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Spessartine

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Formula:
Mn2+3Al2(SiO4)3
Colour:
Red, reddish orange, yellowish brown, reddish brown, or brown
Lustre:
Vitreous
Hardness:
6½ - 7½
Specific Gravity:
4.12 - 4.32
Crystal System:
Isometric
Name:
Re-named in 1832 by François Sulpice Beudant after its type locality in the Spessart Mountains, Germany. Previously distinguished as a "manganesian" garnet by Henry Seybert in 1823 using mineral from Haddam, Connecticut, USA. Originally, this mineral, from Spessart Mountains, was called "granatförmiges Braunsteinerz" in 1797 by Martin Klaproth.
Garnet Group. Almandine-Spessartine Series.

Occurs in magmatic, metamorphic, and pegmatitic rocks.

An (OH,F)-rich, tetragonal-pseudocubic spessartine is described by Boiocchi et al. (2012).



Visit gemdat.org for gemological information about Spessartine.


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Classification of SpessartineHide

Approved, 'Grandfathered' (first described prior to 1959)
9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
51.4.3a.3

51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
16.16.2

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn

Physical Properties of SpessartineHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Red, reddish orange, yellowish brown, reddish brown, or brown
Streak:
White
Hardness:
6½ - 7½ on Mohs scale
Fracture:
Sub-Conchoidal
Density:
4.12 - 4.32 g/cm3 (Measured)    4.19 g/cm3 (Calculated)

Optical Data of SpessartineHide

Type:
Isotropic

Chemical Properties of SpessartineHide

Formula:
Mn2+3Al2(SiO4)3
Common Impurities:
Ti,Fe,Mg,Ca,H2O,Y

Crystallography of SpessartineHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Cell Parameters:
a = 11.63 Å
Unit Cell V:
1,573.04 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
2.91 (25)
2.60 (100)
2.37 (16)
1.886 (20)
1.681 (20)
1.614 (30)
1.557 (40)

Type Occurrence of SpessartineHide

Synonyms of SpessartineHide

Other Language Names for SpessartineHide

Hungarian:Spessartin
Italian:Spessartina
Simplified Chinese:锰铝榴石
Spanish:Spessartita

Varieties of SpessartineHide

BrandãositeAn Almandine-Spessartine low in (Al,Fe)2O3 [Clark, 1993, "Hey's Mineral Index"].
Calcium-EisenspessartinA variety of spessartine containing considerable Ca and Fe.
Compare also calderite.
EmildineAn yttrian variety of spessartine.
Originally reported from Walvis Bay (Walvisbaai) District, Erongo Region, Namibia.
JohnstonotiteDark red calcian spessartine containing trace impurities.
SpanditeCa-Fe-rich spessartine or Mn-Al-rich andradite.

