
☐{Ca
 
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.10Ferro-hornblende
☐{Ca
 
2
}{Fe
2+
4
Al}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.10Ferro-tschermakite
☐{Ca
 
2
}{Fe
2+
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.10Joesmithite
{Pb}{Ca
 
2
}{Mg
 
3
Fe
3+
2
}(Be
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.10Magnesio-hornblende
☐{Ca
 
2
}{Mg
 
4
Al}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.10Tremolite
☐{Ca
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.10Cannilloite
Ca(Ca
 
2
)(Mg
 
4
Al)(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DE.10Fluor-cannilloite
{Ca}{Ca
 
2
}{Mg
 
4
Al}(Al
 
3
Si
 
5
O
 
22
)(F,OH)
 
2
9.DE.10Parvo-manganotremolite
☐{CaMn
2+
 
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.10Fluoro-tremolite
☐{Ca
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)F
 
2
9.DE.10Potassic-fluoro-pargasite
{K}{Ca
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)F
 
2
9.DE.15Edenite
{Na}{Ca
 
2
}{Mg
 
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.15Ferro-edenite
{Na}{Ca
 
2
}{Fe
2+
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.15Ferro-kaersutite
{Na}{Ca
 
2
}{Fe
2+
3
AlTi}(Al
 
2
Si
 
6
O
 
22
)O
 
2
9.DE.15Ferro-pargasite
{Na}{Ca
 
2
}{Fe
2+
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Hastingsite
{Na}{Ca
 
2
}{Fe
2+
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Kaersutite
{Na}{Ca
 
2
}{Mg
 
3
AlTi}(Al
 
2
Si
 
6
O
 
22
)O
 
2
9.DE.15Magnesio-hastingsite
{Na}{Ca
 
2
}{Mg
 
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Pargasite
{Na}{Ca
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Sadanagaite
{Na}{Ca
 
2
}{Mg
 
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DE.15Fluoro-edenite
{Na}{Ca
 
2
}{Mg
 
5
}(AlSi
 
7
O
 
22
)(F,OH)
 
2
9.DE.15Potassic-ferro-ferri-sadanagaite
{K}{Ca
 
2
}{Fe
2+
3
Fe
3+
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DE.15Potassic-sadanagaite
{K}{Ca
 
2
}{Mg
 
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DE.15Potassic-pargasite
{K}{Ca
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Potassic-ferro-sadanagaite
{K}{Ca
 
2
}{Fe
2+
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DE.15Magnesio-fluoro-hastingsite
{Na}{Ca
 
2
}{Mg
 
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)F
 
2
9.DE.15Potassic- fluoro-hastingsite
{K}{Ca
 
2
}{Fe
2+
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(F,OH)
 
2
9.DE.15Potassic-chloro-hastingsite
{K}{Ca
 
2
}{Fe
2+
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(Cl,OH)
 
2
9.DE.15Fluoro-pargasite
{Na}{Ca
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)(F,OH)
 
2
9.DE.15Parvo-mangano-edenite
{Na}{CaMn
2+
 
}{Mg
 
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.15Potassic-chloro-pargasite
{K}{Ca
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)(Cl,OH)
 
2
9.DE.15Potassic-ferro-chloro-edenite
{K}{Ca
 
2
}{Fe
2+
5
}(AlSi
 
7
O
 
22
)(Cl,OH)
 
2
9.DE.15Potassic-magnesio-hastingsite
{K}{Ca
 
2
}{Mg
 
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Potassic-ferro-pargasite
{K}{Ca
 
2
}{Fe
2+
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.15Chromio-pargasite
{Na}{Ca
 
2
}{Mg
 
4
Cr
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.20Ferro-taramite
Na(CaNa)(Fe
2+
3
Al
 
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.20Barroisite
☐{CaNa}{Mg
 
3
Al
 
2
}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.20Ferro-ferri-barroisite
☐(CaNa)(Fe
2+
3
Fe
3+
2
)(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.20Ferro-ferri-winchite
☐[CaNa][Fe
2+
4
(Fe
3+
 
