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Goldmanite (Goldmanit)

Pictures (5 Images total)

Goldmanit
Views (File:
1229772741
): 4389, Rating: 9
Goldmanit
Größe: 7,05 mm; Fundort: Bellecombe, Aostatal, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Aostatal (Valle d'Aosta), Region/Châtillon/Bellecombe
Mineral: Goldmanite
Image: 1229772741
Rating: 9 (votes: 7)
License: Usage for Mineralienatlas project only
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 (File:
1179774444
): 2576
Goldmanit
FO: Mine Molinello, Gambatesa Val, Graveglia, Italien; Größe: 5x4 mm
Copyright: rtbstone; Contribution: rtbstone
Collection: rtbstone
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Miniera di Molinello
Mineral: Goldmanite
Image: 1179774444
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
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 (File:
1579960327
): 491
Goldmanit
tiefgrüne Goldmanitkristalle eingewachsen im Skarn mit Pyrit von Rybnicek bei Pezinok/Slowakei; Bildbreite 3,2 mm
Copyright: Haubi; Contribution: Haubi
Collection: Pyrop
Location: Slowakei/Bratislavský kraj/Pezinok, Okres/Pezinok/Rybníček
Mineral: Goldmanite
Image: 1579960327
License: Usage for Mineralienatlas project only
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 (File:
1580399240
): 409
Goldmanit
Gambatesa Mine Val Graveglia; Bildbreite 1,2 mm
Copyright: Ulrich Hansper; Contribution: Ulrich Hansper
Collection: Ulrich Hansper
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Ne/Val Graveglia/Reppia/Miniera Valgraveglia (Gambatesa)
Mineral: Goldmanite
Image: 1580399240
License: Usage for Mineralienatlas project only
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 (File:
1608468774
): 179
Goldmanit
Bildbreite: 4 mm; Fundort: Rybnicek, Pezinok, Slowakei
Copyright: Martin Stevko; Contribution: slugslayer
Collection: Martin Stevko
Location: Slowakei/Bratislavský kraj/Pezinok, Okres/Pezinok/Rybníček
Mineral: Goldmanite
Image: 1608468774
License: Usage for Mineralienatlas project only
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

(Co-)Type locality

(Co-)Type locality

USA/New Mexico/Cibola Co./Laguna District/Sandy Mine/Unbenannter Prospekt

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

Other languages

German

Goldmanit

Spanish

Goldmanita

French

Goldmanite

English

Goldmanite

Russian

Голдманит

Japanese

灰ﾊﾞﾅｼﾞﾝ柘榴石

Simplified Chinese

钙钒榴石

CNMNC (IMA)-Number

IMA 1963-003

CNMNC symbol

Symbol

Glm

Locations with GPS information