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Grossular

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Survey map (303)
Occurrences (902)
Photos and Images (500)
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Pictures (495 Images total)

Views (File:

1487077999

): 6213, Rating: 9.82

Grossular
Himbeeroter Grossular mit gut sichtbarem schwarzen Andradit Kern; X = ca. 13 mm
Copyright: Andreas Schmid; Contribution: Andreas Schmid
Collection: Andreas Schmid
Location: Mexiko/Coahuila/Sierra Mojada, Municipio/Sierra de Cruces
Mineral: Grossular
Image: 1487077999
Rating: 9.82 (votes: 11)
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular

Himbeeroter Grossular mit gut sichtbarem schwarzen Andradit Kern; X = ca. 13 mm

Collection:

Andreas Schmid

Contribution: Andreas Schmid 2017-02-14

Locality: Sierra de Cruces / Sierra Mojada, Municipio / Coahuila / Mexiko

Views (File:

1218905537

): 4101, Rating: 9.57

Grossular
Größe: 11 x 11 mm; Fundort: Jeffrey Mine, Asbestos, Shipton Township, Richmond Co., Québec, Kanada
Copyright: Matteo Chinellato; Contribution: Hg
Location: Kanada/Québec/Estrie, Region/Les Sources, RCM/Val-des-Sources (Asbestos)/Jeffrey Mine
Mineral: Grossular
Image: 1218905537
Rating: 9.57 (votes: 7)
License: Usage for Mineralienatlas project only

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Grossular

Größe: 11 x 11 mm; Fundort: Jeffrey Mine, Asbestos, Shipton Township, Richmond Co., Québec, Kanada

Matteo Chinellato

Contribution: Hg 2008-08-16

Locality: Jeffrey Mine / Val-des-Sources (Asbestos) / Les Sources, RCM / Estrie, Region / Québec / Kanada

Views (File:

1293061608

): 4619, Rating: 9.5

Grossular
Größe: 3,98 mm; Fundort: Jeffrey Mine, Asbestos, Shipton Township, Richmond Co., Québec, Kanada
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Kanada/Québec/Estrie, Region/Les Sources, RCM/Val-des-Sources (Asbestos)/Jeffrey Mine
Mineral: Grossular
Image: 1293061608
Rating: 9.5 (votes: 6)
License: Usage for Mineralienatlas project only

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Grossular

Größe: 3,98 mm; Fundort: Jeffrey Mine, Asbestos, Shipton Township, Richmond Co., Québec, Kanada

Collection:

Domenico Preite

Matteo Chinellato

Contribution: Hg 2010-12-23

Locality: Jeffrey Mine / Val-des-Sources (Asbestos) / Les Sources, RCM / Estrie, Region / Québec / Kanada

Views (File:

1284625741

): 3851, Rating: 9.5

Grossular
Größe: 3,27 mm; Fundort: Bellecombe, Aostatal, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Aostatal (Valle d'Aosta), Region/Châtillon/Bellecombe
Mineral: Grossular
Image: 1284625741
Rating: 9.5 (votes: 4)
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Grossular

Größe: 3,27 mm; Fundort: Bellecombe, Aostatal, Italien

Collection:

Domenico Preite

Matteo Chinellato

Contribution: Hg 2010-09-16

Locality: Bellecombe / Châtillon / Aostatal (Valle d'Aosta), Region / Italien

Views (File:

1319361893

): 5091, Rating: 9.75

Grossular
Größe: 1,8 mm; Fundort: Bellecombe, Aostatal, Italien
Copyright: Enrico Bonacina; Contribution: Hg
Location: Italien/Aostatal (Valle d'Aosta), Region/Châtillon/Bellecombe
Mineral: Grossular
Image: 1319361893
Rating: 9.75 (votes: 4)
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Grossular

Größe: 1,8 mm; Fundort: Bellecombe, Aostatal, Italien

Enrico Bonacina

Contribution: Hg 2011-10-23

Locality: Bellecombe / Châtillon / Aostatal (Valle d'Aosta), Region / Italien

Views (File:

