Vote for your favorite mineral in #MinCup26! - Azurite vs. Smithsonite
It's carbonate-vs-carbonate to kick off Mineral Cup 2026 with copper-rich Azurite against zinc-rich Smithsonite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Almandine

A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About AlmandineHide

Formula:
Fe2+3Al2(SiO4)3
Colour:
Deep red, brownish red, red-violet, black
Lustre:
Vitreous, Resinous
Hardness:
7 - 7½
Specific Gravity:
4.318
Crystal System:
Isometric
Name:
Named in 1546 by Georgius Agricola [Georg Bauer] for Alabanda in Turkey, an ancient gem cutting center, presumably where almandine was fashioned into gemstones.
Almandine-Pyrope Series, Almandine-Spessartine Series.

Most common garnet. Occurs in metamorphic and pegmatitic rocks.




Unique IdentifiersHide

Mindat ID:
452
Long-form identifier:
mindat:1:1:452:5

IMA Classification of AlmandineHide

Approved, 'Grandfathered' (first described prior to 1959)

Classification of AlmandineHide

9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
51.4.3a.2

51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
16.17.1

16 : Silicates Containing Aluminum and other Metals
17 : Aluminosilicates of Fe

Mineral SymbolsHide

As of 2021 there are now IMAโ€“CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMAโ€“CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
AlmIMAโ€“CNMNCWarr, L.N. (2021). IMAโ€“CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
AlmKretz (1983)Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277โ€“279.
AlmSiivolam & 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
AlmWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185โ€“187 doi:10.2138/am.2010.3371
AlmThe 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 AlmandineHide

Vitreous, Resinous
Transparency:
Transparent, Translucent
Colour:
Deep red, brownish red, red-violet, black
Comment:
may be sectored
Streak:
White
Hardness:
7 - 7½ on Mohs scale
Tenacity:
Brittle
Parting:
On {110}
Fracture:
Sub-Conchoidal
Density:
4.318 g/cm3 (Measured)    4.313 g/cm3 (Calculated)

Optical Data of AlmandineHide

Type:
Isotropic
RI values:
n = 1.83
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Comments:
Anomalously biaxial.

Chemistry of AlmandineHide

Mindat Formula:
Fe2+3Al2(SiO4)3
Element Weights:
Element% weight
O38.572 %
Fe33.659 %
Si16.928 %
Al10.842 %

Calculated from ideal end-member formula.
O
Fe
Si
Al

Age distributionHide

Recorded ages:
Phanerozoic : 82.4 ยฑ 0.9 Ma to 0 Ma - based on 25 recorded ages.
Sample ages:
Sample IDRecorded ageGeologic TimeDating method
182.4 ยฑ 0.9 to MaLate/Upper CretaceousU-Pb from zircon