Relationship of Spessartine to other SpeciesHide

Other Members of this group:
AlmandineFe2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
AndraditeCa3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
Berzeliite(NaCa2)Mg2(AsO4)3Iso. m3m (4/m 3 2/m) : Ia3d
Bitikleite Group
BlythiteMn2+3Mn3+2[SiO4]3
Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.
GoldmaniteCa3V3+2(SiO4)3Iso.
GrossularCa3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
HenritermieriteCa3(Mn3+,Al)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
HutcheoniteCa3Ti2(SiAl2)O12Iso. m3m (4/m 3 2/m) : Ia3d
IrinarassiteCa3Sn2Al2SiO12 Iso. m3m (4/m 3 2/m) : Ia3d
KatoiteCa3Al2(SiO4)3-x(OH)4xIso.
KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
KhohariteMg3Fe3+2(SiO4)3
KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3Iso.
KnorringiteMg3Cr2(SiO4)3Iso.
MajoriteMg3(Fe2+,Si,Al)2(SiO4)3Iso.
Menzerite-(Y){(Y,REE),(Ca,Fe2+)}3{(Mg,Fe2+),(Fe3+,Al)}2[SiO4]3Iso. m3m (4/m 3 2/m) : Ia3d
Momoiite(Mn2+,Ca)3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
MorimotoiteCa3(Ti,Fe2+,Fe3+)2((Si,Fe3+)O4)3Iso.
Palenzonaite(Ca,Na)3CaMn2+2(VO4)3Iso. m3m (4/m 3 2/m) : Ia3d
PyropeMg3Al2(SiO4)3Iso.
SchäferiteCa2NaMg2(VO4)3Iso.
SchorlomiteCa3(Ti,Fe3+)2((Si,Fe3+)O4)3Iso.
SkiagiteFe2+3Fe3+2[SiO4]3
ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
UM1984-37-SiO:CrMnMn2+3(Cr3+,Mn3+)2Si3O12
UvaroviteCa3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Smoky Quartz654 photos of Spessartine associated with Smoky Quartz on mindat.org.
Albite415 photos of Spessartine associated with Albite on mindat.org.
Muscovite415 photos of Spessartine associated with Muscovite on mindat.org.
Quartz323 photos of Spessartine associated with Quartz on mindat.org.
Microcline289 photos of Spessartine associated with Microcline on mindat.org.
Schorl126 photos of Spessartine associated with Schorl on mindat.org.
Feldspar Group122 photos of Spessartine associated with Feldspar Group on mindat.org.
Orthoclase82 photos of Spessartine associated with Orthoclase on mindat.org.
Fluorite70 photos of Spessartine associated with Fluorite on mindat.org.
Aquamarine58 photos of Spessartine associated with Aquamarine on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AD.05LarniteCa2SiO4Mon.
9.AD.10Calcio-olivineCa2SiO4Orth. mmm (2/m 2/m 2/m)
9.AD.15MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
9.AD.20BredigiteCa7Mg(SiO4)4Orth.
9.AD.25AndraditeCa3Fe3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25AlmandineFe2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.
9.AD.25GoldmaniteCa3V3+2(SiO4)3Iso.
9.AD.25GrossularCa3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25HenritermieriteCa3(Mn3+,Al)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AD.25HibschiteCa3Al2(SiO4)3-x(OH)4xIso. m3m (4/m 3 2/m) : Ia3d
9.AD.25HydroandraditeCa3Fe3+2(SiO4)3-x(OH)4x
9.AD.25KatoiteCa3Al2(SiO4)3-x(OH)4xIso.
9.AD.25KimzeyiteCa3(Zr,Ti)2((Si,Al,Fe3+)O4)3Iso.
9.AD.25KnorringiteMg3Cr2(SiO4)3Iso.
9.AD.25MajoriteMg3(Fe2+,Si,Al)2(SiO4)3Iso.
9.AD.25MorimotoiteCa3(Ti,Fe2+,Fe3+)2((Si,Fe3+)O4)3Iso.
9.AD.25PyropeMg3Al2(SiO4)3Iso.
9.AD.25SchorlomiteCa3(Ti,Fe3+)2((Si,Fe3+)O4)3Iso.
9.AD.25UvaroviteCa3Cr2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 4 3m : I4 3d
9.AD.25HoltstamiteCa3(Al,Mn3+)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AD.25KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25Momoiite(Mn2+,Ca)3V3+2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.25EltyubyuiteCa12Fe3+10Si4O32Cl6Iso. 4 3m : I4 3d
9.AD.25HutcheoniteCa3Ti2(SiAl2)O12Iso. m3m (4/m 3 2/m) : Ia3d
9.AD.30Coffinite(U4+,Th)(SiO4)1-x(OH)4xTet.
9.AD.30HafnonHfSiO4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30ThoriteTh(SiO4)Tet.
9.AD.30ZirconZr(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.30Stetindite-(Ce)Ce(SiO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
9.AD.35HuttoniteThSiO4Mon.
9.AD.35Tombarthite-(Y)Y4(Si,H4)4O12-x(OH)4+2xMon.
9.AD.40EulytineBi4(SiO4)3Iso. 4 3m : I4 3d
9.AD.45ReiditeZrSiO4Tet. 4/m : I41/a

