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Taramite Group

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Vali-Tarama ravine, Mariupol' Massif (Oktyabr'skii), Azov Sea Region, Donets'k Oblast' (Donetsk Oblast'), Ukraine
© Roberto Bosi

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Formula:
A(CaNa)(Z
2+
3
Z
3+
2
)(Al
 
2
Si
 
6
O
 
22
)((OH),F,Cl)
 
2
The taramite group minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 1.5 apfu < Z(Al+Fe3++2Ti).

The individual members of the group are defined by the dominant elements in the A, Z (= IMA C position) and W positions. The most common dominant elements in the various positions are:
A position: Na or K dominant
Z2+ position (= IMA C2+ position) : Mg or Fe2+ dominant
Z3+ position (= IMA C3+ position): Al or Fe3+ dominant
W position: (OH) or F dominant

On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
Lustre:Vitreous
Member of:Sodium-Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Name:Named for the group type locality, Walitarama, Mariupol, Ukraine.

The taramite group was redefined in the 2012 amphibole nomenclature. The following changes was made:

1) The taramite root name was redefined from the Fe2+ dominant species. The consequence of this is that all taramite group minerals without prefix pre-2012 will now have a ferro-prefix, and all taramite group minerals with a magnsio-prefix pre-2012 will now be without prefix.

2) Pre 2012, taramite and magnesiotaramite was defined with with Al ≈ Fe. Magnesiotaramite is now discredited, being either taramite or ferri-taramite, depending whether Al or Fe3+ is dominant, and taramite is redefined to be the Mg and Al dominant species in the group

3) The taramite group is in the 2012 nomenclature defined with C(Al+Fe3++2Ti)>1,5 apfu, whereas the pre-2012 definition was used the T position, i.e 5,5 < Si < 6,5 apfu. This redefinition does not change the formula, but some amphiboles qualifying as taramite group members pre-2012 may now belong to the katophorite group.
This page provides mineralogical data about Taramite Group.

Classification of Taramite Group

IMA status:Approved
Hey's CIM Ref.:16.24.13

16 : Silicates Containing Aluminum and other Metals
24 : Aluminosilicates of Fe, Mg, Ca and alkalis
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Type Occurrence of Taramite Group

Type Locality:Vali-Tarama ravine, Mariupol' Massif (Oktyabr'skii), Azov Sea Region, Donets'k Oblast' (Donetsk Oblast'), Ukraine

Physical Properties of Taramite Group

Lustre:Vitreous

Chemical Properties of Taramite Group

Formula:
A(CaNa)(Z
2+
3
Z
3+
2
)(Al
 
2
Si
 
6
O
 
22
)((OH),F,Cl)
 
2


The taramite group minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 1.5 apfu < Z(Al+Fe3++2Ti).

The individual members of the group are defined by the dominant elements in the A, Z (= IMA C position) and W positions. The most common dominant elements in the various positions are:
A position: Na or K dominant
Z2+ position (= IMA C2+ position) : Mg or Fe2+ dominant
Z3+ position (= IMA C3+ position): Al or Fe3+ dominant
W position: (OH) or F dominant

On mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.

Relationship of Taramite Group to other Species

Member of:Sodium-Calcium Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Other Members of Group:

- +
Barroisite group
☐{CaNa}{Z
2+
3
Z
3+
2
}(AlSi
 
7
O
 
22
)((OH),F,Cl)
 
2
Katophorite Group
A(CaNa)(Z
2+
4
Z
3+
 
)(AlSi
 
7
O
 
22
)((OH),F,Cl)
 
2
Richterite group
{A}{CaNa}{Z
 
5
}(Si
 
8
O
 
22
)((OH),F,Cl)
 
2
Winchite Group
☐{CaNa}{C
2+
4
C
3+
 
}(Si
 
8
O
 
22
)W
 
2
Group Members:
Ferri-fluoro-taramite
Na(CaNa)(Mg
 
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)F
 
2
Ferri-taramite
Na(CaNa)(Mg
 
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Ferro-ferri-fluoro-taramite
Na(CaNa)(Fe
2+
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)F
 
2
Ferro-ferri-taramite
Na(CaNa)(Fe
2+
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Ferro-fluoro-taramite
Na(CaNa)(Fe
2+
3
Al
 
2
)(Al
 
2
Si
 
6
O
 
22
)F
 
2
Ferro-taramite
Na(CaNa)(Fe
2+
3
Al
 
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Fluoro-taramite
{Na}{CaNa}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)F
 
2
Potassic-ferri-taramite
K(CaNa)(Mg
 
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
Potassic-ferro-taramite
K{CaNa}{Fe
2+
3
Al
 
2
}{Si
 
6
Al
 
2
}O
 
22
(OH)
 
2
Taramite
{Na}{CaNa}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
16.24.1Aegirine-augite
(Na,Ca)(Fe
3+
 
,Fe
2+
 
,Mg,Al)Si
 
2
O
 
6
16.24.2Omphacite
(Ca,Na)(Mg,Al)Si
 
2
O
 
6
16.24.4Ferri-katophorite
Na(CaNa)(Mg
 
4
Fe
3+
 
)(AlSi
 
7
O
 
22
)(OH)
 
