Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (4 online) Mindat Auctions

Garnet Group

Big Photo

Broken Hill, Yancowinna Co., New South Wales, Australia
© Greg Murray

Show Garnet Group Photos (178)
Formula:
X
 
3
Z
 
2
(SiO
 
4
)
 
3
 (X=Ca, Fe, etc· Z=Al, Cr, etc·)
System:Isometric
Name:Named from grantum (A pomegranate) for its resemblance to seeds of this fruit.
This page provides mineralogical data about Garnet Group.

Classification of Garnet Group

mindat.org URL:http://www.mindat.org/min-1651.html
Please feel free to link to this page.

Crystallography of Garnet Group

Crystal System:Isometric
Crystal Atlas:
Image Loading
Click on an icon to view
Garnet no.1 - Goldschmidt (1913-1926)
Garnet no.2 - Goldschmidt (1913-1926)
Garnet no.3 - Goldschmidt (1913-1926)
Garnet no.55 - Goldschmidt (1913-1926)
Garnet no.84 - Goldschmidt (1913-1926)

About Crystal Atlas

You may need to scroll this box using your mouse to view the full instructions.

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. You need Java to see these. You can download Java for free - click here to download Java

The 3d models and java code are kindly provided by www.smorf.nl. You can control the movement of the models by holding down the left mouse-button over the 3d model and moving your mouse. Keyboard controls are:

: default positions
t/T: decrease/increase transparency x/X: next/previous texture
b/B: next/previous background w: toggle wireframe
s: toggle sticks m: toggle miller indices
k: toggle crystallographic axes =/-: zoom in/out
r: stop/start rotation 1/2/3


Note: You will not be able to switch between different crystal models using the Opera 8.5x web browser due to a bug in Opera - you need to use either Firefox or Internet Explorer 6/7 or Opera 9.

Optical Data of Garnet Group

Type:Isotropic

Chemical Properties of Garnet Group

Formula:
X
 
3
Z
 
2
(SiO
 
4
)
 
3
 (X=Ca, Fe, etc· Z=Al, Cr, etc·)

Relationship of Garnet Group to other Species

Group Members:
Almandine
Fe
2+
3
Al
 
2
[SiO
 
4
]
 
3
Andradite
Ca
 
3
Fe
3+
2
[SiO
 
4
]
 
3
Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
[SiO
 
4
]
 
3
Goldmanite
Ca
 
3
(V
3+
 
,Al,Fe
3+
 
)
 
2
[SiO
 
4
]
 
3
Grossular
Ca
 
3
Al
 
2
[SiO
 
4
]
 
3
Hibschite
Ca
 
3
Al
 
2
[(OH)
 
6-1
|(SiO
 
4
)
 
1.5-2.5
]
Katoite
Ca
 
3
Al
 
2
[(OH)
 
8-6
|(SiO
 
4
)
 
1-1.5
]
Kimzeyite
Ca
 
3
(Zr,Ti)
 
2
[(Si,Al,Fe
3+
 
)O
 
4
]
 
3
Knorringite
Mg
 
3
Cr
 
2
[SiO
 
4
]
 
3
Majorite
Mg
 
3
(Fe
2+
 
,Si,Al)
 
2
[SiO
 
4
]
 
3
Morimotoite
Ca
 
3
(Ti,Fe
2+
 
,Fe
3+
 
)
 
2
[(Si,Fe
3+
 
)O
 
4
]
 
3
 (?)
Pyrope
Mg
 
3
Al
 
2
[SiO
 
4
]
 
3
Schorlomite
Ca
 
3
(Ti,Fe
3+
 
)
 
2
[(Si,Fe
3+
 
,Fe
2+
 
)O
 
4
]
 
3
Spessartine
Mn
2+
3
Al
 
2
[SiO
 
4
]
 
3
Uvarovite
Ca
 
3
Cr
 
2
[SiO
 
4
]
 
3
Minerals Related to Group:
:
NaCa
 
2
(Mg,Mn
2+
 
)
 
2
[AsO
 
4
]
 
3
:
Na
 
3
Li
 
3
[AlF
 
6
]
 
2
:
Ca
 
3
(Mn
3+
 
,Al)
 
2
[(OH)
 
4
|(SiO
 
4
)
 
2
]
:
(Ca,Na)
 
3
(Mn
2+
 
,Mg)
 
2
[AsO
 
4
]
 
3
:
(Ca,Na)
 
3
CaMn
2+
2
[VO
 
4
]
 
3
:
Ca
 
3
Zn
 
3
[TeO
 
6
]
 
2

Other Names for Garnet Group

Synonyms:
GaramantiousGarnetGrenat
German names:
Granat
Italian names:
Granato
Spanish names:
Granates
Traditional Chinese names:
石榴石

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Garnet Group

Reference List:Hutton, Colin Osborne (1962), Composition of some garnets in low-grade schists Royal Society of New Zealand Geology 1: 129-133.

Evans, B.W. (1965), Microprobe study of zoning in eclogite garnets: Geol. Soc. Amer. Abstract with Program: 54.

Sobolev, N.V., Jr., Kuznetsova, I.K., and Zyuzin, N.I. (1968) The petrology of grospydite xenoliths from the Zagadochnaya Kimberlite pipe in Yakutia. Journal of Petrology: 9: 253-280.