Chemical AnalysisHide

Oxide wt%:
Showing 12 of 25 analyses on this page.
 123456789101112
SiO236,94 %38.77 %39.91 %36.28 %38.18 %38.90 %38.03 %39.34 %39.33 %40.08 %35.7 %39.06 %
Al2O321,27 %21.05 %23.01 %24.95 %21.58 %21.19 %21.48 %22.54 %22.09 %22.33 %21.38 %22.06 %
FeO27,46 %25.55 %21.86 %21.32 %21.72 %23.12 %22.37 %21.18 %33.94 %23.23 %
MnO4,78 %0.52 %0.49 %16.94 %0.79 %0.30 %0.3 %0.31 %0.91 %0.69 %0.39 %0.11 %
MgO1,77 %3.72 %11.74 %0.12 %9.94 %7.39 %3.72 %8.57 %7.68 %9.66 %5.46 %7.23 %
CaO7,79 %10.9 %3.47 %0.28 %6.38 %8.02 %10.35 %6.69 %8.91 %7.42 %2.17 %8.31 %
TiO20.1 %0.01 %0.07 %0.07 %0.00 %0.04 %0.01 %
Cr2O30.01 %0.08 %0.07 %0.02 %0.02 %0.02 %
NiO.00 %
Na2O0.0 %
K2O
Fe2O31.15 %0.33 %
Sc2O3
REE2O3
V2O5
ZnO
Y2O3
FeOt25.80 %21.16 %
Total:96 %100.61 %101.63 %99.89 %98.61 %98.92 %99.68 %99.97 %100.24 %101.36 %99.1 %100.36 %
Empirical formulas:
Sample IDEmpirical Formula
13Alm55.5 Sps43.9
4Alm54,46Sps43,26
14alm59,97sps36,44
15(Fe2+2.104Mg0.397Mn0.114Ca0.382)2.994(Al1.985Fe3+0.015)2Si3.007O12
6(Fe2+1.459Mg0.860Mn0.020Ca0.663)2.994(Al1.926Fe3+0.074)2Si3O12
16(Fe2+2.00Mg0.38 Ca0.61) ฮฃ 2.99 (Al1.93Fe3+0.07) ฮฃ 2.00 Si3O12
7(Fe2+1.70Mg0.44Mn0.02Ca0.87) ฮฃ 3.03 Al1.99 Si2.99O12
17(Fe2+2.05 Mn2+0.06Mg0.28 Ca0.65) ฮฃ 3.04 (Al1.97Cr3+0.01) ฮฃ 1.98 Si2 ยท 97O12
8(Fe2+1.42 Mn2+0.02Mg0.79 Ca0.67) ฮฃ 2.90 (Al2.02Cr3+0.01) ฮฃ 2.03 Si2 ยท 99O12
18(Fe2+1.25Mg1.08 Ca0.64Mn0.03) ฮฃ 3.00Al1.99Si3.01O12
9(Fe2+1.35Mg0.87 Ca0.73Mn0.06) ฮฃ 3.00Al1.99Si3.00O12
19(Fe2+1.12Mg0.99 Ca0.91Mn0.02) ฮฃ 3.11Al2.03Si2.95O12
20(Fe2+1.36 Mg0.81 Ca0.78 Mn0.04) ฮฃ 2.99 (Al1.94 Fe3+0.06 Ti0.01) ฮฃ 2.01 Si3.00O12
10(Fe2+1.32Mg1.08 Ca0.60Mn0.04) ฮฃ3.04Al1.97Si3.00O12
21Alml54.33Pyr42.73Grs1.61Sps1.2
22(Fe2+1.90Ca0.86Mg0.16Mn0.08)ฮฃ3.00(Al1.90Fe3+0.10Cr3+0.01) ฮฃ 2.01 Si2.98O12
Sample references:
IDLocalityReferenceNotes
1Roadcut Rv 5, Kvineset, Fรธrde, Sunnfjord, Vestland, NorwayGarnet from a glaucophane bearing eclogite, giving alm59.3prp7.14grso21.68sps10.96adr0.92. The composition is fairly typical for the locality.
2Vรฅrdalsneset, Askvoll, Vestland, NorwaySample from foliated eclogite
3Sandvikhaugane, Flemsรธya-Skulรธya, Haram, ร…lesund, Mรธre og Romsdal, NorwaySample from an eclogitized gabbro
4Dassu, Braldu Valley, Shigar District, Gilgit-Baltistan, PakistanSample from pegmatite. The analysis is from the core.
5Danmarkshavn eclogites, Danmarkshavn, Northeast Greenland National Park, GreenlandThe analysis is from the rim of a pyrope/almandin/grossular garnet porphyroblast in a kyanite-eclogite matrix. EMPA analysis.
6Charakoma eclogite, Soufli, Evros, Eastern Macedonia and Thrace, GreeceEMPA analysis from the rim of a garnet porphyroblast in a kyanite-eclogite