Related Minerals - Dana Grouping (8th Ed.)Hide

51.4.3a.1PyropeMg3Al2(SiO4)3Iso.
51.4.3a.2AlmandineFe2+3Al2(SiO4)3Iso. m3m (4/m 3 2/m) : Ia3d
51.4.3a.4KnorringiteMg3Cr2(SiO4)3Iso.
51.4.3a.5MajoriteMg3(Fe2+,Si,Al)2(SiO4)3Iso.
51.4.3a.6Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.16.1KanonaiteMn3+Al(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
16.16.3DavreuxiteMnAl6Si4O17(OH)2Mon.
16.16.4SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
16.16.5CarpholiteMn2+Al2(Si2O6)(OH)4Orth.
16.16.6KellyiteMn2+2Al(AlSiO5)(OH)4Hex.
16.16.7PennantiteMn2+5Al(AlSi3O10)(OH)8Tric.
16.16.8AkatoreiteMn2+9Al2Si8O24(OH)8Tric.
16.16.9Ganophyllite(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2OMon.
16.16.10Mangano-ferri-eckermannite[Na][Na2][Mn2+4(Fe3+)]Si8O22(OH)2Mon.
16.16.11Masutomilite(K,Rb)(Li,Mn3+,Al)3(AlSi3O10)(F,OH)2Mon.
16.16.13HowieiteNa(Fe,Mn)10(Fe,Al)2Si12O31(OH)13Tric.
16.16.14Eggletonite(Na,K,Ca)2(Mn,Fe)8(Si,Al)12O29(OH)7 · 11H2OMon.
16.16.15Bannisterite(Ca,K,Na)(Mn2+,Fe2+)10(Si,Al)16O38(OH)8 · nH2OMon. 2/m : B2/b
16.16.16Taneyamalite(Na,Ca)(Mn,Mg,Fe)12Si12(O,OH)44Tric.
16.16.17ZussmaniteK(Fe,Mg,Mn)13(Si,Al)18O42(OH)14Trig. 3 : R3
16.16.18CoombsiteK(Mn,Fe,Mg)13(Si,Al)18O42(OH)14Trig.
16.16.19HenritermieriteCa3(Mn3+,Al)2(SiO4)2(OH)4Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
16.16.20MacfalliteCa2Mn3+3(SiO4)(Si2O7)(OH)3Mon.
16.16.21Ottrélite(Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2Mon.
16.16.22Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
16.16.23OkhotskiteCa2(Mn,Mg)(Mn3+,Al,Fe3+)2(Si2O7)(SiO4)(OH)2 · H2OMon.
16.16.24Pumpellyite-(Mn2+)Ca2Mn2+Al2(Si2O7)(SiO4)(OH)2 · H2OMon.
16.16.25Piemontite-(Sr){CaSr}{Al2Mn3+}(Si2O7)(SiO4)O(OH)Mon.

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.

Spessartine in petrologyHide

An essential component of (items highlighted in red)
Common component of (items highlighted in red)

References for SpessartineHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Novak, G.A., Gibbs, G.V. (1971) The crystal chemistry of the silicate garnets. American Mineralogist: 56: 791.
Rossman, G.R., Rauch, F., Livi, R., Tombrello, T.A., Shi, C.R., Zhoi, Z.Y. (1988) Nuclear reaction analysis of hydrogen in almandine, pyrope and spessartine garnets. Neues Jahrbuch für Mineralogie Monatshefte: 4: 172-178.
Smyth, J.R., Madel, R.E., McCormick, T.C., Munoz, J.L., Rossman, G.R. (1990) Crystal structure refinement of a F-bearing spessartine garnet. American Mineralogist: 75: 314-318.
Boiocchi, M., Bellatreccia, F., Della Ventura, G., Oberti, R. (2012) On the symmetry and atomic ordering in (OH,F)-rich spessartine: towards a new hydrogarnet end-member. Zeitschrift für Kristallographie: 227: 385-395.

Internet Links for SpessartineHide

Localities for SpessartineHide

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 ListShow

Mineral and/or Locality  
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