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Ilvaite

Pictures (65 Images total)

Ilvaite
Views (File:
1348328819
): 1303
Ilvaite
Perfect quality, finished all around, DT ilvaite crystal, that nested on matrix rock, from Huanggang Mine, Hexigten Banner, Ulanhad League, Inner Mongolia Autonomous Region, China; Size 80 х 60 х 57 mm
Copyright: pegmatite; Contribution: pegmatite
Collection: pegmatite
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang
Mineral: Ilvaite
Image: 1348328819
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Ilvaite

Perfect quality, finished all around, DT ilvaite crystal, that nested on matrix rock, from Huanggang Mine, Hexigten Banner, Ulanhad League, Inner Mongolia Autonomous Region, China; Size 80 х ...
Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2012-09-22
Locality: Huanggang / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China
Ilvait
Views (File:
1462198447
): 870
Ilvait
Langprismatische schwarze Kristalle mit Apophyllit auf Datolith, Bb = 6 mm; Fundort: Bor Pit, Dal'negorsk, Primorskiy Kray, Russland.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: B002069, Donator: Münchener Micromounter
Location: Russland/Ferner Osten, Föderationskreis/Primorje, Region (Primorskiy Kray)/Dal'negorsk (Dalnegorsk; Tetjuche)/Bor-Lagerstätte/Bor Pit
Mineral: Ilvaite
Image: 1462198447
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Ilvait (SNr: B002069)

Langprismatische schwarze Kristalle mit Apophyllit auf Datolith, Bb = 6 mm; Fundort: Bor Pit, Dal'negorsk, Primorskiy Kray, Russland.
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-05-02
Locality: Bor Pit / Bor-Lagerstätte / Dal'negorsk (Dalnegorsk; Tetjuche) / Primorje, Region (Primorskiy Kray) / Ferner Osten, Föderationskreis / Russland
Ilvait mit Quarz
Views (File:
1303463646
): 4436
Ilvait mit Quarz
Fundort: Kalabatsinas, Serifos, Kykladen, Griechenland; Stufengröße 12x10 cm; Ein Altfund von Albert Strasser, Salzburg
Copyright: robodoc; Contribution: robodoc
Location: Griechenland/Südliche Ägäis (Νότιο Αιγαίο)/Kykladen/Serifos, Insel
Mineral: Ilvaite
Image: 1303463646
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Ilvait mit Quarz

Fundort: Kalabatsinas, Serifos, Kykladen, Griechenland; Stufengröße 12x10 cm; Ein Altfund von Albert Strasser, Salzburg
Copyright: robodoc
Contribution: robodoc 2011-04-22
Locality: Serifos, Insel / Kykladen / Südliche Ägäis (Νότιο Αιγαίο) / Griechenland
Ilvaite
Views (File:
1387704050
): 1103
Ilvaite
DT, finished all around ilvaite crystals, from Huanggang Mine, Hexigten Banner, Ulanhad League, Inner Mongolia Autonomous Region, China; Size 90 х 18 х 17 mm
Copyright: pegmatite; Contribution: pegmatite
Collection: pegmatite
Location: China/Innere Mongolei (Neimenggu)/Ulanhad Bund (Chifeng, Präf)/Chifeng, Stadt/Hexigten-Banner (Keshiketeng)/Huanggang-Sumugou, LS-Bezirk/Huanggang
Mineral: Ilvaite
Image: 1387704050
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Ilvaite

DT, finished all around ilvaite crystals, from Huanggang Mine, Hexigten Banner, Ulanhad League, Inner Mongolia Autonomous Region, China; Size 90 х 18 х 17 mm
Collection: pegmatite
Copyright: pegmatite
Contribution: pegmatite 2013-12-22
Locality: Huanggang / Huanggang-Sumugou, LS-Bezirk / Hexigten-Banner (Keshiketeng) / Chifeng, Stadt / Ulanhad Bund (Chifeng, Präf) / Innere Mongolei (Neimenggu) / China
Ilvait, Prasem
Views (File:
1424280118
): 1774
Ilvait, Prasem
brauner Ilvait mit Prasem; Größe: 26x25x15 mm; Fundort: Serifos, Kykladen, Griechenland
Copyright: Bob Griffis Minerals; Contribution: slugslayer
Location: Griechenland/Südliche Ägäis (Νότιο Αιγαίο)/Kykladen/Serifos, Insel
Mineral: Ilvaite, Prase
Image: 1424280118
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Ilvait, Prasem