7Kovalo eclogites, Kechros, Arriana, Rhodope, Eastern Macedonia and Thrace, GreeceEMPA analysis of the rim of a garnet from a retrogressed amphibolite facies eclogite. The garnet re-crystallised during decompression.
8Eissee eclogite, Timmelbach valley, Prรคgraten am GroรŸvenediger, Lienz District, Tyrol, AustriaEMPA analysis of an euhedral garnet in a kyanite-eclogite. This is the most Mg-rich composition found at the locality by Hoschek (2004)
9Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, AustriaEMPA analysis from the rim of a post-eclogite-facies garnet porphyroblast from a quartz-carbonate micaschist
10Obidim eclogite, Bansko Municipality, Blagoevgrad Province, BulgariaEMPA analysis ( State Geological Institute of Dionyz Stur in Bratislava).of the intermediate zone of a zoned eclogite garnet.
11Gassetts, Chester, Windsor County, Vermont, USAAlmandine from a garnet schist. EMPA analysis
12Kesandere valley eclogites, Bitlis Province, TurkeyEMPA analysis of primary eclogite garnet
13Yuno high mines, Shigar Valley, Shigar District, Gilgit-Baltistan, PakistanThe sample is from a pegmatite. Both core and rim of the sample was analyzed with no significant difference in composition.
14Steli Feldspar Quarry, Tveit, Iveland, Agder, NorwayThe sample is a homogenous garnet from a muscovite/garnet/monazite/columbite pegmatite. Sample analyzed with EMPA and LA-ICP-MS, and the results are the average of 6 analyzes.
15Charakoma eclogite, Soufli, Evros, Eastern Macedonia and Thrace, GreeceEMPA analysis from the core of a garnet porphyroblast in a kyanite-eclogite
16Kovalo eclogites, Kechros, Arriana, Rhodope, Eastern Macedonia and Thrace, GreeceEMPA analysis of the rim of a garnet porphyroblast in an eclogite
17Eissee eclogite, Timmelbach valley, Prรคgraten am GroรŸvenediger, Lienz District, Tyrol, AustriaEMPA analysis of an euhedral garnet in contact with omphacite (sample OM/10 - see omphacite) in a kyanite-eclogite.
18Steinsteg eclogite, Frosnitz valley, Matrei in Osttirol, Lienz District, Tyrol, AustriaEMPA analysis from the rim of a pink garnets of <3 mm in diameter from a kyanite-eclogite
19Nogva eclogite outcrop, Flemsรธya-Skulรธya, Haram, ร…lesund, Mรธre og Romsdal, NorwayEMPA analysis ( University of Massachusetts) of a garnet from a garnet-rich layer in an eclogite
20Hohl-Felsen eclogite, Wernersdorf, Wies, Deutschlandsberg District, Styria, AustriaEMPA analysis (University of Vienna) of an euhedral garnet crystal in an eclogite matrix.
21Kosavankovilpatti, Madurai District, Tamil Nadu, IndiaThis is the most Fe rich garnet from a total of 9 analyses from a granulite facies cordierite/garnet gneiss. EMPA analysis
22Eclogite outcrops, Shang Sumdo rรฉgion, Leh District, Ladakh, IndiaEMPA analysis of the rim of a garnet from an eclogite.