1229070467

): 7438

Grossular
Größe: 5,8 mm; Fundort: Mapimi, Durango, Mexiko
Copyright: Matteo Chinellato; Contribution: Hg
Location: Mexiko/Durango/Mapimí, Municipio
Mineral: Grossular
Image: 1229070467
Rating: 10 (votes: 3)
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Grossular

Größe: 5,8 mm; Fundort: Mapimi, Durango, Mexiko

Matteo Chinellato

Contribution: Hg 2008-12-12

Locality: Mapimí, Municipio / Durango / Mexiko

More images

You find additional specimen at the Geolitho Museum

Collectors Summary

Color

braun, farblos, grün, grau, gelb

Streak color

bräunlich weiß

Hardness (Mohs)

6.5 - 7.5

Solubility

+ HF, - Säuren

Crystal System

kubisch, Ia3d

Additional information / Summary

Siehe auch Mineralienportrait: Granat - Grossular

Chemism

Chemical formula

{Ca₃}[Al₂](Si₃)O₁₂

Chemical composition

Aluminium, Calcium, Silicium, Sauerstoff

Unit weight: 450.4480264 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Ca₃}[Al₂](Si₃)O₁₂

Element	Symbol	Weight%	Atoms	Atoms%	Atom weight (u)	Sum weight (u)
Oxygen	O	42.62	12	60.00	15.9994300	191.9931600
Aluminium	Al	11.98	2	10.00	26.9815382	53.9630764
Silicon	Si	18.71	3	15.00	28.0855300	84.2565900
Calcium	Ca	26.69	3	15.00	40.0784000	120.2352000

Search for minerals with similar chemistry

Analysis wt%

SiO₂ : 40.06, Al₂O₃ : 19.89, Fe₂O₃ : 2.23, MgO : 1.11, CaO : 36.37 (Ref: Zeitschrift ür Kristallographie 66)

Strunz 9th edition incl. updates

9.AD.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
D: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] und gewöhnlich größerer Koordination
25:Granat-Gruppe

Lapis Classification

VIII/A.08-070

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
8: Kationen in kubischer und oktaedrischer Koordination [8+6]; Granat-Gruppe

Classification by Hölzel

9.AC.250

9: SILICATES
A: Nesosilicates
C: Garnet-Group
2: Ugrandites - 8-coord. Ca, Rare Earth Elements; Grossular-Group - 6-coord. Al

Dana 8th edition

51.04.03b.02

51: Nesosilicate Minerals
04: Nesosilicates Nesosilicate Insular SiO4 Groups Only with cations in [6] and >[6] coordination
03b: Garnet group (Ugrandite series)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

Garnet supergroup ⇒ Silicate garnets; Garnet group (Z charge 12)

Optical Properties

Color	braun, farblos, grün, grau, gelb
Streak color	bräunlich weiß
Diaphaneity (Transparency)	transparent bis teilweise durchscheinend
RI value α / ω / n	1.737
Ri mean	1.737
2V angle	Isotropisch

Optical Data Luminescence

Color LW-UV (365nm)	rot
LW-UV Intensity	schwach
MW-UV (320nm)	rot
MW-UV Intensity	schwach
Color SW-UV (254nm)	rot
SW-UV Intensity	extrem schwach
LW-UV Other Colors	violettrot, rosa, lachsrosa
MW-UV Other Colors	violettrot
SW-UV Other Colors	orange, dunkelorange gelbbraun
Most Common Activator	Mn²⁺
Other Activators	Mn³⁺, Cr³⁺, V²⁺, Ln³⁺ (seltene Erden)
Afterglow (Persistant Luminescence)	Mit bloßem Auge konnte keine Phosphoreszenz festgestellt werden.
Thermoluminescence	vorhanden

Image ⇒ Luminescence ⇒ excitation ⇒ UV longwave ~365nm (3 Images total)

Views (File:

1647638245

): 265

Grossular unter 365nm Anregung

Grossular in Matrix: dominant tiefrote Lumineszenz (bei ca 650nm, Mn3+) unter UV Anregung 365 nm (BB ca. 8cm, Sierra de Cruces, Mexico).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Mexiko/Coahuila/Sierra Mojada, Municipio/Sierra de Cruces
Mineral: Grossular
Image: 1647638245
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular unter 365nm Anregung

Grossular in Matrix: dominant tiefrote Lumineszenz (bei ca 650nm, Mn3+) unter UV Anregung 365 nm (BB ca. 8cm, Sierra de Cruces, Mexico).