Dudley, P.P. (1969), Electron microprobe analyses of garnets in glaucophane schists and associated eclogites: American Mineralogist: 54: 1139-1150.

Sawatzky, G.A., Van Der Woude, F., and Morrish, A.H. (1969) Recoilness-fraction ratio for 57Fe in octahedral and tetrahedral sites of a spinel and a garnet. Physical Reviews: 183(2): 383-386.

Reid, A.M., Brown, R.W., DAwson, J.B., Whitfield, G.G., and Siebert, J.C. (1976) Garnet and pyroxene compositions in some diamondiferous eclogites. Contributions to Mineralogy and Petrology: 58: 203-220.

Green, T.H. (1977) Garnet in silicic liquids and its possible use as a P-T indicator. Contributions to Mineralogy and Petrology: 65: 59-67.

Kolesnik, Y.N., Nogteva, V.V., and Paukov, I.Y. (1977) The specific heat of pyrope at 13 to 300 K and the thermodynamic parameters of some natural varieties of garnet. Geochemistry International 1977: 126-133.

Newton, R.C., Charlu, T.V., and Kleppa, O.J. (1977) Thermochemistry of high pressure garnets and clinopyroxenes in the system CaO-MgO-Al2O3-SiO2. Geochimica et Cosmochimica Acta: 41: 369-377.

Schwartz, K.B., Nolet, D.A., and Burns, R.G. (1980) Mössbauer spectroscopy and crystal chemistry of natural Fe-Ti garnets. American Mineralogist: 65: 142-153.

Smith, B.K. (1982), Plastic deformation of garnets; mechanical behavior and associated microstructures, 208 p. University of California, Berkeley, Berkeley, California.

Cecchini A., Franzini M., Troysi M.(1988): Nuovi dati sulla microdurezza dei granati. Atti Soc.Tosc.Sc.Nat., Mem., Serie A, 95, 21-28.

Bell, D.R., Ihinger, P.D., and Rossman, G.R. (1995) Quantitative analysis of trace OH in garnet and pyroxenes. American Mineralogist: 80: 465-474.

Mukhopadhyay, B., Holdaway, M.J., and Koziol, A.M. (1997) A statistical model of the thermodynamic mixing properties of Ca-Mg-Fe2+ garnets. American Mineralogist: 82: 165-181.

Nakano, T. and Ishikawa, Y. (1997) Chemical zoning of pegmatite garnets from the Ishikawa and Yamonoo areas, northeastern Japan. Geochem. Journal: 31: 105-118.

Kolesov, B.A. and Geiger, C.A. (1998) Raman spectra of silicate garnets. Physics and Chemistry of Minerals: 25: 142-151.

Voegele, V., J.I. Ando, P. Cordier, & R.C. Liebermann (1998a), Plastic deformation of silicate garnets; , High-pressure experiments. Physics of the Earth and Planetary Interiors: 108: 305-318.

Voegele, V., P. Cordier, V. Sautter, T.G. Sharp, J.M. Lardeaux, & F.O. Marques (1998b), Plastic deformation of silicate garnets; II, Deformation microstructures in natural samples. Physics of the Earth and Planetary Interiors: 108: 319-338.

Bofa Ballaran, T., Carpenter, M.A., Geiger, C.A., and Kozol, A. (1999) Local structural heterogeneity in garnet solid solutions. Physics and Chemistry of Minerals: 26: 554-569.

Wang, L., E.J. Essene, & . Zhang (1999a), Mineral inclusions in pyrope crystals from Garnet Ridge, Arizona, USA; implications for processes in the upper mantle: Contributions to Mineralogy and Petrology: 135: 164-178.

Wang, Z., S. Ji, T.E. Rivers, D.R.M.E. Pattison, & R.F.E. Martin (1999b), Defromations of silicate garnets; brittle-ductile transition and its geological implications, Mineral-scale processes in metamorphic petrology; the Kretz volume.The Canadian Mineralogist: 37(2): 525-541.

Arredondo, E.H. and Rossman, G.R. (2002) Feasibility of determining the quantitative OH content of garnets with Raman spectroscopy. American Mineralogist: 87: 307-311.

Wang, L., Essene, E.J., and Zhang, Y. (2000) Direct observation of immiscibility in pyrope-almandine-grossular garnet. American Mineralogist: 85: 41-46.

Internet Links for Garnet Group

Search Engines:
  • Look for Garnet Group on Google
  • Look for Garnet Group images on Google
    • Mineral Dealers:
  • High-end worldwide specimens & outstanding customer service
  • Rare and Unusual minerals at Mineralogical Research Company
  • Top quality minerals from Kristalle of California
  • Lapis Mineral Magazin
  • Buy Fine Minerals from mineralsweb.com
  • Wendel Minerals - Auktion & Shop
  • Find Garnet Group on www.crystalclassics.co.uk
  • Buy from David K Joyce minerals
  • e-Rocks - Mineral Auctions and Sales
  • Fabre Minerals - search for Garnet Group specimens
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Wilensky Fine Minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Garnet Group

    Show Locality List (2995 Items)
    The 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.
    These maps work faster with Firefox!
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mineral Specimens available here.