brauner Ilvait mit Prasem; Größe: 26x25x15 mm; Fundort: Serifos, Kykladen, Griechenland
Copyright: Bob Griffis Minerals
Contribution: slugslayer 2015-02-18
Locality: Serifos, Insel / Kykladen / Südliche Ägäis (Νότιο Αιγαίο) / Griechenland
Ilvait
Views (File:
1262176341
): 3978, Rating: 8
Ilvait
Größe: 72x33x23 mm; Fundort: Dal'negorsk, Primorskiy Kray, Russland
Copyright: Fabre Minerals; Contribution: slugslayer
Location: Russland/Ferner Osten, Föderationskreis/Primorje, Region (Primorskiy Kray)/Dal'negorsk (Dalnegorsk; Tetjuche)
Mineral: Ilvaite
Image: 1262176341
Rating: 8 (votes: 4)
License: Usage for Mineralienatlas project only
Ilvait

Größe: 72x33x23 mm; Fundort: Dal'negorsk, Primorskiy Kray, Russland
Copyright: Fabre Minerals
Contribution: slugslayer 2009-12-30
Locality: Dal'negorsk (Dalnegorsk; Tetjuche) / Primorje, Region (Primorskiy Kray) / Ferner Osten, Föderationskreis / Russland

You find additional Ilvaite specimen at the Geolitho Museum

Collectors Summary

Color eisenschwarz, dunkel grauschwarz
Streak color bräunlichschwarz
Hardness (Mohs) 6
Solubility +++ Säuren
Crystal System monoklin, P21/a

Chemism

Chemical formula

CaFe22+Fe3+Si2O7O(OH)

Chemical composition

Calcium, Eisen, Silicium, Sauerstoff, Wasserstoff

Unit weight: 408.787877 u; Number of atoms in the formula: 16

Info

Empirical formula:

CaFe2FeSi2O7O(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.25

1

6.25

1.0079470

1.0079470
Oxygen

O

35.22

9

56.25

15.9994300

143.9948700
Silicon

Si

13.74

2

12.50

28.0855300

56.1710600
Calcium

Ca

9.80

1

6.25

40.0784000

40.0784000
Iron

Fe

40.98

3

18.75

55.8452000

167.5356000

Analysis wt%

SiO2 : 28.48, Fe2O3 : 19.37, FeO : 34.87, MnO : 1.08, CaO : 12.54, H2O : 2.18 (Ref: American Mineralogist 83)

Strunz 9th edition incl. updates

9.BE.07

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
07:

Lapis Classification

VIII/C.10-020

VIII: SILIKATE
C: Gruppensilikate
10: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F)

Classification by Hölzel

9.BE.370

9: SILICATES
B: Sorosilicates
E: Cuspidine-Tilleyite-Group

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

eisenschwarz, dunkel grauschwarz

Streak color

bräunlichschwarz

Diaphaneity (Transparency)

opak

max. Birefringence

0.156
Birefringence chart\! Ilvaite title=Birefringence chart Ilvaite

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

1.727

RI value β

1.870

RI value γ / ε

1.883

Ri mean

1.827

2V angle

Biaxial (-) 25°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

13.014

Cell parameters b (Å)

8.807

Cell parameters c (Å)

5.853

Cell parameters a/b or c/a

1.478

Cell parameters c/b

0.665

Cell parameters α

90°

Cell parameters β

90.22

Cell parameters γ

90°

Z

4

Volumne (ų)

670.833

X-Ray Powder Diffraction

2.866(40),
2.843(100),
2.716(70),
2.679(50),
2.435(40),
2.174(60),
2.111(50),
1.498(40)
XRD chart Ilvaite

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

VHN (Hardness Vickers)

758 (100g)

Density (g/cm³)

3.99 - 4.05 / Durchschnittlich = 4.01

4.047 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Capoliveri/Miniera di Capo Calamita

Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Rio Marina/Torre di Rio - Santa Filomena

Preface

Name from

dem lateinischen Namen der Insel Elba - Ilva

Author (Name, Year)

Steffens, 1811

References

Physics and Chemistry of Minerals 32 (2005), 388

Other languages

Dutch

Ilvaiet

German

Ilvait

Lithuanian

Ilvaitas

French

Ilvaite

English

Ilvaite

Spanish

Ilvaíta

Russian

Ильваит

Japanese

珪灰鉄鉱

Simplified Chinese

黑柱石

Alternative Name

Baddeleyite (of Clarke)

German

Breislakit

Spanish

Breislakita

Breislakite

German

Cyclopeit

Spanish

Cyclopeita

Cyclopeite

Elbaite (of Giesecke)

English

Jenite

German

Lievrit

Spanish

Lievrita

English

Lievrite

Italian

Yenita

English

Yenite

CNMNC symbol

Symbol

Ilv

Locations with GPS information