Collection:

Lynx

Contribution: Lynx 2022-03-18

Locality: Sierra de Cruces / Sierra Mojada, Municipio / Coahuila / Mexiko

Views (File:

1647637710

): 200

Grossular unter 365nm Anregung

Grossular: dominant tiefrote Lumineszenz (bei ca 650nm, Mn³⁺) unter UV Anregung 365 nm (BB 18 mm, Sierra de Cruces, Mexico).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Mexiko/Coahuila/Sierra Mojada, Municipio/Sierra de Cruces
Mineral: Grossular
Image: 1647637710
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular unter 365nm Anregung

Grossular: dominant tiefrote Lumineszenz (bei ca 650nm, Mn³⁺) unter UV Anregung 365 nm (BB 18 mm, Sierra de Cruces, Mexico).

Collection:

Lynx

Contribution: Lynx 2022-03-18

Locality: Sierra de Cruces / Sierra Mojada, Municipio / Coahuila / Mexiko

Views (File:

1647119832

): 122

Grossular unter UV

Grossular: dominant tiefrote Lumineszenz (Mn³⁺ bei ca 635nm) unter UV 365 nm Anregung (BB 12 mm, Sierra de Cruces, Mexico).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Mexiko/Coahuila/Sierra Mojada, Municipio/Sierra de Cruces
Mineral: Grossular
Image: 1647119832
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular unter UV

Grossular: dominant tiefrote Lumineszenz (Mn³⁺ bei ca 635nm) unter UV 365 nm Anregung (BB 12 mm, Sierra de Cruces, Mexico).

Collection:

Lynx

Contribution: Lynx 2022-03-12

Locality: Sierra de Cruces / Sierra Mojada, Municipio / Coahuila / Mexiko

Image ⇒ Luminescence ⇒ excitation ⇒ others (3 Images total)

Views (File:

1666793888

): 64

Grossular

Grossular, luminesziert orange unter 405 nm Anregung. Vgl.: Gaft, M., et al. (2022). Zero-phonon Mn²⁺ luminescence in natural grossular Ca₃Al₂ (SiO₄) ₃. Journal of Luminescence. (BB 42mm; Stifle Claim, El Dorado Co. USA).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: USA/Kalifornien (California)/El Dorado Co./Georgetown District
Mineral: Grossular
Image: 1666793888
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular

Collection:

Lynx

Contribution: Lynx 2022-10-26

Locality: Georgetown District / El Dorado Co. / Kalifornien (California) / USA

'Tsavorit' - Cr, V haltiger Grossular: Emission bei 405nm Anregung

Views (File:

1664475845

): 89

'Tsavorit' - Cr, V haltiger Grossular: Emission bei 405nm Anregung

Grossular ('Tsavorit'): unter 405nm Anregung leuchten diese Tsavorite durch einen Mn²⁺ Beitrag orange Merelani, Tansania. BB ca 30 mm.
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Tansania/Manyara, Region/Simanjiro, Distrikt/Merelani (Mererani)
Mineral: Grossular, Tsavorite
Image: 1664475845
License: Usage for Mineralienatlas project only

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'Tsavorit' - Cr, V haltiger Grossular: Emission bei 405nm Anregung

Analysed with fluorescence spectroscopy

Grossular ('Tsavorit'): unter 405nm Anregung leuchten diese Tsavorite durch einen Mn²⁺ Beitrag orange Merelani, Tansania. BB ca 30 mm.

Collection:

Lynx

Contribution: Lynx 2022-09-29

Locality: Merelani (Mererani) / Simanjiro, Distrikt / Manyara, Region / Tansania

Views (File:

1647637529

): 121

Grossular unter 405nm Anregung

Grossular: orangerote Lumineszenz (bei ca 600nm, Mn²⁺) unter Anregung mit einem Diodenlaser bei 405 nm (BB 12 mm, Sierra de Cruces, Mexico).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: Mexiko/Coahuila/Sierra Mojada, Municipio/Sierra de Cruces
Mineral: Grossular
Image: 1647637529
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular unter 405nm Anregung

Grossular: orangerote Lumineszenz (bei ca 600nm, Mn²⁺) unter Anregung mit einem Diodenlaser bei 405 nm (BB 12 mm, Sierra de Cruces, Mexico).