Crystallography of AlmandineHide

Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Ia3d
Cell Parameters:
a = 11.526 Å
Unit Cell V:
1,531.21 ร…ยณ (Calculated from Unit Cell)
Z:
8
Morphology:
Typically well-formed dodecahedra or trapezohedra, to 1 m; also in rounded grains and massive.

Crystal StructureHide

Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File    Best | x | y | z | a | b | c
Rotation
Stop | Start
Labels
Console Off | On | Grey | Yellow
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0007903AlmandineQuartieri S, Chaboy J, Merli M, Oberti R, Ungaretti L (1995) Local structural environment of calcium in garnets: A combined structure-refinement and XANES investigation Physics and Chemistry of Minerals 22 159-1691995metasedimentary rocks of the Ivrea-Verbano Zone, Italy0293
0007902AlmandineQuartieri S, Chaboy J, Merli M, Oberti R, Ungaretti L (1995) Local structural environment of calcium in garnets: A combined structure-refinement and XANES investigation Physics and Chemistry of Minerals 22 159-1691995metasedimentary rocks of the Ivrea-Verbano Zone, Italy0293
0007901AlmandineQuartieri S, Chaboy J, Merli M, Oberti R, Ungaretti L (1995) Local structural environment of calcium in garnets: A combined structure-refinement and XANES investigation Physics and Chemistry of Minerals 22 159-1691995metasedimentary rocks of the Ivrea-Verbano Zone, Italy0293
0000240AlmandineNovak G A, Gibbs G V (1971) The crystal chemistry of the silicate garnets sample Al American Mineralogist 56 791-8251971Emerald creek in Latah Co, Idaho, USA0293
0007863AlmandineWoodland A B, Ross C R (1994) A crystallographic and Mossbauer spectroscopy study of Fe3Al2Si3O12-Fe3Fe2Si3O12, (Almandine-"Skiagite") and Ca3Fe2Si3O12-Fe3Fe2Si3O12 (Andradite-"Skiagite") garnet solid solutions Physics and Chemistry of Minerals 21 117-13219940293
0007862AlmandineWoodland A B, Ross C R (1994) A crystallographic and Mossbauer spectroscopy study of Fe3Al2Si3O12-Fe3Fe2Si3O12, (Almandine-"Skiagite") and Ca3Fe2Si3O12-Fe3Fe2Si3O12 (Andradite-"Skiagite") garnet solid solutions Physics and Chemistry of Minerals 21 117-13219940293
0007861AlmandineWoodland A B, Ross C R (1994) A crystallographic and Mossbauer spectroscopy study of Fe3Al2Si3O12-Fe3Fe2Si3O12, (Almandine-"Skiagite") and Ca3Fe2Si3O12-Fe3Fe2Si3O12 (Andradite-"Skiagite") garnet solid solutions Physics and Chemistry of Minerals 21 117-13219940293
0007859AlmandineWoodland A B, Ross C R (1994) A crystallographic and Mossbauer spectroscopy study of Fe3Al2Si3O12-Fe3Fe2Si3O12, (Almandine-"Skiagite") and Ca3Fe2Si3O12-Fe3Fe2Si3O12 (Andradite-"Skiagite") garnet solid solutions Physics and Chemistry of Minerals 21 117-13219940293
0007693AlmandineGeiger C A, Armbruster T, Lager G A, Jiang K, Lottermoser W, Amthauer G (1992) A combined temperature dependent 57Fe Mossbauer and single crystal X-ray diffraction study of synthetic almandine: evidence for the Gol'danskii-Karyagin Effect Physics and Chemistry of Minerals 19 121-12619920293
0007692AlmandineGeiger C A, Armbruster T, Lager G A, Jiang K, Lottermoser W, Amthauer G (1992) A combined temperature dependent 57Fe Mossbauer and single crystal X-ray diffraction study of synthetic almandine: evidence for the Gol'danskii-Karyagin Effect Physics and Chemistry of Minerals 19 121-12619920293
0007691AlmandineGeiger C A, Armbruster T, Lager G A, Jiang K, Lottermoser W, Amthauer G (1992) A combined temperature dependent 57Fe Mossbauer and single crystal X-ray diffraction study of synthetic almandine: evidence for the Gol'danskii-Karyagin Effect Physics and Chemistry of Minerals 19 121-12619920293
0007690AlmandineGeiger C A, Armbruster T, Lager G A, Jiang K, Lottermoser W, Amthauer G (1992) A combined temperature dependent 57Fe Mossbauer and single crystal X-ray diffraction study of synthetic almandine: evidence for the Gol'danskii-Karyagin Effect Physics and Chemistry of Minerals 19 121-12619920293
0007689AlmandineGeiger C A, Armbruster T, Lager G A, Jiang K, Lottermoser W, Amthauer G (1992) A combined temperature dependent 57Fe Mossbauer and single crystal X-ray diffraction study of synthetic almandine: evidence for the Gol'danskii-Karyagin Effect Physics and Chemistry of Minerals 19 121-12619920293
0001469AlmandineArmbruster T, Geiger C A, Lager G A (1992) Single-crystal X-ray structure study of synthetic pyrope almandine garnets at 100 and 293 K American Mineralogist 77 512-52119920293
0001468AlmandineArmbruster T, Geiger C A, Lager G A (1992) Single-crystal X-ray structure study of synthetic pyrope almandine garnets at 100 and 293 K American Mineralogist 77 512-52119920293
0017914AlmandineHeritsch H (1933) Roentgenographische Untersuchungen an einem Granat aus der Lieserschlucht bei Spittal a. d. Drau (Kaernten) _cod_database_code 1010999 Zeitschrift fur Kristallographie 85 392-40319330293
0001464AlmandineArmbruster T, Geiger C A, Lager G A (1992) Single-crystal X-ray structure study of synthetic pyrope almandine garnets at 100 and 293 K American Mineralogist 77 512-52119920100
0001463AlmandineArmbruster T, Geiger C A, Lager G A (1992) Single-crystal X-ray structure study of synthetic pyrope almandine garnets at 100 and 293 K American Mineralogist 77 512-52119920100
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Loading XRD data...
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
2.569 ร…(100)
1.540 ร…(50)
2.873 ร…(40)
1.599 ร…(40)
4.04 ร…(30)
1.866 ร…(30)
1.660 ร…(30)
Comments:
Cavendish Township, Ontario, Canada. ICDD 9-427.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3a: Earthโ€™s earliest Hadean crust>4.50
8 : Mafic igneous rocks
Stage 4a: Earthโ€™s earliest continental crust>4.4-3.0
19 : Granitic intrusive rocks
Near-surface Processes
26 : Hadean detrital minerals
Stage 4b: Highly evolved igneous rocks>3.0
36 : Carbonatites, kimberlites, and related igneous rocks
Stage 5: Initiation of plate tectonics<3.5-2.5
38 : Ophiolites
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Geological Setting:
The most common garnet, typically in mica schists and gneisses, from regionally metamorphosed argillaceous sediments and pelites; also in contact metamorphic hornfels. In granites and eclogites; in sedimentary rocks; as a detrital mineral.

