Spessartine
A valid IMA mineral species - grandfathered
This page kindly sponsored by Charles Rothera
About Spessartine
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
Member of:
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).
Not to be confused with the rock spessartite.
Occurs in magmatic, metamorphic, and pegmatitic rocks.
An (OH,F)-rich, tetragonal-pseudocubic spessartine is described by Boiocchi et al. (2012).
Not to be confused with the rock spessartite.
Visit gemdat.org for gemological information about Spessartine.
Unique Identifiers
Mindat ID:
3725
Long-form identifier:
mindat:1:1:3725:5
GUID
(UUID V4):
(UUID V4):
091858bd-4373-4081-bb48-ecdd14d1b977
IMA Classification of Spessartine
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Spessartine
9.AD.25
9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
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
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
16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
Mineral Symbols
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.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Sps | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Spr | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
Sps | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Sps | 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 |
Sps | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Spessartine
Vitreous
Transparency:
Transparent, Translucent
Colour:
Red, reddish orange, yellowish brown, reddish brown, or brown
Comment:
The “alexandrite effect” is when its colour changes from green in the presence of daylight to purplish red under incandescent light. The UV-Vis spectra show two zones of transmittance, in the red region at 650–700 nm and the blue-green region at 460–510 nm. The absorption bands of Cr3+ and V3+ at 574 nm in the UV-Vis spectra are the main cause of the change in colour.[[2]]
There are transition metal elements in garnet, and the main theory of its color formation is crystal field theory. Fe2+ and Mn2+ are the main color-causing ions in purple pyrope–almandines, for Mg2+ is insignificant for the color of the samples. As an island silicate mineral, peridot’s beautiful color is also caused by Fe2+. However, it is worth noting that the almandine–skiagite’s brownish yellow color is caused by the charge transfer between element ions. Spessartine’s color is vivid orange. There are many research studies on the color causes and spectrum about spessartines; we find that the reason why spessartines appear a beautiful orange is not only the Mn2+ d-d electron transition, but also the valence charge transfer transition between Fe2+and Fe3+. They obviously absorb in the area of the blue-purple region, which makes the spessartines appear a bright color. As one of the most promising colored gemstones on the market, spessartine is becoming increasingly popular. According to the CIE 1976 L*a*b*, the relationship between chroma C*, the h° and colorate coordinates a* and b* was analyzed. The chemical composition was analyzed according to ED-XRF, then we quantitatively analyzed the impact of the elements FeOtot and MnO and the ratio FeOtot/MnO on color parameters L*, h°. By analyzing the UV-visible spectrum of spessartines, we find the color mechanism of the samples. It is worth noting that this article is the first to studied the relationship between the peaks’ position in the infrared spectrum and the color parameters of spessartines. With the increase in MnO content, the A, C and D peaks in the infrared spectrum shifted from the region of high frequency to low frequency, the color parameters L* and h° both increased, and the spessartines’ color also changed from dark orange-red to bright orange. [[1]]