Collection:

Lynx

Contribution: Lynx 2022-03-18

Locality: Sierra de Cruces / Sierra Mojada, Municipio / Coahuila / Mexiko

Image ⇒ Analyses data ⇒ Fluorescence spectral analysis (5 Images total)

Topas, Grossular und Beryl: Emissionspektren bei grüner Anregung (520nm)

Views (File:

1667851559

): 124

Topas, Grossular und Beryl: Emissionspektren bei grüner Anregung (520nm)
Lumineszenz von Mineralien muss keineswegs im UV angeregt werden. Mit einem grünen Laser bei 515nm wird hier Cr³⁺ in Topas (Schneckenstein) und Mn³⁺ in Grossular (Sierra de Cruces) bzw. Beryll (Wah Wah Mountains) angeregt.
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Mineral: Beryl, Grossular, Red Beryl, Topaz
Image: 1667851559
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Topas, Grossular und Beryl: Emissionspektren bei grüner Anregung (520nm)

Lumineszenz von Mineralien muss keineswegs im UV angeregt werden. Mit einem grünen Laser bei 515nm wird hier Cr³⁺ in Topas (Schneckenstein) und Mn³⁺ in Grossular (Sierra de Cr...

Collection:

Lynx

Contribution: Lynx 2022-11-07

Views (File:

1666797231

): 58

Emissionsspektren
Emissionsspektren von Grossular (exc. 405nm) vom Stifle Claim, El Dorado Co., CA, USA. Vgl. hierzu Gaft, M., et al. (2022). Zero-phonon Mn²⁺ luminescence in natural grossular Ca₃Al₂ (SiO₄)₃. Journal of Luminescence.
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Location: USA/Kalifornien (California)/El Dorado Co./Georgetown District
Mineral: Grossular
Image: 1666797231
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Emissionsspektren

Emissionsspektren von Grossular (exc. 405nm) vom Stifle Claim, El Dorado Co., CA, USA. Vgl. hierzu Gaft, M., et al. (2022). Zero-phonon Mn²⁺ luminescence in natural grossular Ca₃Al₂ (SiO₄)₃. Journa...

Collection:

Lynx

Contribution: Lynx 2022-10-26

Locality: Georgetown District / El Dorado Co. / Kalifornien (California) / USA

Views (File:

1664405060

): 56

Grossular: Emissionsspektren

Grüner Tsavorit (Merelani, Tansania), angeregt mit blauem Licht (450nm). die Signatur von Cr³⁺ ist deutlich zu erkennen. Es zeigt sich kein Hinweis auf Mn³⁺ (fehlende Banden um 630 nm).
Copyright: Lynx; Contribution: Lynx
Collection: Lynx
Mineral: Grossular, Tsavorite
Image: 1664405060
License: Usage for Mineralienatlas project only

Original size - Additional info - Insert picture into forum - Discussion

Grossular: Emissionsspektren

Grüner Tsavorit (Merelani, Tansania), angeregt mit blauem Licht (450nm). die Signatur von Cr³⁺ ist deutlich zu erkennen. Es zeigt sich kein Hinweis auf Mn³⁺ (fehlende Banden u...

Collection:

Lynx

Contribution: Lynx 2022-09-29

More images

Crystallography

Crystal System	kubisch
Class (H-M)	m3m
Space Group number	230
Space Group	Ia3d
Cell parameters a (Å)	11.855
Cell parameters b (Å)	-
Cell parameters c (Å)	-
Cell parameters a/b or c/a	1
Cell parameters c/b	-
Cell parameters α	90°
Cell parameters β	90°
Cell parameters γ	90°
Z	8
Volumne (Å³)	1666.114
X-Ray Powder Diffraction	2.964(40), 2.651(100), 2.420(20), 2.325(20), 2.164(10), 1.923(20), 1.644(20), 1.584(30)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)	6.5 - 7.5
VHN (Hardness Vickers)	1110 (ungefähre Angabe abgeleitet aus der Mohshärte)
Density (g/cm³)	3.42 - 3.72 / Durchschnittlich = 3.57
	3.591 ( ρ calc. Mineralienatlas )
Instability	+ HF, - Säuren