,Al)]Si
 
8
O
 
22
(OH)
 
2
9.DE.20Ferri-barroisite
☐(CaNa)(Mg
 
3
Fe
3+
2
)(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.20Ferro-ferri-taramite
Na(CaNa)(Fe
2+
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.20Ferro-ferri-katophorite
NaCaNaFe
2+
4
(Fe
3+
 
)[(AlSi
 
7
)O
 
22
](OH)
 
2
9.DE.20Ferro-barroisite
☐{CaNa}{Fe
2+
3
Al
 
2
}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.20Ferro-richterite
{Na}{CaNa}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.20Ferro-winchite
☐{CaNa}{Fe
2+
4
Al}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.20Ferro-katophorite
{Na}{CaNa}{Fe
2+
4
Al}[(AlSi
 
7
)O
 
22
](OH)
 
2
9.DE.20Ferri-taramite
Na(CaNa)(Mg
 
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.20Magnesiotaramite
{Na}{CaNa}{Mg
 
3
AlFe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.20Richterite
{Na}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.20Winchite
☐{CaNa}{Mg
 
4
Al}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.20Taramite
{Na}{CaNa}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DE.20Fluoro-richterite
{Na}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(F,OH)
 
2
9.DE.20Katophorite
{Na}{CaNa}{Mg
 
4
Al}[(AlSi
 
7
)O
 
22
](OH)
 
2
9.DE.20Potassic-fluoro-richterite
{K}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(F,OH)
 
2
9.DE.20Potassic-richterite
K[CaNa][Mg
 
5
]Si
 
8
O
 
22
(OH)
 
2
9.DE.20Ferri-ghoseite
☐[Mn
2+
 
Na][Mg
 
4
Fe
3+
 
]Si
 
8
O
 
22
(OH)
 
2
9.DE.20Ferri-winchite
☐[CaNa][Mg
 
4
(Fe
3+
 
,Al)]Si
 
8
O
 
22
(OH)
 
2
9.DE.20Fluoro-taramite
{Na}{CaNa}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)F
 
2
9.DE.25Arfvedsonite
[Na][Na
 
2
][Fe
2+
4
Fe
3+
 
]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Eckermannite
NaNa
 
2
(Mg
 
4
Al}Si
 
8
O
 
22
(OH)
 
2
9.DE.25Ferro-eckermannite
NaNa
 
2
(Fe
2+
 
,
 
4
Al)Si
 
8
O
 
22
(OH)
 
2
9.DE.25Ferro-glaucophane
◻[Na
 
2
][Fe
2+
3
Al
 
2
]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Glaucophane
◻[Na
 
2
][Mg
 
3
Al
 
2
]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Potassic-mangani-leakeite
[(Na,K)][Na
 
2
][Mg
 
2
Mn
3+
2
Li]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Mangano-arfvedsonite
[Na][Na
 
2
][Mn
2+
4
(Fe
3+
 
)]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Ferri-leakeite
[Na][Na
 
2
][Mg
 
2
Fe
3+
2
Li]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Magnesio-riebeckite
◻{Na
 
2
}{Mg
 
3
Fe
3+
2
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.25Magnesio-arfvedsonite
{Na}{Na
 
2
}{Mg
 
4
Fe
3+
 
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.25Nybøite
NaNa
 
2
(Mg
 
3
Al
 
2
)(AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.25Riebeckite
◻[Na
 
2
][Fe
2+
3
Fe
3+
2
]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Mangano-mangani-ungarettiite
NaNa
 
2
(Mn
2+
2
Mn
3+
3
)(Si
 
8
O
 
22
)O
 
2
9.DE.25Ferro-ferri-nybøite
NaNa
 
2
[(Fe
2+
3
,Mg)Fe
3+
2
](AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.25Clino-ferro-ferri-holmquistite
◻{Li
 
