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Almandine

Pictures (315 Images total)

Almandin
Views (File:
1298064097
): 2040
Almandin
Rotbrauner Kristall, BB = 9,2 mm. Fundort : Scheib(NÖ), Kirchschlag, Zwettl, Waldviertel, Niederösterreich, Österreich.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A021170, Donator: Erwin Loeffler
Location: Österreich/Niederösterreich/Zwettl, Bezirk/Kirchschlag/Scheib/Steinbruch Scheib
Mineral: Almandine
Encyclopedia: Deltoidalikositetraeder (Ikositetraeder)
Image: 1298064097
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Almandin (SNr: A021170)  D

Rotbrauner Kristall, BB = 9,2 mm. Fundort : Scheib(NÖ), Kirchschlag, Zwettl, Waldviertel, Niederösterreich, Österreich.
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2011-02-18
Locality: Steinbruch Scheib / Scheib / Kirchschlag / Zwettl, Bezirk / Niederösterreich / Österreich
Almandin
Views (File:
1563102492
): 6708
Almandin
Etwa 12 mm großer scharfkantiger Almandin-Deltoidikositetraeder auf rhyolithischer Matrix vom Garnet Hill in Nevada.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Alma-4-1-1
Location: USA/Nevada/White Pine County/Robinson District/Ely/Garnet Hill
Mineral: Almandine
Image: 1563102492
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Almandin (SNr: SyS-Alma-4-1-1)

Etwa 12 mm großer scharfkantiger Almandin-Deltoidikositetraeder auf rhyolithischer Matrix vom Garnet Hill in Nevada.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2019-07-14
Locality: Garnet Hill / Ely / Robinson District / White Pine County / Nevada / USA
Almandine
Views (File:
1603955721
): 224
Almandine
Large and finished all around, Almandine garnet crystal, from River Valley Garnet Mine, Dana Township, Sudbury District, Ontario, Canada; Dimensions: 57 mm x 56 mm x 48 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Kanada/Ontario/Nipissing District/West Nipissing, Municipality/River Valley Garnet Mine (Industrial Garnet Mine)
Mineral: Almandine
Image: 1603955721
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Almandine  D

Large and finished all around, Almandine garnet crystal, from River Valley Garnet Mine, Dana Township, Sudbury District, Ontario, Canada; Dimensions: 57 mm x 56 mm x 48 mm
Copyright: pegmatite
Contribution: pegmatite 2020-10-29
Locality: River Valley Garnet Mine (Industrial Garnet Mine) / West Nipissing, Municipality / Nipissing District / Ontario / Kanada
Almandin
Views (File:
1716137464
): 404
Almandin
Etwa 80 mm x 57 mm große Glimmerschieferstufe mit Almandinkristallen von der Goldkoppe, Olmütz in Tschechien.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Alma-5-1-15
Location: Tschechien/Olmütz (Olomoucký kraj)/Freiwaldau (Okres Jesenik)/Goldkoppe (Zlaty Chlum)
Mineral: Almandine
Rock: mica schist
Image: 1716137464
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Almandin (SNr: SyS-Alma-5-1-15)

Etwa 80 mm x 57 mm große Glimmerschieferstufe mit Almandinkristallen von der Goldkoppe, Olmütz in Tschechien.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2024-05-19
Locality: Goldkoppe (Zlaty Chlum) / Freiwaldau (Okres Jesenik) / Olmütz (Olomoucký kraj) / Tschechien
Almandin
Views (File:
1350943647
): 16764, Rating: 9.3
Almandin
Bildbreite: 1,4 mm; Deutschland/Rheinland-Pfalz/Vulkaneifel-Kreis/Daun/Üdersdorf/Emmelberg
Copyright: loparit; Contribution: loparit
Collection: loparit, Collection number: EM 3243
Location: Deutschland/Rheinland-Pfalz/Vulkaneifel, Landkreis/Daun/Üdersdorf/Emmelberg
Mineral: Almandine
Image: 1350943647
Rating: 9.3 (votes: 10)
License: Usage for Mineralienatlas project only
Almandin (SNr: EM 3243)

Bildbreite: 1,4 mm; Deutschland/Rheinland-Pfalz/Vulkaneifel-Kreis/Daun/Üdersdorf/Emmelberg
Collection: loparit
Copyright: loparit
Contribution: loparit 2012-10-22
Locality: Emmelberg / Üdersdorf / Daun / Vulkaneifel, Landkreis / Rheinland-Pfalz / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color violett, rot, braunrot, (selten) schwarz
Streak color weiß
Hardness (Mohs) 6.5 - 7.5
Solubility +++ HF
Crystal System kubisch, Ia3d

Additional information / Summary

Siehe auch Mineralienportrait: Granat - Almandin

Chemism

Chemical formula

{Fe2+3}[Al2](Si3)O12

Chemical composition

Aluminium, Eisen, Silicium, Sauerstoff

Unit weight: 497.7484264 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Fe3}[Al2](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