2
16.24.5Ferro-ferri-katophorite
NaCaNaFe
2+
4
(Fe
3+
 
)[(AlSi
 
7
)O
 
22
](OH)
 
2
16.24.6Barroisite
☐{CaNa}{Mg
 
3
Al
 
2
}(AlSi
 
7
O
 
22
)(OH)
 
2
16.24.7Ferri-barroisite
☐(CaNa)(Mg
 
3
Fe
3+
2
)(AlSi
 
7
O
 
22
)(OH)
 
2
16.24.8Alumino-ferrobarroisite
☐{CaNa}{Fe
2+
3
Al
 
2
}(AlSi
 
7
O
 
22
)(OH)
 
2
16.24.9Ferro-barroisite
☐{CaNa}{Fe
2+
3
Al
 
2
}(AlSi
 
7
O
 
22
)(OH)
 
2
16.24.10Ferro-ferri-barroisite
☐(CaNa)(Fe
2+
3
Fe
3+
2
)(AlSi
 
7
O
 
22
)(OH)
 
2
16.24.11Hastingsite
{Na}{Ca
 
2
}{Fe
2+
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.24.12Magnesio-hastingsite
{Na}{Ca
 
2
}{Mg
 
4
Fe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.24.14Ferri-taramite
Na(CaNa)(Mg
 
3
Fe
3+
2
)(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.24.15Magnesiotaramite
{Na}{CaNa}{Mg
 
3
AlFe
3+
 
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
16.24.16Osumilite-(Mg)
KMg
 
2
Al
 
3
(Al
 
2
Si
 
10
)O
 
30
16.24.16Osumilite
(K,Na)(Fe
2+
 
,Mg)
 
2
(Al,Fe
3+
 
)
 
3
(Si,Al)
 
12
O
 
30

Other Names for Taramite Group

Synonyms:
Tamarite (of Ford)
Other Languages:
German:Taramit
Russian:Тарамит
Simplified Chinese:绿闪石
Spanish:Taramita
Varieties:
Mboziite

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 Taramite Group

Reference List:

- +
Morozewicz J. (1923), Bull. Service géologique Pologne, 2, 6.

Tschermaks Mineralogische und Petrographische Mitteilungen (1925): 38: 210.

Mineralogical Record: 2: 169-174.

American Mineralogist (1997): 82: 1026.

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

Hawthorne, F. C., Oberti, R., Harlow, G. E., Maresch, W. V., Martin, R.F. Schumacer, J.C. & Welch, M.D. (2012): Nomenclature of the amphibole supergroup. American Mineralogist. 97, 2031–2048

Internet Links for Taramite Group

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Taramite details from Handbook of Mineralogy (PDF)
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    • Localities for Taramite Group

    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.
    Hide Locality List
    (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
     
    • Bahia
      • Itarantim
    		Conceicao, Herbet, Rosa, Maria de Lourdes da Silva, Moura, Candido A. V., Macambira, Moacir Jose Buenano, Galaraza, Marco Antonio, Correia Rios, Debora, Marinho, Moacyr Moura, Menezes, Rita Cunha Leal, Cunha, Monica Prisgsheim, 2009, Petrology of the Neoproterozoic Itarantim Nepheline Syenite Batholith, Sao Francisco Craton, Bahia, Brazil, Canadian Mineralogist, v 47, p. 1527-1550.
    • Minas Gerais
      • Jequitinhonha valley
    		Arliguie M collection
    Canada
     
    • Ontario
      • Hastings Co.
        • Dungannon Township
    		[Ferro-ferri-taramite] Hawthorne,F.C.& Grundy H.D., 1978, Can.Min. V16, p.53
    China
     
    • Anhui Province
      • Anqing Prefecture
        • Qianshan Co.
    		Eur. J. Mineral. , 1995, 7, pp. 119-138.
        • Yuexi Co.
    		www.scienceinchina.com/ky/0008/ky0748.pdf.
    • Henan Province
      • Luoyang Prefecture
        • Song Co.
          • Qiyugou ore field
    		Jingwen Mao, Goldfarb, R.J., Zhengwei Zhang, Wenyi Xu, Yumin Qiu, and Jun Deng (2002): Mineralium Deposita 37(3/4), 306-325.
      • Xinyang Prefecture
        • Xin Co.
    		Ruyuan Zhang and Liou, J.G. (1994): European Journal of Mineralogy 6(2), 217-233.
    • Jiangsu Province
      • Lianyungang Prefecture
        • Donghai Co.
    		Hirajima, T., Zhang, R., Li, J., and Cong, B. (1992): Mineralogical Magazine 56(1), 37-46.
    • Xinjiang (Xinjiang-Uygur) Autonomous Region
      • Yili Hasake (Ili Kazakh) Autonomous Prefecture
    		Wei Lin and Masaki Enami (2006): Island Arc 15(4), 483-502.
    France
     