2
}{Fe
2+
3
Fe
3+
2
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.25Ferri-nybøite
NaNa
 
2
(Mg
 
3
Fe
3+
2
](AlSi
 
7
O
 
22
)(OH)
 
2
9.DE.25Ferro-ferri-leakeite
[Na][Na
 
2
][Fe
2+
2
Fe
3+
2
Li]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Ferro-ferri-fluoro-leakeite
Na(Na
 
2
)(Fe
2+
2
Fe
3+
2
Li)(Si
 
8
O
 
22
)(F)
 
2
9.DE.25Sodic-ferri-clinoferroholmquistite
☐{Li
 
2
}{Fe
2+
3
Fe
3+
2
}(Si
 
8
O
 
22
)(OH)
 
2
9.DE.25Magnesio-fluoro-arfvedsonite
[Na][Na
 
2
][Mg
 
4
Fe
3+
 
][Si
 
8
O
 
22
](F,OH)
 
2
9.DE.25Ferri-pedrizite
[Na][Li
 
2
][Mg
 
2
Fe
3+
2
Li]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Potassic-ferri-leakeite
[K][Na
 
2
][Mg
 
2
Fe
3+
2
Li]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Fluoro-nybøite
NaNa
 
2
(Mg
 
3
Al
 
2
)(AlSi
 
7
O
 
22
)(F,OH)
 
2
9.DE.25Mangani-dellaventuraite
{Na}{Na
 
2
}{MgMn
3+
2
LiTi
4+
 
}Si
 
8
O
 
22
O
 
2
9.DE.25Fluoro-pedrizite
NaLi
 
2
(Mg
 
2
Al
 
2
Li)(Si
 
8
O
 
22
)F
 
2
9.DE.25Potassic-arfvedsonite
[(K,Na)][Na
 
2
][Fe
2+
4
Fe
3+
 
]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Ferri-obertiite
Na(Na
 
2
)(Mg
 
3
Fe
3+
 
Ti)(Si
 
8
O
 
22
)O
 
2
9.DE.25Potassic-magnesio-fluoro-arfvedsonite
[(K,Na)][Na
 
2
][Mg
 
4
Fe
3+
 
][Si
 
8
O
 
22
][(F,OH)
 
2
]
9.DE.25Ferro-ferri-pedrizite
[Na][Li
 
2
][Fe
2+
2
Fe
3+
2
Li]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Potassic-magnesio-arfvedsonite
[K][Na
 
2
][Mg
 
4
Fe
3+
 
]Si
 
8
O
 
22
(OH)
 
2
9.DE.25Pedrizite
NaLi
 
2
(LiMg
 
2
Al
 
2
)(Si
 
8
O
 
22
)(OH)
 
2
9.DE.25Ferro-pedrizite
NaLi
 
2
(LiFe
2+
2
Al
 
2
)Si
 
8
O
 
22
(OH)
 
2
9.DE.25Fluoro-leakeite
NaNa
 
2
(Mg
 
2
Al
 
2
Li)(Si
 
8
O
 
22
)F
 
2
9.DE.25Ferro-ferri-obertiite
NaNa
 
2
(Fe
2+
3
Fe
3+
 
Ti)Si
 
8
O
 
22
O
 
2
Related Minerals - Hey's Index Grouping:

- +
16.11.1Madisonite
Ca
 
2
Mg
 
2
Al
 
2
Si
 
3
O
 
13
or near
16.11.3Alumino-magnesio-hornblende
☐{Ca
 
2
}{Mg
 
4
Al}(AlSi
 
7
O
 
22
)(OH)
 
2
16.11.5Clintonite
Ca(Mg,Al)
 
3
(Al
 
3
SiO
 
10
)(OH)
 
