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Morimotoite

Pictures (2 Images total)

Morimotoit
Views (Image: 1477520702): 566
Morimotoit

Morimotoit als glänzende schwarze Kruste von der Fuka Mine in Japan. Stufe von Alfredo Petrov

Copyright: Stefan
Contribution: Stefan 2016-10-27
Locality: Fuka Mine / Bitchu (Bicchu) / Takahashi / Okayama, Präfektur / Chugoku, Region / Honshu / Japan
Morimotoit
Views (Image: 1572212756): 251
Morimotoit

Bildbreite ca. 1 mm; Japan/Hokkaido/Hokkaido, Präfektur/Hidaka, Unterpräfektur/Saru, Landkreis/Hidaka/Chisaka/Serpentinitsteinbruch; Seltenheit; winzige gut ausgebildete Morimotoit-Kristalle; Stufe...

Copyright: Stefan
Contribution: Stefan 2019-10-27
Locality: Serpentinitsteinbruch / Chisaka / Hidaka / Saru, Landkreis / Hidaka, Unterpräfektur / Hokkaido, Präfektur / Hokkaido / Japan

Collectors Summary

Color schwarz
Streak color grau
Hardness (Mohs) 7.5
Cleavages nicht beobachtet
Fracture halbmuschelig
Crystal System kubisch, Ia3d

Chemism

Chem­ical formula

{Ca3}[TiFe2+](Si3)O12

Chem­ical com­po­si­tion

Calcium, Eisen, Silicium, Titan, Sauerstoff

Unit weight: 500.19725 u; Number of atoms in the formula: 20

Info

Empirical formula:

{Ca3}[TiFe](Si3)O12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

38.38

12

60.00

15.9994300

191.9931600

Silicon

Si

16.84

3

15.00

28.0855300

84.2565900

Calcium

Ca

24.04

3

15.00

40.0784000

120.2352000

Titanium

Ti

9.57

1

5.00

47.8671000

47.8671000

Iron

Fe

11.16

1

5.00

55.8452000

55.8452000

Anal­y­sis wt%

SiO2 : 26.93, TiO2 : 18.51, ZrO2 : 1.48, Al2O3 : 0.97, Fe2O3 : 11.42, FeO : 7.78, MgO : 0.87, CaO : 31.35 (Ref: Mineralogical Magazine 95)

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.08-125

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

Clas­sifica­tion by Hölzel

9.AC.510

9: SILICATES
A: Nesosilicates
C: Garnet-Group
5: Schorlomite-Group - 6-coord. Ti, Zr, Sn

Dana 8th edi­tion

51.04.03c.03

51: Nesosilicate Minerals
04: Nesosilicates Nesosilicate Insular SiO4 Groups Only with cations in [6] and >[6] coordination
03c: Garnet group (Schorlomite - Kimzeyite 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

schwarz

Streak color

grau

Diaphane­ity (Trans­parency)

opak

max. Birefrin­gence

0.000

RI value α / ω / n

1.995

Ri mean

1.995

2V angle

Isotropisch

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

12.162

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)

1798.933

X-Ray Pow­der Diffrac­tion

3.039(70),
2.720(100),
2.593(20),
2.483(50),
2.385(20),
1.973(20),
1.687(30),
1.626(60)

XRD chart Morimotoite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

7.5

VHN (Hard­ness Vick­ers)

1110 (50g)

Density (g/cm³)

3.75

3.694 ( ρ calc. Mineralienatlas )

Cleav­ages

nicht beobachtet

Frac­ture

halbmuschelig

Preface

Author (Name, Year)

Henmi & Kusachi & Henmi, 1995

References

Mineralogical Magazine 59 (1995), 115.

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

Morimotoit

French

Morimotoite

English

Morimotoite

Spanish

Morimotoíta

Russian

Моримотоит

Japanese

森本石榴石

CNMNC (IMA)-Number

IMA 1992-017

CNMNC symbol

Symbol

Mmt

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Моримотоит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Morimotoit
Crystal-Treasure.com - search for: Morimotoit
Bosse - search for: Morimotoit
Edelsteine Neuburg - Gundolf Fischer - search for: Morimotoit

Locations with GPS information