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About MagnesiostauroliteHide

7 - 7½
Specific Gravity:
3.54 (Calculated)
Crystal System:
Named in allusion to its composition, with its chemical composition with dominant magnesium, and its relationship to Staurolite.

Classification of MagnesiostauroliteHide

Approval Year:

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
Dana 7th ed.:

Physical Properties of MagnesiostauroliteHide

7 - 7½ on Mohs scale
3.54 g/cm3 (Calculated)

Chemical Properties of MagnesiostauroliteHide


Crystallography of MagnesiostauroliteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 7.871 Å, b = 16.541 Å, c = 5.632 Å
a:b:c = 0.476 : 1 : 0.34
Unit Cell V:
733.3 ų
Sometimes tweed texture.

Type Occurrence of MagnesiostauroliteHide

Geological Setting of Type Material:
occurs together with talc, clinochlore and kyanite (or alone, armouring corundum) as inclusions in pyrope megablasts from the ultra-high-pressure metamorphic terrane of the Dora-Maira massif, Italian Western Alps.

Synonyms of MagnesiostauroliteHide

Other Language Names for MagnesiostauroliteHide

Relationship of Magnesiostaurolite to other SpeciesHide

Other Members of this group:
StauroliteFe2+2Al9Si4O23(OH)Mon. 2/m : B2/m
ZincostauroliteZn2Al9Si4O23(OH)Mon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Magnesiostaurolite associated with EllenbergeriteMg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10
3 photos of Magnesiostaurolite associated with RutileTiO2

Related Minerals - Nickel-Strunz GroupingHide

9.AF.ChegemiteCa7(SiO4)3(OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.BarwooditeMn2+6Nb5+(SiO4)2O3(OH)3Trig. 3 : P3
9.AF.05SillimaniteAl2(SiO4)OOrth. mmm (2/m 2/m 2/m)
9.AF.10AndalusiteAl2(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.10KanonaiteMn3+Al(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.15KyaniteAl2(SiO4)OTric. 1 : P1
9.AF.20MulliteAl4+2xSi2-2xO10-xOrth. mmm (2/m 2/m 2/m) : Pbam
9.AF.20Krieselite(Al,Ga)2(GeO4)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
9.AF.23BoromulliteAl9BSi2O19Orth. mm2 : Cmc21
9.AF.25YoderiteMg(Al,Fe3+)3(SiO4)2O(OH)Mon. 2/m : P21/m
9.AF.30StauroliteFe2+2Al9Si4O23(OH)Mon. 2/m : B2/m
9.AF.30ZincostauroliteZn2Al9Si4O23(OH)Mon. 2/m : B2/m
9.AF.35TopazAl2(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.40NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.45AlleghanyiteMn2+5(SiO4)2(OH)2Mon. 2/m : P21/b
9.AF.45Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2Mon. 2/m : P21/b
9.AF.45ReinhardbraunsiteCa5(SiO4)2(OH,F)2Mon. 2/m : P21/b
9.AF.45KumtyubeiteCa5(SiO4)2F2Mon. 2/m : P21/b
9.AF.45HydroxylchondroditeMg5(SiO4)2(OH)2Mon. 2/m : P21/b
9.AF.50Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
9.AF.50Unnamed (Ca-analogue of Humite)Ca7(SiO4)4F2Orth. mmm (2/m 2/m 2/m)
9.AF.55ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
9.AF.55HydroxylclinohumiteMg9(SiO4)4(OH)2Mon. 2/m
9.AF.60LeucophoeniciteMn2+7(SiO4)3(OH)2Mon. 2/m : P21/b
9.AF.70JerrygibbsiteMn2+9(SiO4)4(OH)2Orth. mmm (2/m 2/m 2/m) : Pbcn
9.AF.75WeliniteMn2+6(W6+,Mg)2(SiO4)2(O,OH)6Trig. 3 : P3
9.AF.85Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2Mon. 2/m : B2/b
9.AF.85MagnesiochloritoidMgAl2(SiO4)O(OH)2Mon. 2/m : B2/b
9.AF.90PoldervaartiteCaCa[SiO3(OH)](OH)Orth. mmm (2/m 2/m 2/m) : Pbca
9.AF.90OlmiiteCaMn2+[SiO3(OH)](OH)Orth. mmm (2/m 2/m 2/m) : Pbca

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 MagnesiostauroliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Terra Nova, Abstract supplement 1, 9, 40.
Enami, M. and Zang, Q. (1988) Magnesian staurolite in gamet-corundum rocks and eclogite from the Donghai district, Jiangsu province, east China. American Mineralogist, 73, 48-56.
Peacock, S. M.; Goodge, J. W. (1995): Eclogite-​facies metamorphism preserved in tectonic blocks from a lower crustal shear zone, central Transantarctic Mountains, Antarctica. Lithos 36, 1-13.
Chopin, C., Goffé, B., Ungaretti, L., and Oberti, R. (2003) Magnesiostaurolite and zincostaurolite; mineral description with a petrogenetic and crystal-chemical update. European Journal of Mineralogy, 15, 167-176.
Tsunogae, Toshiaki; van Reenen, Dirk D. (2006): Corundum + quartz and Mg-​staurolite-​bearing granulite from the Limpopo Belt, southern Africa: Implications for a P-​T path. Lithos 92, 576-587.
Nishimiya, Yuki; Tsunogae, Toshiaki; Santosh, M. (2010): Sapphirine + quartz corona around magnesian (XMg ∼0.58) staurolite from the Palghat-​Cauvery Suture Zone, southern India: Evidence for high-​pressure and ultrahigh-​temperature metamorphism within the Gondwana suture. Lithos 114, 490-502.

Internet Links for MagnesiostauroliteHide

Localities for MagnesiostauroliteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Jiangsu
    • Lianyungang
      • Donghai Co.
        • Zhimafang
Zhang, R.Y., Liou, J.G., and Zheng, J.P. (2004): Contributions to Mineralogy and Petrology 147, 21-31.
Italy (TL)
  • Piedmont
    • Cuneo Province
      • Brossasco
Terra Nova, Abstract supplement 1, 9, 40; European Journal of Mineralogy (2003), 15, 167-176; Simon, G. & Chopin, C. (2001): Enstatite-sapphirine crack-related assemblages in ultrahigh-pressure pyrope megablasts, Dora-Maira massif, western Alps. Contributions to Mineralogy and Petrology 140, 422-440.
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.
      • Martiniana Po
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.
      • Sampeyre
        • Isasca valley
Paolo Bozio data
New Zealand
  • Southland Region
    • Southland District
      • Fiordland National Park
C. M. Ward (1984) Magnesium staurolite and green chromian staurolite from Fiordland, New Zealand . American Mineralogist, Volume 69, pages 531-540.
  • Troms og Finnmark
    • Tromsø
Janák, M., Uher, P., Ravna, E.K., Kullerud, K., Vrabec, M. (2015): Chromium-rich kyanite, magnesiostaurolite and corundum in ultrahigh-pressure eclogites (examples from Pohorje Mountains, Slovenia and Tromsø Nappe, Norway). European Journal of Mineralogy: 27(3): 377-392
Janák, M., Uher, P., Ravna, E.K., Kullerud, K., Vrabec, M. (2015): Chromium-rich kyanite, magnesiostaurolite and corundum in ultrahigh-pressure eclogites (examples from Pohorje Mountains, Slovenia and Tromsø Nappe, Norway). European Journal of Mineralogy: 27(3): 377-392
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