There are transition metal elements in garnet, and the main theory of its color formation is crystal field theory. Fe2+ and Mn2+ are the main color-causing ions in purple pyrope–almandines, for Mg2+ is insignificant for the color of the samples. As an island silicate mineral, peridot’s beautiful color is also caused by Fe2+. However, it is worth noting that the almandine–skiagite’s brownish yellow color is caused by the charge transfer between element ions. Spessartine’s color is vivid orange. There are many research studies on the color causes and spectrum about spessartines; we find that the reason why spessartines appear a beautiful orange is not only the Mn2+ d-d electron transition, but also the valence charge transfer transition between Fe2+and Fe3+. They obviously absorb in the area of the blue-purple region, which makes the spessartines appear a bright color. As one of the most promising colored gemstones on the market, spessartine is becoming increasingly popular. According to the CIE 1976 L*a*b*, the relationship between chroma C*, the h° and colorate coordinates a* and b* was analyzed. The chemical composition was analyzed according to ED-XRF, then we quantitatively analyzed the impact of the elements FeOtot and MnO and the ratio FeOtot/MnO on color parameters L*, h°. By analyzing the UV-visible spectrum of spessartines, we find the color mechanism of the samples. It is worth noting that this article is the first to studied the relationship between the peaks’ position in the infrared spectrum and the color parameters of spessartines. With the increase in MnO content, the A, C and D peaks in the infrared spectrum shifted from the region of high frequency to low frequency, the color parameters L* and h° both increased, and the spessartines’ color also changed from dark orange-red to bright orange. [[1]]
Streak:
White
Hardness:
6½ - 7½ on Mohs scale
Tenacity:
Brittle
Fracture:
Sub-Conchoidal
Density:
4.12 - 4.32 g/cm3 (Measured) 4.19 g/cm3 (Calculated)
Optical Data of Spessartine
Type:
Isotropic
RI values:
n = 1.800
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Very High
Chemistry of Spessartine
Mindat Formula:
Mn2+3Al2(SiO4)3
Elements listed:
Common Impurities:
Ti,Fe,Mg,Ca,H2O,Y
Chemical Analysis
Oxide wt%:
1 | 2 | 3 | 4 | 5 | |
---|---|---|---|---|---|
SiO2 | 35.83 % | 34.8 % | 35.1 % | 35.2 % | 36.3 % |
TiO2 | 0.05 % | 0.05 % | 0.04 % | 0.10 % | 0.07 % |
Al2O3 | 20.73 % | 20.5 % | 20.3 % | 19.9 % | 20.56 % |
Cr2O3 | 0.03 % | 0 % | 0 % | 0 % | % |
FeO | 20.42 % | 17.4 % | 0.6 % | 12 % | 2.06 % |
MnO | 23.05 % | 21.3 % | 40.0 % | 28.1 % | 40.67 % |
MgO | 0.00 % | 0.77 % | 0 % | 0.29 % | % |
CaO | 0.23 % | % | 0.62 % | 0.26 % | 0.18 % |
Na2O | 0.02 % | 0.12 % | 0 % | 0.08 % | % |
Fe2O3 | % | 1.0 % | 3.6 % | 2 % | % |
K2O | % | 0 % | % | % | % |
Sc2O3 | % | 0.084 % | 0 % | 0.011 % | % |
REE2O3 | % | 1.41 % | 0.045 % | 0.36 % | % |
V2O5 | % | 0 % | 0 % | 0 % | % |
ZnO | % | 0 % | 0.048 % | 0.028 % | % |
Y2O3 | % | 1.50 % | 0.052 % | 1.3 % | % |
Total: | 100.36 % | 98.934 % | 100.405 % | 99.629 % | 99.84 % |
Empirical formulas:
Sample ID | Empirical Formula |
---|---|
1 | sps54.43alm44,88 |
2 | alm42,29sps52,44 |
3 | sps96.97alm1.34 |
4 | sps68.89alm29.05 |
Sample references:
ID | Locality | Reference | Notes |
---|---|---|---|
1 | Dassu, Braldu Valley, Shigar District, Gilgit-Baltistan, Pakistan | Analysis from the rim of a pegmatite garnet. | |
2 | Frikstad 07 Feldspar Quarry, Frikstad, Iveland, Agder, Norway | The sample is a homogenous garnet from "primitive" REE rich pegmatite. Sample analyzed with EMPA and LA-ICP-MS, and the results are the average of 6 analyzes. | |
3 | Solås Pegmatite, Iveland, Agder, Norway | Sample from cleavelandite zone in pegmatite. The sample is analyzed using EMPA and LA-ICP-MS, and the results are the average of 4 analyzes. | |
4 | " " | Sample from intermediate zone in pegmatite. The sample is analyzed using EMPA and LA-ICP-MS, and the results are the average of 4 analyzes | |
5 | Hercules Mine, Ramona, Ramona Mining District, San Diego County, California, USA | Analyzed sample is a light orangy yellow spessartine. Analysis by Cameca SX-50 electron microprobe, with minerals or synthetic compounds as standards, an accelerating voltage of 20 kV, sample current of 15 mA. |