2
16.11.6Juanite
Ca
 
10
Mg
 
4
Al
 
2
Si
 
11
O
 
39
· 4H
 
2
O or near
16.11.7Pumpellyite-(Mg)
Ca
 
2
MgAl
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
· H
 
2
O
16.11.8Tacharanite
Ca
 
12
Al
 
2
Si
 
18
O
 
51
· 18H
 
2
O
16.11.9Aluminobarroisite
☐{CaNa}{Mg
 
3
Al
 
2
}(AlSi
 
7
O
 
22
)(OH)
 
2
16.11.10Taramite
{Na}{CaNa}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.11.12Edenite
{Na}{Ca
 
2
}{Mg
 
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
16.11.13Pargasite
{Na}{Ca
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.11.14Katophorite
{Na}{CaNa}{Mg
 
4
Al}[(AlSi
 
7
)O
 
22
](OH)
 
2
16.11.15Beidellite
(Na,Ca
 
0.5
)
 
0.3
Al
 
2
((Si,Al)
 
4
O
 
10
)(OH)
 
2
· nH
 
2
O
16.11.15Magnesiosadanagaite
{Na}{Ca
 
2
}{Mg
 
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
16.11.16Sadanagaite
{Na}{Ca
 
2
}{Mg
 
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2

Other Names for Tschermakite

Synonyms:
AluminotschermakiteTschermakitic hornblende
Other Languages:
German:Tschermakit
Simplified Chinese:钙镁闪石
纯镁闪石
镁钙闪石
Spanish:Tschermakita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Tschermakite

Reference List:

- +
A. N. Winchell (1945) Variations in composition and properties of calciferous amphiboles. American Mineralogist 30:27-50

American Journal of Science (1945): 243: 29.

Phillips, M.W., Draheim, J.E., Popp, R.K., Clowe, C.A., and Pinkerton, A.A. (1989) Effects of oxidation-dehydrogenation in tschermakitic hornblende. American Mineralogist: 74: 764-773.

Mineralogical Record (1998): 29: 169-174.

Hawthorne, Frank C., and Roberta Oberti (2006), On the classification of amphiboles: Canadian Mineralogist: 44(1): 1-21.

Ishida, K. and Hawthorne, F.C. (2006) Assignment of infrared OH-stretching bands in calcic amphiboles through deuteration and heat treatment. American Mineralogist: 91: 871-879.

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

Internet Links for Tschermakite

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  • Localities for Tschermakite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Brazil
     
    • Minas Gerais
    Jour. of South American Earth Sci. 15:709–723
    • Paraíba
      • Borborema mineral province
        • Catingueira
    Souza Neto, J.A., Legrand, J.M., Volfinger, M., Pascal, M.-L., and Sonnet, P. (2008): Mineralium Deposita 43, 185-205.
    Canada
     
    • Manitoba
      • Lynn Lake District
    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
    • Ontario
      • Algoma District
    www.venuewest.com/8IKC/s1post.htm.
      • Kenora District
        • Balmer Township
    Charles A. Tarnocai, Keiko Hattori, and Louis J. Cabri (1997) "Invisible" gold in sulfides from Campbell Mine, Red lake greenstone belt, Ontario; evidence for mineralization during the peak of metamorphism. Can Mineral 35:805-815
    China
     
    • Anhui Province
      • Anqing Prefecture
        • Taihu Co.
          • Lake Hualiangting
    Franz, L., Romer, R.L., Klemd, R., Schmid, R., Oberhänsli, R., Wagner, T., and Dong Shuwen (2001): Contributions to Mineralogy and Petrology 141, 322-346.
        • Yuexi Co.
          • Wumiao
            • Marble quarry
    C. Lemanski, Jr. (re-entry of lost Mindat data).
    • Henan Province
      • Pingdingshan Prefecture
        • Lushan Co.
    Dongyang Zhang, Huimin Su, Lei Tian, Jianli Kang, and Yang Gao (2010): Journal of Mineralogy and Petrology 31(1), 53-63
    • Xinjiang Autonomous Region
      • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
        • Hami Co. (Kumul Co.; Qumul Co.)
          • Huangshan-Jing'erquan ore belt
    Weidong Hui, Pengda Zhao, Kezhang Qin, Jinzhu San, Qinghua Xiao, and Jian Wu (2011): Geology and Exploration 47(3), 388-399
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Plzeň Region
        • Klatovy (Klattau)
    Cílek, V., Černý, P., Palivcová, M.: Tremolitické horniny z okolí Tětic u Klatov (západočeské svrchní proterozoikum). Časopis pro mineralogii a geologii, 1984, roč. 29, č. 3, s. 235-254.
    Finland
     
