Magnesiostaurolite (original) (raw)
A valid IMA mineral species
About MagnesiostauroliteHide
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Formula:
Mg(Mg,Li)3(Al,Mg)18Si8O44(OH)4
Colour:
Colorless, light cloudy gray, tan
Lustre:
Vitreous, Sub-Vitreous
Specific Gravity:
3.54 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 2003 by C. Chopin, B. Goffe, L. Ungaretti, and R. Oberti in allusion to its chemical composition with dominant magnesium, and its relationship to staurolite.
This page provides mineralogical data about Magnesiostaurolite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2479:8
83a065ba-7772-4cd4-ac15-be1c9339cd32
IMA Classification of MagnesiostauroliteHide
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Type description reference:
Classification of MagnesiostauroliteHide
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9.AF.30
9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
Mineral SymbolsHide
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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.
| Symbol | Source | Reference |
|---|---|---|
| Mst | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Mst | Whitney & 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 |
Physical Properties of MagnesiostauroliteHide
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Transparency:
Transparent, Translucent
Colour:
Colorless, light cloudy gray, tan
Cleavage:
Distinct/Good
{010}
Fracture:
Irregular/Uneven
Density:
3.54 g/cm3 (Calculated)
Chemistry of MagnesiostauroliteHide
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Mindat Formula:
Mg(Mg,Li)3(Al,Mg)18Si8O44(OH)4
Crystallography of MagnesiostauroliteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.871 Å, b = 16.541 Å, c = 5.632 Å
Ratio:
a:b:c = 0.476 : 1 : 0.34
Morphology:
Stout blades, rarely elongated.
Twinning:
Sometimes tweed texture.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0006961 | Magnesiostaurolite | Chopin C, Goffe B, Ungaretti L, Oberti R (2003) Magnesiostaurolite and zincostaurolite: mineral description with a petrogenetic and crystal-chemical update European Journal of Mineralogy 15 167-176 | 2003 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 1.968 Å | (100) |
| 1.391 Å | (82) |
| 2.390 Å | (50) |
| 2.678 Å | (38) |
| 2.370 Å | (33) |
| 4.139 Å | (24) |
| 2.356 Å | (24) |
Geological EnvironmentHide
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Type Occurrence of MagnesiostauroliteHide
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General Appearance of Type Material:
Rare anhedral isolated grains with size ranging from a few tens to 250 μm.
Place of Conservation of Type Material:
School of Mines, Paris, France, no. 56244.
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.
Associated Minerals at Type Locality:
Reference:
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.
Synonyms of MagnesiostauroliteHide
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Other Language Names for MagnesiostauroliteHide
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Relationship of Magnesiostaurolite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.AF. | Chegemite | Ca7(SiO4)3(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
|---|---|---|---|
| 9.AF. | Jingwenite-(Y) | YAlV4+(SiO4)O2(OH)2 | Mon. 2/m |
| 9.AF. | Barwoodite | Mn2+6Nb5+(SiO4)2O3(OH)3 | Trig. 3 : _P_3 |
| 9.AF.05 | Sillimanite | Al2(SiO4)O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.05 | Xenolite | Al10Si8O31 | |
| 9.AF.10 | Kanonaite | Mn3+Al(SiO4)O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
