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Goldmanite

Pictures (6 Images total)

Goldmanit
Views (Image: 1229772741): 4282, Rating: 9
Goldmanit

Größe: 7,05 mm; Fundort: Bellecombe, Aostatal, Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-12-20
Locality: Bellecombe / Châtillon / Aostatal (Valle d'Aosta), Region / Italien
Goldmanit
Views (Image: 1179774444): 2540
Goldmanit

FO: Mine Molinello, Gambatesa Val, Graveglia, Italien; Größe: 5x4 mm

Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2007-05-21
Locality: Miniera di Molinello / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Goldmanit
Views (Image: 1579960327): 453
Goldmanit

tiefgrüne Goldmanitkristalle eingewachsen im Skarn mit Pyrit von Rybnicek bei Pezinok/Slowakei; Bildbreite 3,2 mm

Collection: Pyrop
Copyright: Haubi
Contribution: Haubi 2020-01-25
Locality: Rybníček / Pezinok / Pezinok, Okres / Bratislavský kraj / Slowakei
Goldmanit
Views (Image: 1580399151): 365
Goldmanit

Gambatesa Mine Val Graveglia; Bildbreite 1,2 mm

Collection: Ulrich Hansper
Copyright: Ulrich Hansper
Contribution: Ulrich Hansper 2020-01-30
Locality: Miniera Valgraveglia (Gambatesa) / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Goldmanit
Views (Image: 1580399240): 368
Goldmanit

Gambatesa Mine Val Graveglia; Bildbreite 1,2 mm

Collection: Ulrich Hansper
Copyright: Ulrich Hansper
Contribution: Ulrich Hansper 2020-01-30
Locality: Miniera Valgraveglia (Gambatesa) / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Goldmanit
Views (Image: 1608468774): 152
Goldmanit

Bildbreite: 4 mm; Fundort: Rybnicek, Pezinok, Slowakei

Collection: Martin Stevko
Copyright: Martin Stevko
Contribution: slugslayer 2020-12-20
Locality: Rybníček / Pezinok / Pezinok, Okres / Bratislavský kraj / Slowakei

Collectors Summary

Color dunkelgrün, bräunlich grün
Streak color weiß
Hardness (Mohs) 6.5
Solubility +++ mixt. H2SO4-HF
Crystal System kubisch, Ia3d

Chemism

Chem­ical formula

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

Chem­ical com­po­si­tion

Calcium, Silicium, Sauerstoff, Vanadium

Unit weight: 498.36797 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Ca3}[V2](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

38.52

12

60.00

15.9994300

191.9931600

Silicon

Si

16.91

3

15.00

28.0855300

84.2565900

Calcium

Ca

24.13

3

15.00

40.0784000

120.2352000

Vanadium

V

20.44

2

10.00

50.9415100

101.8830200

Anal­y­sis wt%

CaO : 33.30, MgO : 0.70, V2O3 : 18.30, Fe2O3 : 5.40, Al2O3 : 4.90, SiO2 : 36.60 (Ref: American Mineralogist 64)

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.08-140

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

Clas­sifica­tion by Hölzel

9.AC.430

9: SILICATES
A: Nesosilicates
C: Garnet-Group
4: Uvavorite-Group - 6-coord. Cr, V, Sc

Dana 8th edi­tion

51.04.03b.04

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

IMA Clas­sifica­tion

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

Optical Properties

Color

dunkelgrün, bräunlich grün

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent bis teilweise opak

RI value α / ω / n

1.821

Ri mean

1.821

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

12.011

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 (ų)

1732.756

X-Ray Pow­der Diffrac­tion

3.005(60),
2.688(100),
2.453(40),
2.357(20),
2.194(20),
1.951(20),
1.667(20),
1.607(50)

XRD chart Goldmanite

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

VHN (Hard­ness Vick­ers)

960 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.74

3.821 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ mixt. H2SO4-HF

Preface

Author (Name, Year)

Moench & Meyrowitz, 1964

References

American Mineralogist 49 (1964), 644.

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

 
{X3}[Y2](Z3)φ12
 
 


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

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

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

 
 
 
{Ca3}[Sc2](Si3)O12
kubisch
Ia3d

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

 
 
 
{Ca3}[Al2](Si3)O12
kubisch
Ia3d

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

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

 
 
 
{Mg3}[MgSi](Si3)O12
kubisch
 

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

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

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

 
 
 
{Mg3}[Al2](Si3)O12
kubisch
Ia3d

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

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

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Actuality: 24. Jun 2022 - 11:08:32

Other languages

German

Goldmanit

Spanish

Goldmanita

French

Goldmanite

English

Goldmanite

Russian

Голдманит

Japanese

灰バナジン柘榴石

Simplified Chinese

钙钒榴石

CNMNC (IMA)-Number

IMA 1963-003

CNMNC symbol

Symbol

Glm

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

German pages

DeWikiPedia - search for: Goldmanit
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Mineralienatlas.de (Forum) - search for: Goldmanit

English pages

Mindat - search for: Goldmanite
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Handbook-of-Mineralogy - search for: Goldmanite
RRUFF - Raman, XRD and other mineral data - search for: Goldmanite
RRUFF - References and PDF downloads - search for: Goldmanite
American-Mineralogist-Crystal-Structure-Database - search for: Goldmanite
Strahlen.org - search for: Goldmanite

Russian pages

Webmineral.ru - search for: Голдманит

Mineral Dealer

German pages

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Locations with GPS information