    • Eastern Finland Region
      • Leppävirta
    Papunen, H. and Koskinen, J. 1985. Geology of Kotalahti nickel-copper ore. in: Nickel-copper deposits of the Baltic Shield and Scandinavian Caledonides. Geological Survey of Finland, Bulletin 333, 228-240.
    • Lapland Region
      • Enontekiö
    Sipilä, Pekka 1992. The Caledonian Halt-Ridnitsohkka igneous complex in Lapland. Geological Survey of Finland Bulletin 362, 75 p. 23 app. pages
    France
     
    • Franche-Comté
      • Haute-Saône
        • Château-Lambert
          • Saint-Maurice-sur-Moselle
    F. André and J. Béhien, Bull. Minéral. , France, 1983, 106, pp. 341-351.
    • Midi-Pyrénées
      • Aveyron
        • Saint-Beauzély
    Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, pp. 465-469.
        • Viala-du-Tarn
    Arliguie M collection
    Germany
     
    • Hesse
      • Odenwald
        • Bensheim
          • Hochstädten
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Greece
     
    • Thraki Department (Thrace; Thracia)
      • Komotini Prefecture (Rodopi; Rhodope)
        • Thermes
    Eur. J. Mineral. , 1994, 6, pp. 733-738.
    Greenland
     
    • Sermersooq
      • Nuuk (Godthåb)
    Petersen, O. V. & Secher, K. (1993): The Minerals of Greenland. Mineralogical Record 24 (2): 1-67
    Hungary
     
    • Baranya Co.
      • Mecsek Mtns
        • Komló
    Harangi,2001
    • Fejér Co.
      • Velencei Mtns
    Szakáll-Gatter-Szendrei,2005
    • Heves Co.
      • Bükk Mtns
        • Szarvaskő
    Mineral Species of Hungary, 2005
      • Mátra Mtns
        • Mátraderecske
    Szakáll-Gatter-Szendrei,2005
    India
     
    • Karnataka
      • Kolar District
        • Kolar Gold Fields
    Narayanan Kutty, T.R. and Anantha Iyer, G.V. (1977) Indian Journal of Earth Sciences, 4, #2, 141-159.
    • Orissa
      • Sundargarh District (Sundergarh District)
    Chowdhury, S., & Lentz, D. R. (2011). Mineralogical and geochemical characteristics of scheelite-bearing skarns, and genetic relations between skarn mineralization and petrogenesis of the associated granitoid pluton at Sargipali, Sundergarh District, Eastern India. Journal of Geochemical Exploration, 108(1), 39-61.
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
          • Monte Somma
            • Ercolano
              • San Vito
    Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI
    • Sardinia
      • Olbia-Tempio Pausania Province
        • Olbia
    Gamboni, A., Gamboni, T. (2006): Gallura, tesori nel granito, i minerali delle pegmatiti granitiche. Webber Editore, Sassari, 190 pp.
    Mexico
     
    • Chihuahua
      • Pueblito de Allende
    American Mineralogist, Volume 94, pages 1483–1486, 2009
    New Caledonia
     
    • Northern Province
      • Poya North Commune
        • Népoui
    T. Sameshima et al. , Am. Min. , 1983, 68, pp. 1076-1082. / C. Campiglio et al. , Bull. Minéral. , 1986, 109, pp. 423-440.
    New Zealand
     