| 9.AF.10 | Andalusite | Al2(SiO4)O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
| 9.AF.15 | Kyanite | Al2(SiO4)O | Tric. 1 : _P_1 |
| 9.AF.20 | Krieselite | Al2(GeO4)F2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 9.AF.20 | Mullite | Al4+2xSi2-2xO10-x | Orth. m m m _(_2/_m_2/_m_2/m ) : P b a m |
| 9.AF.23 | Boromullite | Al9BSi2O19 | Orth. m _m_2 : C m _c_21 |
| 9.AF.25 | Yoderite | Mg(Al,Fe3+)3(SiO4)2O(OH) | Mon. 2/m : _P_21/m |
| 9.AF.30 | Zincostaurolite | Zn2Al9Si4O23(OH) | Mon. 2/m : _B_2/m |
| 9.AF.30 | Staurolite | Fe2+2Al9Si4O23(OH) | Mon. 2/m : _B_2/m |
| 9.AF.35 | Topaz | Al2(SiO4)(F,OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.40 | Norbergite | Mg3(SiO4)F2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.45 | Chondrodite | Mg5(SiO4)2F2 | Mon. 2/m : _P_21/b |
| 9.AF.45 | Kumtyubeite | Ca5(SiO4)2F2 | Mon. 2/m : _P_21/b |
| 9.AF.45 | Reinhardbraunsite | Ca5(SiO4)2(OH,F)2 | Mon. 2/m : _P_21/b |
| 9.AF.45 | Hydroxylchondrodite | Mg5(SiO4)2(OH)2 | Mon. 2/m : _P_21/b |
| 9.AF.45 | Alleghanyite | Mn2+5(SiO4)2(OH)2 | Mon. 2/m : _P_21/b |
| 9.AF.50 | Unnamed (Ca-analogue of Humite) | Ca7(SiO4)4F2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.50 | Humite | Mg7(SiO4)3F2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 9.AF.50 | Manganhumite | (Mn2+,Mg)7(SiO4)3(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.50 | Unnamed (OH-analogue of humite) | Mg7(SiO4)3(OH)2 | Orth. |
| 9.AF.50 | Fluorchegemite | Ca7(SiO4)3F2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.55 | Hydroxylclinohumite | Mg9(SiO4)4(OH)2 | Mon. 2/m : _P_21/b |
| 9.AF.55 | Clinohumite | Mg9(SiO4)4F2 | Mon. 2/m : _P_21/b |
| 9.AF.55 | Sonolite | Mn2+9(SiO4)4(OH)2 | Mon. 2/m : _P_21/b |
| 9.AF.60 | Leucophoenicite | Mn2+7(SiO4)3(OH)2 | Mon. 2/m : _P_21/b |
| 9.AF.65 | Ribbeite | Mn2+5(SiO4)2(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.AF.70 | Jerrygibbsite | Mn2+9(SiO4)4(OH)2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 9.AF.75 | Franciscanite | Mn2+6(V5+,◻)2(SiO4)2(O,OH)6 | Trig. 3 : _P_3 |
| 9.AF.75 | Scorticoite | Mn6(Sb,◻)Σ2(SiO4)2O3(OH)3 | Trig. 3 : _P_3 |
| 9.AF.75 | Welinite | Mn2+6(W6+,Mg)2(SiO4)2(O,OH)6 | Trig. 3 : _P_3 |
| 9.AF.75 | Örebroite | Mn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3 | Trig. 3 : _P_3 |
| 9.AF.80 | Ellenbergerite | Mg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10 | Hex. 6 : _P_63 |
| 9.AF.85 | Magnesiochloritoid | MgAl2O(SiO4)(OH)2 | Mon. 2/m : _B_2/b |
| 9.AF.85 | Ottrélite | Mn2+Al2O(SiO4)(OH)2 | Mon. |
| 9.AF.85 | Chloritoid | Fe2+Al2O(SiO4)(OH)2 | Mon. 2/m : _B_2/b |
| 9.AF.90 | Olmiite | CaMn2+[SiO3(OH)](OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a |
| 9.AF.90 | Poldervaartite | CaCa[SiO3(OH)](OH) | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a |
| 9.AF.95 | Pilawite-(Y) | Ca2Y2Al4(SiO4)4O2(OH)2 | Mon. 2/m : _P_21/b |
Fluorescence of MagnesiostauroliteHide
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Creamy-yellow in shortwave, somewhat dull orange in longwave 350 nm.
Other InformationHide
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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 MagnesiostauroliteHide
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References for MagnesiostauroliteHide
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Localities for MagnesiostauroliteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
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Locality ListHide
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