Crystallography of Spessartine
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Ia3d
Setting:
Ia3d
Cell Parameters:
a = 11.621 Å
Unit Cell V:
1,569.39 ų (Calculated from Unit Cell)
Z:
8
Morphology:
euhedral crystals, dodecahedra or trapezohedra, or in combination with other cubic forms, to 10 cm.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0000241 | Spessartine | Novak G A, Gibbs G V (1971) The crystal chemistry of the silicate garnets sample Sp American Mineralogist 56 791-825 | 1971 | Minas Gerais, Brazil | 0 | 293 | |
0001299 | Spessartine | 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 | 1990 | 0 | 293 | ||
0002776 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002777 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002778 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002779 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002780 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002781 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002782 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002783 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002784 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002785 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002786 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002787 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0002788 | Spessartine | Rodehorst U, Geiger C A, Armbruster T (2002) The crystal structures of grossular and spessartine between 100 and 600 K and the crystal chemistry of grossular-spessartine solid solutions American Mineralogist 87 542-549 | 2002 | 0 | 293 | ||
0009927 | Spessartine | Gramaccioli C M, Pilati T, Demartin F, (2002) Atomic displacement parameters for spessartine Mn3Al2Si3O12 and their lattice-dynamical interpretation Acta Crystallographica B58 965-969 | 2002 | Elba Isle, Campo, Italy | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
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Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.91 Å | (25) |
2.60 Å | (100) |
2.37 Å | (16) |
1.886 Å | (20) |
1.681 Å | (20) |
1.614 Å | (30) |
1.557 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4a: Earth’s earliest continental crust | >4.4-3.0 |
19 : Granitic intrusive rocks | |
20 : Acidic volcanic rocks | |
Near-surface Processes | |
26 : Hadean detrital minerals | |
High-𝑇 alteration and/or metamorphism | |
31 : Thermally altered carbonate, phosphate, and iron formations | |
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
34 : Complex granite pegmatites | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Spessartine
Synonyms of Spessartine
Other Language Names for Spessartine
Dutch:Spessartien
German:Spessartin
Spessartit
Spessartit
Hungarian:Spessartin
Italian:Spessartina
Japanese:満ばん柘榴石
Russian:Спессартин
Simplified Chinese:锰铝榴石
Spanish:Espesartina
Spessartina
Spessartina
Varieties of Spessartine
Brandãosite | An Almandine-Spessartine low in (Al,Fe)2O3 [Clark, 1993, "Hey's Mineral Index"]. Originally reported from Mangualde, Viseu District, Portugal. |
Calcium-Eisenspessartin | A variety of spessartine containing considerable Ca and Fe. Compare also calderite. |
Emildine | An yttrium-bearing variety of spessartine. Originally reported from Walvis Bay (Walvisbaai) District, Erongo Region, Namibia. |
Johnstonotite | Dark red calcian spessartine containing trace impurities. |
Spandite | Ca-Fe-rich spessartine or Mn-Al-rich andradite. |
Vanadium-bearing Spessartine | Occurs in metacherts. Contains up to 8.36 wt.% V2O3. |
Relationship of Spessartine to other Species
Member of:
Other Members of this group:
Almandine | Fe2+3Al2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Andradite | Ca3Fe3+2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Blythite | Mn2+3Mn3+2[SiO4]3 | |