    • South Island
      • Canterbury
        • Banks Peninsula
    CanMin 38:191-216
    Norway
     
    • Nordland
      • Vefsn
        • Husvika
    Birkeland, A. & Bjørlykke, A. (1993): Pb isotopic constraints on the origin of the Husvika Zn-Pb deposit in Nordland, north-central, Norway. Norsk Geologisk Tidsskrift 73 (1), 43-54
    Oman
     
    • Dhofar Province (Al Janubiyah Province)
    The Meteoritical Bulletin, No. 88, 2004 JULY, Meteoritics & Planetary Science 39, Axxx–Axxx (2004)
    Pakistan
     
    • Federally Administered Tribal Areas (FATA)
      • Mohmand Agency
    http://www.mindat.org/mesg-14-112462.html; DH&Z
    Romania
     
    • Bistrița-Năsăud Co.
      • Rodna Mtn (Rodnei Mtn)
        • Rodna
          • Valea Vinului
    Delia Cristina Papp, Ionel Ureche, Ioan Seghedi, Hilary Downes, Luigi Dallai, (2005), Petrogenesis of convergent-margin calc-alkaline rocks and the significance of the low oxygen isotope ratios: the Rodna-Bârgău Neogene subvolcanic area (Eastern Carpathians), Geologica Carpathica, 56, 1, p.77-90
    Russia
     
    • Northern Region
      • Karelia Republic
        • Northern Karelia
    Nikolay Serebryakov data
          • Loukhi
            • Tedino
              • Dyadino lake
    P.M. Kartashov data
          • Oulanka plutonic complex
            • Olanga River (Oulanka River)
    A. Yu. Barkov et al. , Eur. J. Mineral. , 1996, 8, pp. 311-316.
    Slovakia
     
    • Bratislava Region
      • Bratislava Co.
        • Bratislava
          • Staré Mesto
    Ozdín D., Uher P., Bačík P., 2007: Amfiboly a minerály skupiny epidotu v porfyrickom diorite na lokalite Bratislava-Okánikova ulica. Mineralia Slovaca, 39,4, Geovestník, 4.
    • Košice Region
      • Rožňava Co.
    Spišák,J., Hovorka,D., Rybka,R.,Turan,J., 1989: Spessartín a piemontit v metasedimentochstaršieho paleozoika vnútorných Západných Karpát. Čas. Pro min. a geol., 1, 17 – 29
    • Prešov Region
      • Prešov Co.
    Ďuďa,R., et al., 1981: Mineralógia severnej časti Slanských vrchov. Min.Slovaca, Monografia 2, 98s
    Spain
     
    • Galicia
      • Pontevedra
        • A Cañiza
    Martin-Izard, A., Paniagua, A., Moreiras, D. (1995) Metasomatism at a granitic pegmatite-dunite contact in Galicia: the Franqueira occurrence of chrysoberyl (alexandrite), emerald, and phenakite. Canadian Mineralogist, 33, 775-792.
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Bregaglia Valley (Bergell)
        • Löbbia
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 297.
    • Ticino (Tessin)
      • Blenio Valley
        • Santa Maria Valley
          • Acquacalda
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 263.
    Tanzania
     
    • Arusha Region
    Cedric Simonet (2000): “Geology of Sapphire and Ruby Deposits -The example of the John Saul Ruby Mine, Mangare area, Southern Kenya” PhD Thesis, University of Nantes
    The Moon
    Mokhov A.V., Kartashov P.M., Bogatikov O.A. (2007) Moon under a microscope, - Moscow, Nauka, p.128 (in Rus.)
    UK
     
    Tindle, A.G. (2008) Minerals of Britian and Ireland
    www.minsocam.org
    • Wales
      • Conwy (Gwynedd; Caernarvonshire)
        • Northern Snowdonia
    Eur. J. Mineral. , 1993, 5, pp. 925-935.
    USA
     