    • Pays de Loire
    		www.scienceinchina.com/ky/0008/ky0748.pdf.
    Guatemala
     
    • Motagua Valley
    		Mikhail Ostrooumov and Alfredo Victoria Morales (2010) Mexican jadeite-bearing rock: a first mineralogical and gemmological approach. The Journal of Gemmology, Vol. 32, No. 1–4.
    Italy
     
    • Liguria
      • Savona Province
        • Varazze
    		[Ferri-taramite] Balestra, C., Kolitsch, U., Blass, G., Callegari, A.M., Boiocchi, M., Armellino, G., Ciriotti, M.E., Ambrino, P. Bracco, R. (2009): Mineralogia ligure 2007-2008: novità caratterizzate dal Servizio UK dell’AMI. Micro, 1-2009, 78-99.
    • Piedmont
      • Cuneo Province
        • Dora Maira Massif
          • Varaita Valley
            • Brossasco
    		Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
    T. Hirajima and R. Compagnoni : "Petrology of a jadeite-quartz-almandine-phengite fels with retrograde ferro-nyböite from the Dora-Maira Massif, Western Alps", Eur. Journ. Mineral., 1993, 5, pp 943-955.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Gunma Prefecture
    		Tanabe et al (1982) Proceedings of the Japan Academy, Series B, 58, 199-203.
    Kato, A. (2009) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, #27, 410-415.
    Madagascar
     
    • Fianarantsoa Province
      • Matsiatra Region
        • Ikalamavony Pegmatite Field
          • Ikalamavony District
            • Tsitondroina Commune
    		De Ascenção Guedes, R., Lebocey, J. & Bayle, L.-D. (2010): Munich 2010. Le Règne Minéral. 96 (Nov-Déc 2010): 27-44 [p.40-41]
    Norway
     
    • Sogn og Fjordane
      • Nordfjord
    		[Taramite] Ungaretti, L., Smith, D.C. (1981): Crystal-chemistry by x-ray structure refinement and electron microprobe analysis of a series of sodic-calcic to alkali-amphiboles from the Nybö eclogite pod, Norway. Bulletin Société Française de Minéralogie et de Cristallographie. 104: 400–412
      • Selje
        • Liset
    		[Ferro-taramite] Oberti, R., Boiocchi, M., Smith, D.C. & Medenbach, O. (2007): Alumotaramite, alumino-magnesiotaramite, and fluoro-alumino-magnesiotaramite: Mineral data and crystal chemistry. American Mineeralogist. 92: 1428-1435
        • Nordpollen
    		Carswell, D. A., Brueckner,H. K.,Cuthbert, S. J.,Mehta, K. & O'Brien,P. J. (2003): The timing of stabilisation and the exhumation rate for ultra-high pressure rocks in the Western Gneiss Region of Norway. Journal of Metamorphic Geology. 21, 601-612.
    Carswell, D. A., Brueckner,H. K.,Cuthbert, S. J.,Mehta, K. & O'Brien,P. J. (2003): The timing of stabilisation and the exhumation rate for ultra-high pressure rocks in the Western Gneiss Region of Norway. Journal of Metamorphic Geology. 21, 601-612.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		[Ferri-taramite] Konopleva, N.G., Ivanyuk, G.Y., Pakhomovsky, Y.A., Yakovenchuk, V.N., Men’shikov, Y.P., and Korchak, Y.A. (2008): Geology of Ore Deposits 50(8), 720-731.
    Somaliland
     
    • Hargeisa (Hargeysa)
      • Borama District
    		www.koeln.netsurf.de/~w.steffens/other.htm
    [var: Mboziite] Mineralogical Magazine 1964 33 : 1057-1065.
    Spain
     
    • Andalusia
      • Almería
    		CanMin 40:67-83
    [Potassic-ferro-taramite] Obertii, R., Boiocchi, M., Smith, D.C. Mendenbach, O. & Helmers H. (2008): Potassic-aluminotaramite from Sierra de los Filabres, Spain. European Journal of Mineralogy. 20: 1005–1010
    Switzerland
     
    • Wallis (Valais)
      • Anniviers Valley
        • Saint-Luc
    		[Ferri-taramite] Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
        • Vissoie
    		[Ferri-taramite] Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
    Tanzania
     
    • Mbeya Region
    		[var: Mboziite] Mineralogical Magazine 1964 33 : 1057-1065.
    Ukraine
     
    • Dnipropetrovs'k Oblast' (Dnepropetrovsk Oblast')
      • Ukrainian Shield
    • Donets'k Oblast' (Donetsk Oblast')
      • Azov Sea Region
        • Mariupol' Massif (Oktyabr'skii)
    		[Ferro-ferri-taramite] Morozewicz, J. (1925) Uber einige Eisenalkali-amphibole. Tschermaks Mineral.Petrog. Mitt., Volume 38, pp 210-222
    USA
     
    • California
      • Mendocino Co.
        • Pieta
    		[Ferro-ferri-taramite] Gunnar Farber
    • New Hampshire
      • Carroll Co.
        • Moultonborough
    		Journal of Petrology 30(3):627-666 (1989)
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