(Co-)Type locality

(Co-)Type locality	Russland /Ferner Osten, Föderationskreis /Sacha (Sakha, Jakutien, Якутия), Republik /Wiljui-Becken (Wilui; Vilyui; Vilui)/Chernyshevsk
Type material	Mineralogische Sammlung der TU Bergakademie Freiberg
Collection number of type material	100201 / K 93

Preface

Name from	dem lateinischen Wort für Stachelbeere (ribes grossularia) in Ableitung der häufig grünen Farbe
Author (Name, Year)	Werner, 1811

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 303.

Grew, E.S., Locock, A.J., Mills, S.J., Galuskina, I.O., Galuskin, E.V., Halenius, U., 2012; Nomenclature of the garnet supergroup. American Mineralogist; preprint December 2012 - [Formel]

Sytle M. Antao: Is near-endmember birefringent grossular non-cubic? New evidence from synchrotron diffraction. Can Mineral Vol. 51, Nr. 5 (2013) S. 771-784.

IMA group assignments

Varieties

Chromian Grossular	chromhaltige Grossular-Varietät; kein Uwarowit
Hessonite	Hessonit = orangroter, rotbrauner bis zimtfarbener Grossular
Hibschite	Varietät von Grossular
Hydrogrossular
Tsavorite	chromhaltige Varietät von Grossular

Other languages

Dutch	Grossulaar
French	Grossulair
French	Grossulaire
German	Grossular
English	Grossular
Italian	Grossularia
Hungarian	Grosszulár
Spanish	Grosularia
Lithuanian	Grosuliaras
Russian	Гроссуляр
Ukrainian	Гросуляр
Japanese	灰礬柘榴石

Alternative Name

German	Colophonit
Spanish	Colophonita
	Colophonite
German	Ernit
Spanish	Ernita
	Ernite
English	Essonite
	Garnet Jade
	Gooseberry-Garnet
	Grossular Garnet
German	Grossularit
Spanish	Grossularita
English	Grossularite
	Kalkthongranat
	Kanelstein
German	Kolophonit
German	Olyntholit
Spanish	Olyntholita
	Olyntholite
	Pechgranat
	Plazolith
	Romanzovite
German	Rumanzowit
German	Rumjanzowit
	South African Jade
German	Tellemarkit
Spanish	Tellemarkita
	Tellemarkite
Italian	Viluita
Italian	Wilouita
French	Wilouite
	Wiluite (of Severgin)
Simplified Chinese	绿榴石贵
	钙铝榴石
Simplified Chinese	钙铝石榴子石

CNMNC symbol

Symbol

Grs

Automatic Links to external internet sources (Responsibility is with the operator)

German pages	DeWikiPedia - search for: Grossular Google-Bilder-Suche - search for: Grossular Mineralienatlas.de (Forum) - search for: Grossular
English pages	RRUFF - References and PDF downloads - search for: Grossular American-Mineralogist-Crystal-Structure-Database - search for: Grossular Mindat - search for: Grossular Webmineral - search for: Grossular Handbook-of-Mineralogy - search for: Grossular RRUFF - Raman, XRD and other mineral data - search for: Grossular Strahlen.org - search for: Grossular
Russian pages	Webmineral.ru - search for: Гроссуляр

Mineral Dealer

German pages

hausen - Mineral Wholesale - search for: Grossular
Crystal-Treasure.com - search for: Grossular
Bosse - Minerals and accessories - search for: Grossular
Edelsteine Neuburg - Gundolf Fischer - search for: Grossular
Geolitho Marketplace, by and for collectors - search for: Grossular

Locations with GPS information

IDs

GUSID (Global unique identifier short form)	H6Nq0-3aNEO-sL8_IHt8UA
GUID (Global unique identifier)	D36AA31F-DAED-4334-BEB0-BF3F207B7C50
Database ID	1461