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Geikielite

Pictures (9 Images total)

Geikielith
Views (File:
1316502651
): 1319, Rating: 9.2
Geikielith
Größe: 0,86 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma/Ercolano/San Vito/Steinbruch San Vito (Cava San Vito)
Mineral: Geikielite
Image: 1316502651
Rating: 9.2 (votes: 5)
License: Usage for Mineralienatlas project only
Geikielith

Größe: 0,86 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2011-09-20
Locality: Steinbruch San Vito (Cava San Vito) / San Vito / Ercolano / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Geikielith
Views (File:
1278147590
): 972
Geikielith
Kristallgröße: 0,7 mm, Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien
Copyright: Enrico Bonacina; Contribution: thdun5
Collection: Domenico Preite
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma/Ercolano/San Vito/Steinbruch San Vito (Cava San Vito)
Mineral: Geikielite
Image: 1278147590
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Geikielith

Kristallgröße: 0,7 mm, Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-07-03
Locality: Steinbruch San Vito (Cava San Vito) / San Vito / Ercolano / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Geikielith
Views (File:
1256716576
): 1576
Geikielith
Größe: 1,3 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Geikielite
Image: 1256716576
Rating: 7.67 (votes: 3)
License: Usage for Mineralienatlas project only
Geikielith

Größe: 1,3 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2009-10-28
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Geikielith
Views (File:
1303683451
): 1136
Geikielith
Größe: 0,32 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma
Mineral: Geikielite
Image: 1303683451
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Geikielith

Größe: 0,32 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2011-04-25
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Geikielith
Views (File:
1316502293
): 1148
Geikielith
Größe: 0,66 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma/Ercolano/San Vito/Steinbruch San Vito (Cava San Vito)
Mineral: Geikielite
Image: 1316502293
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Geikielith

Größe: 0,66 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2011-09-20
Locality: Steinbruch San Vito (Cava San Vito) / San Vito / Ercolano / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Geikielith
Views (File:
1217697083
): 844
Geikielith
Größe: 0,9 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel , Kampanien (Campania), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Kampanien (Campania), Region/Neapel, Provinz/Somma-Vesuv-Komplex/Monte Somma/Ercolano/San Vito/Steinbruch San Vito (Cava San Vito)
Mineral: Geikielite
Image: 1217697083
Rating: 6.67 (votes: 3)
License: Usage for Mineralienatlas project only
Geikielith

Größe: 0,9 mm; Fundort: Steinbruch San Vito, San Vito, Ercolano, Monte Somma, Somma-Vesuv-Komplex, Neapel , Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-08-02
Locality: Steinbruch San Vito (Cava San Vito) / San Vito / Ercolano / Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien

Collectors Summary

Color grau mit roten Innenreflexen
Streak color purpurfarben braun
Hardness (Mohs) 5.5
Solubility + heiße HCl
Crystal System trigonal, R3

Additional information / Summary

Chemism

Chem­ical formula

MgTiO3

Addi­tional chem. informa­tion

Lt. Strunz 9. Edition: auch zugehörig zur Ilmenit Serie

Chem­ical com­po­si­tion

Magnesium, Titan, Sauerstoff

Unit weight: 120.17045 u; Number of atoms in the formula: 5

Info

Empirical formula:

MgTiO3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

39.94

3

60.00

15.9994300

47.9982900

Magnesium

Mg

20.23

1

20.00

24.3050600

24.3050600

Titanium

Ti

39.83

1

20.00

47.8671000

47.8671000

Anal­y­sis wt%

TiO2 : 63.94, FeO : 10.09, MgO : 25.79 (Ref: Dana, 7th ed. 1)

Strunz 9th edi­tion incl. updates

4.CB.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
C: Metall: Sauerstoff = 2: 3,3: 5, und vergleichbare
B: Mit mittelgroßen Kationen
05:Korund-Gruppe

Lapis Clas­sifica­tion

IV/C.05-010

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
5: Ilmenit-Gruppe

Clas­sifica­tion by Hölzel

4.CD.100

4: OXIDES
C: R2O3 Sesquioxides
D: Ilmenite-Group

Dana 8th edi­tion

04.03.05.02

04: Oxide Minerals
03: Simple Oxides with a cation charge of 3+ (A+++2 O3)
05: Ilmenite Group

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Classification

Ilmenite group

Optical Properties

Color

grau mit roten Innenreflexen

Streak color

purpurfarben braun

Diaphane­ity (Trans­parency)

durchscheinend bis opak

max. Birefrin­gence

0.36

Birefringence chart\! Geikielite title=Birefringence chart Geikielite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

2.31

RI value γ / ε

1.95

Ri mean

2.190

2V angle

Uniaxial (-)

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell param­e­ters a (Å)

5.054

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

13.898

Cell param­e­ters a/b or c/a

2.750

Cell param­e­ters c/b

-

Z

6

Volumne (ų)

307.435

X-Ray Pow­der Diffrac­tion

4.67(10),
3.723(30),
2.735(100),
2.536(40),
2.226(40),
1.859(40),
1.714(60),
1.499(10)

XRD chart Geikielite

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)

5.5

VHN (Hard­ness Vick­ers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4

3.894 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+ heiße HCl

Preface

Author (Name, Year)

Dick, 1892

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 220

IMA group assignments

Other languages

Spanish

Geikielita

English

Geikielite

French

Geikielite

German

Geikielith

Russian

Гейкилит

Simplified Chinese

镁钛矿

Japanese

ゲイキ石

Alternative Name

Geikielit

Geikilithe

CNMNC symbol

Symbol

Gk

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

German pages

DeWikiPedia - search for: Geikielith
Google-Bilder-Suche - search for: Geikielith
Mineralienatlas.de (Forum) - search for: Geikielith

English pages

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

Russian pages

Webmineral.ru - search for: Гейкилит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Geikielith
Crystal-Treasure.com - search for: Geikielith
Bosse - search for: Geikielith
Edelsteine Neuburg - Gundolf Fischer - search for: Geikielith
Geolitho marketplace, by and for collectors - search for: Geikielith

Locations with GPS information