Type Occurrence of AlmandineHide

Synonyms of AlmandineHide

Other Language Names for AlmandineHide

Varieties of AlmandineHide

DhanrasiteTin-bearing garnets, in particular tin-bearing pyrope-almandine.

Originally reported from Dhanras Hills, Gaya District, Bihar, India.
Star GarnetA variety of almandine exhibiting a four-rayed or rarely six-rayed star due to oriented inclusions of rutile.
The Idaho state gemstone.

Relationship of Almandine to other SpeciesHide

Other Members of Garnet Group:
AndraditeCa3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'Blythite'Mn2+3Mn3+2[SiO4]3
CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
EringaiteCa3Sc2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
GoldmaniteCa3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
GrossularCa3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'Khoharite'Mg3Fe3+2(SiO4)3
KnorringiteMg3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
MajoriteMg3(MgSi)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
MomoiiteMn2+3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
PyropeMg3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
RubiniteCa3Ti3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'Skiagite'Fe2+3Fe3+2[SiO4]3
SpessartineMn2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
'UM1984-37-SiO:CrMn'Mn2+3Cr3+2(SiO4)3
UvaroviteCa3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
Forms a series with:

Common AssociatesHide

Associations Based on Photo Data:
376 photos of Almandine associated with QuartzSiO2
275 photos of Almandine associated with MuscoviteKAl2(AlSi3O10)(OH)2
211 photos of Almandine associated with AlbiteNa(AlSi3O8)
179 photos of Almandine associated with BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
164 photos of Almandine associated with StauroliteFe2+2Al9Si4O23(OH)
101 photos of Almandine associated with SchorlNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
62 photos of Almandine associated with MicroclineK(AlSi3O8)
53 photos of Almandine associated with KyaniteAl2(SiO4)O
40 photos of Almandine associated with Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
39 photos of Almandine associated with BerylBe3Al2(Si6O18)