    • Alaska
      • Kenai Peninsula Borough
        • Kachemak Bay
          • Seldovia
    Geological Society of America Bulletin, 1974, V 85, N 2, pp. 285-292.
    • Arizona
      • Santa Cruz Co.
        • Santa Rita Mts
          • Tyndall District
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 403.
    • California
      • Siskiyou Co.
        • Cascade Range
          • Little Mount Hoffman
    Mertzman, S.A. (1978) A tschermakite-bearing high-alumina olivine tholeite from the Southern Cascades, California. Contributions to Mineralogy and Petrology: 67: 261-265; Pemberton, H. Earl (1983), Minerals of California: 401-402.
    • Georgia
      • Rabun Co.
    American Mineralogist, Volume 72, pages 1086-1096, 1987
    • Kentucky
      • Calloway Co.
    American Mineralogist, Volume 94, pages 1483–1486, 2009
    • North Carolina
    Stapor, Frank W.Jr and Flaisher, Chris, Mar, 2006, Altered Amphibolite Hypotheisis for the origin of Todd- type Chlorite Bodies in the Ashe Formation , North west North Carolina: Evidence from Amphibole Mineralogy and Pargentic Sequence
    Stapor, Frank W. Jr and Flaisher, Chris, Mar , 2006, Altered Amphibolite Hypotheisis for the origin of Todd- type Chlorite Bodies in the Ashe Formation, North west North Carolina : Evidence from Amphibole Mineralogy and Pargentic Sequence, Earth Sciences, Tennessee Technological University
      • Clay Co.
    Lang, 2001
      • Davie Co.
    McSween,Jr,Harry Y.,Sando,Thomas W.,Clark,Stephan R.,Harden,James T.,and Strange,E.Allison (1984) The Gabbro-Metagabbro Association Of The Southern Appalachian Piedmont,America Journal Of Science,Vol.284,April/May,1984,p.437-461
      • Jackson Co.
    Nathan Clay Collins (2011) Geochemical Systematics Among Amphibolitic Rocks in the Central Blue Ridge Province of southwestern North Carolina: University of South Florida
      • Macon Co.
    Nathan Clay Collins (2011) Geochemical Systematics Among Amphibolitic Rocks in the Central Blue Ridge Province of southwestern North Carolina:University of South Florida
        • Cowee Valley
          • Ellijay District
            • Franklin
    EL-Shazley,A.K.,Loehn C.,and Tracy R.J.,(2011) P-T-t evolution of granulite facies metamorphism and partial melting in the Winding Stair Gap,Central Blue Ridge,North Carolina,USA: Journal of Metamorphic Geology
    Collins,Nathan Clay(2011) Geochemical Systematics among amphibolitic Rocks in the Central Blue Ridge Province of southwestern North Carolina:University of South Florida
      • Mecklenburg Co.
    McSween Jr,Harry Y.,Sando,Thomas W.,Clark,Stephen R.,Harden,James T.,and Strange,E.Allison (1984) The Gabbro-MetaGabbro Association Of The Southern Appalachian Piedmont,American Journal Of Science,Vol.,284,April/May,1984,P.437-461
      • Rowan Co.
    McSween,Jr,Harry Y.,Sando,Thomas W.,Clark,Stephan R.,Harden,James T and Strange,E.Allison (1984) The Gabbro-Metagabbro Association Of The Southern Appalachian Piedmont,American Journal Of Science, Vol.284,April/May,1984,p.437-461
    Stapor, Frank,W.Jr, and Flaisher,Chris, Mar, 2006, Altered Amphibolite Hypotheisis for the orgin of Todd - type Chlorite Bodies in the Ashe Formation Northwest North Carolina : Evidence from Amphibole Mineralogy and Pargentic Sequence, Earth Sciences, Tennessee Technological University
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