38.57

12

60.00

15.9994300

191.9931600
Aluminium

Al

10.84

2

10.00

26.9815382

53.9630764
Silicon

Si

16.93

3

15.00

28.0855300

84.2565900
Iron

Fe

33.66

3

15.00

55.8452000

167.5356000

Analysis wt%

SiO2 : 35.96, Al2O3 : 21.79, Fe2O3 : 0.60, FeO : 33.05, MnO : 1.67, MgO : 3.27, CaO : 1.32 (Ref: Journal of Petrology 62)

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.08-020

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

Classification by Hölzel

9.AC.110

9: SILICATES
A: Nesosilicates
C: Garnet-Group
1: Pyralspites - 8-coord. Mg, Fe(2+), Mn(2+); Pyrope - Spessartine-Group

Dana 8th edition

51.04.03a.02

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

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

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

Optical Properties

Color

violett, rot, braunrot, (selten) schwarz

Streak color

weiß

RI value α / ω / n

1.830

Ri mean

1.830

2V angle

Isotropisch

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell parameters a (Å)

11.526

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

Volume (ų)

1531.214

X-Ray Powder Diffraction

2.893(30),
2.586(100),
2.361(20),
2.112(20),
1.876(20),
1.604(30),
1.546(30),
1.445(10)
XRD chart Almandine

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)

1450 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.2

4.318 ( ρ calc. Mineralienatlas )

Instability

+++ HF

Chemical Properties and Tests

schwach magnetisch

(Co-)Type locality

(Co-)Type locality

Türkei/Ägäisregion/Aydin, Provinz/Çine, Landkreis/Doğanyurt/Alabanda

Preface

Name from

dem antiken Bearbeitungsort Alabanda in Kleinasien

Author (Name, Year)

Agricola, 1546

References

American Mineralogist 77 (1992), 399.

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]

IMA group assignments

 
Garnet supergroup
{X3}[Y2](Z3)φ12
 
 

 
 
Silicate garnets; Garnet group (Z charge 12)
 
 
 

 
 
 
Almandine
{Fe2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
Andradite
{Ca3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
Calderite
{Mn2+3}[Fe3+2](Si3)O12
kubisch
Ia3d

 
 
 
Eringaite
{Ca3}[Sc2](Si3)O12
kubisch
Ia3d

 
 
 
Goldmanite
{Ca3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
Grossular
{Ca3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
Hutcheonite
{Ca3}[Ti2](SiAl2)O12
kubisch
Ia3d

 
 
 
Knorringite
{Mg3}[Cr3+2](Si3)O12
kubisch
Ia3d

 
 
 
Majorite
{Mg3}[MgSi](Si3)O12
kubisch
 

 
 
 
Menzerite-(Y)
{Y2Ca}[Mg2](Si3)O12
kubisch
Ia3d

 
 
 
Momoiite
{Mn2+3}[V3+2](Si3)O12
kubisch
Ia3d

 
 
 
Morimotoite
{Ca3}[TiFe2+](Si3)O12
kubisch
Ia3d

 
 
 
Pyrope
{Mg3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
Spessartine
{Mn2+3}[Al2](Si3)O12
kubisch
Ia3d

 
 
 
Uvarovite
{Ca3}[Cr3+2](Si3)O12
kubisch
Ia3d

Refresh list

Actuality: 19. Apr 2025 - 12:55:06

Other languages

Dutch

Almandien

German

Almandin

French

Almandin

Lithuanian

Almandinas

English

Almandine

Spanish

Almandino

Polish

Almandyn

Serbian (Cyrillic Script)

Алмандин

Russian

Альмандин

Japanese

鉄礬柘榴石

Traditional Chinese

鐵鋁榴石

Simplified Chinese

铁铝榴石

Alternative Name

Adelaide ruby

Adelaide-Rubin

Latin

Alabandicus (of Pliny)

Alabandine Ruby

Alamandine

Almandine Garnet

Almandit

Almandita

Almandite

English

Carbuncle

Latin

Carbunculus

Felsenrubin

German

Karfunkel

Oriental Garnet

Traditional Chinese

貴榴石

Simplified Chinese

贵榴石

CNMNC symbol

Symbol

Alm

Rock part of

 
Rocks

 
 
igneous rocks and sediments

 
 
 
crystalline igneous rocks

 
 
 
 
normal crystalline rocks

 
 
 
 
 
coarse-grained crystalline rocks

 
 
 
 
 
 
anorthositic-rock

 
 
 
 
 
 
 
anorthosite  

 
 
 
 
 
fine-grained crystalline rocks

 
 
 
 
 
 
dacitic-rock

 
 
 
 
 
 
 
dacite  

 
 
metamorphic rocks and metasediments

 
 
 
high-grade metamorphic rock

 
 
 
 
high P/T metamorphic rock

 
 
 
 
 
eclogite  

 
 
 
rock names based on modal composition of metamorphic rocks

 
 
 
 
ferromagnesian metamorphic rocks

 
 
 
 
 
eclogite  

Refresh list | View legend

Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 19. Apr 2025 - 12:55:06

Locations with GPS information

IDs

GUSID (Global unique identifier short form) de_ducmbz0GCKNBZzuuEVA
GUID (Global unique identifier) B9DDEF75-9BC9-41CF-8228-D059CEEB8454
Database ID 71