Related Minerals - Strunz-mindat GroupingHide

9.AD.AdrianiteCa12(Al4Mg3Si7)O32Cl6Iso. 43m : I43d
9.AD.05LarniteCa2SiO4Mon. 2/m
9.AD.10Calcio-olivineCa2SiO4Orth. mmm(2/m2/m2/m)
9.AD.15MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
9.AD.20BredigiteCa7Mg(SiO4)4Orth. mm2 : Pnn2
9.AD.25MidbariteCa3Mg2(V5+2Si)O12Iso. m3m(4/m32/m) : Ia3d
9.AD.25Menzerite-(Y)(Y2Ca)Mg2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25UvaroviteCa3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25EltyubyuiteCa12Fe3+10Si4O32Cl6Iso. 43m : I43d
9.AD.25EringaiteCa3Sc2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25HenritermieriteCa3Mn3+2(SiO4)2[โ—ป(OH)4]Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.AD.25 va'Hydrougrandite'(Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2]Iso.
9.AD.25CalderiteMn2+3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25NikmelnikoviteCa12(Fe2+Fe3+3Al3โ—ป)[SiO4]6[โ—ป(OH)4]5โ—ป4Trig. 3 : R3
9.AD.25HutcheoniteCa3Ti2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25Wadalite(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3Iso. 43m : I43d
9.AD.25RubiniteCa3Ti3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25KerimasiteCa3Zr2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25HoltstamiteCa3Al2(SiO4)2[โ—ป(OH)4]Tet. 4/mmm(4/m2/m2/m) : I41/acd
9.AD.25SpessartineMn2+3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25ToturiteCa3Sn2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25KimzeyiteCa3Zr2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25'Khoharite'Mg3Fe3+2(SiO4)3
9.AD.25IrinarassiteCa3Sn2(SiO4)(AlO4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.25KnorringiteMg3Cr3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25GoldmaniteCa3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25'Blythite'Mn2+3Mn3+2[SiO4]3
9.AD.25'Skiagite'Fe2+3Fe3+2[SiO4]3
9.AD.25'UM1984-37-SiO:CrMn'Mn2+3Cr3+2(SiO4)3
9.AD.25 va'Yamatoite'(Mn2+,Ca)3(V3+,Al)2(SiO4)3Iso.
9.AD.25MomoiiteMn2+3V3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25GrossularCa3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25AndraditeCa3Fe3+2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25MorimotoiteCa3(TiFe2+)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25MajoriteMg3(MgSi)(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25PyropeMg3Al2(SiO4)3Iso. m3m(4/m32/m) : Ia3d
9.AD.25SchorlomiteCa3Ti2(SiO4)(Fe3+O4)2Iso. m3m(4/m32/m) : Ia3d
9.AD.30HafnonHf(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30ZirconZr(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30CoffiniteU(SiO4) ยท nH2OTet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30ThoriteTh(SiO4)Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.30 va'Auerlite'near Th(Si,P)O4
9.AD.30Stetindite-(Ce)Ce4+SiO4Tet. 4/mmm(4/m2/m2/m) : I41/amd
9.AD.35'Tombarthite-(Y)'Y4(Si,H4)4O12-x(OH)4+2xMon.
9.AD.35HuttoniteThSiO4Mon. 2/m
9.AD.40EulytineBi4(SiO4)3Iso. 43m : I43d
9.AD.45ReiditeZr(SiO4)Tet. 4/m : I41/a
9.AD.55JeffbeniteMg3Al2Si3O12Tet. 42m : I42d

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.
Industrial Uses:
Abrasive.

Internet Links for AlmandineHide

References for AlmandineHide

Reference List:

Localities for AlmandineHide

Showing 3,111 localities.

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.
Hide all sections | Show all sections

Locality ListShow

This section is currently hidden. Click the show button to view.
 
and/or  
Mindat.orgยฎ is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindatยฎ and mindat.orgยฎ are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are ยฉ OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833โ€“844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 1, 2026 06:50:45 Page updated: August 26, 2026 07:49:24
Go to top of page