Calderite | Mn2+3Fe3+2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Eringaite | Ca3Sc2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Goldmanite | Ca3V3+2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Grossular | Ca3Al2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Khoharite | Mg3Fe3+2(SiO4)3 | |
Knorringite | Mg3Cr2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Majorite | Mg3(MgSi)(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Menzerite-(Y) | (Y2Ca)Mg2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Momoiite | Mn2+3V3+2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Morimotoite | Ca3(TiFe2+)(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Pyrope | Mg3Al2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Skiagite | Fe2+3Fe3+2[SiO4]3 | |
Uvarovite | Ca3Cr2(SiO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
1,370 photos of Spessartine associated with Smoky Quartz | SiO2 |
714 photos of Spessartine associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
701 photos of Spessartine associated with Albite | Na(AlSi3O8) |
639 photos of Spessartine associated with Microcline | K(AlSi3O8) |
592 photos of Spessartine associated with Quartz | SiO2 |
259 photos of Spessartine associated with Schorl | NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH) |
217 photos of Spessartine associated with Feldspar Group | |
137 photos of Spessartine associated with Fluorite | CaF2 |
113 photos of Spessartine associated with Orthoclase | K(AlSi3O8) |
103 photos of Spessartine associated with Aquamarine | Be3Al2Si6O18 |
Related Minerals - Strunz-mindat Grouping
9.AD. | Adrianite | Ca12(Al4Mg3Si7)O32Cl6 |
9.AD.05 | Larnite | Ca2SiO4 |
9.AD.10 | Calcio-olivine | Ca2SiO4 |
9.AD.15 | Merwinite | Ca3Mg(SiO4)2 |
9.AD.20 | Bredigite | Ca7Mg(SiO4)4 |
9.AD.25 | Andradite | Ca3Fe3+2(SiO4)3 |
9.AD.25 | Almandine | Fe2+3Al2(SiO4)3 |
9.AD.25 | Calderite | Mn2+3Fe3+2(SiO4)3 |
9.AD.25 | Goldmanite | Ca3V3+2(SiO4)3 |
9.AD.25 | Grossular | Ca3Al2(SiO4)3 |
9.AD.25 | Henritermierite | Ca3Mn3+2(SiO4)2[◻(OH)4] |
9.AD.25 | Kimzeyite | Ca3Zr2(SiO4)(AlO4)2 |
9.AD.25 | Knorringite | Mg3Cr2(SiO4)3 |
9.AD.25 | Majorite | Mg3(MgSi)(SiO4)3 |
9.AD.25 | Morimotoite | Ca3(TiFe2+)(SiO4)3 |
9.AD.25 | Pyrope | Mg3Al2(SiO4)3 |
9.AD.25 | Schorlomite | Ca3Ti2(SiO4)(Fe3+O4)2 |
9.AD.25 | Uvarovite | Ca3Cr2(SiO4)3 |
9.AD.25 | Wadalite | (Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3 |
9.AD.25 va | Hydrougrandite | (Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2] |
9.AD.25 va | Yamatoite | (Mn2+,Ca)3(V3+,Al)2(SiO4)3 |
9.AD.25 | Holtstamite | Ca3Al2(SiO4)2[◻(OH)4] |
9.AD.25 | Khoharite | Mg3Fe3+2(SiO4)3 |
9.AD.25 | Kerimasite | Ca3Zr2(SiO4)(Fe3+O4)2 |
9.AD.25 | Toturite | Ca3Sn2(SiO4)(Fe3+O4)2 |
9.AD.25 | Momoiite | Mn2+3V3+2(SiO4)3 |
9.AD.25 | Eringaite | Ca3Sc2(SiO4)3 |
9.AD.25 | Irinarassite | Ca3Sn2(SiO4)(AlO4)2 |
9.AD.25 | Menzerite-(Y) | (Y2Ca)Mg2(SiO4)3 |
9.AD.25 | Eltyubyuite | Ca12Fe3+10Si4O32Cl6 |
9.AD.25 | Blythite | Mn2+3Mn3+2[SiO4]3 |
9.AD.25 | Skiagite | Fe2+3Fe3+2[SiO4]3 |
9.AD.25 | Hutcheonite | Ca3Ti2(SiO4)(AlO4)2 |
9.AD.25 | UM1984-37-SiO:CrMn | Mn2+3Cr3+2(SiO4)3 |
9.AD.25 | Rubinite | Ca3Ti3+2Si3O12 |
9.AD.25 | Nikmelnikovite | Ca12(Fe2+Fe3+3Al3◻)[SiO4]6[◻(OH)4]5◻4 |
9.AD.30 va | Auerlite | near Th(Si,P)O4 |
9.AD.30 | Coffinite | U(SiO4) · nH2O |
9.AD.30 | Hafnon | HfSiO4 |
9.AD.30 | Thorite | Th(SiO4) |
9.AD.30 | Zircon | Zr(SiO4) |
9.AD.30 | Stetindite-(Ce) | Ce(SiO4) |
9.AD.35 | Huttonite | ThSiO4 |
9.AD.35 | Tombarthite-(Y) | Y4(Si,H4)4O12-x(OH)4+2x |
9.AD.40 | Eulytine | Bi4(SiO4)3 |
9.AD.45 | Reidite | ZrSiO4 |
9.AD.55 | Jeffbenite | Mg3Al2Si3O12 |
Other Information
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 petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Spessartine
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https://www.mindat.org/min-3725.html
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References for Spessartine
Localities for Spessartine
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
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Rosina vein, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy