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Ferri-ghoseite

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Parvowinchit
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Parvowinchit

Bildbreite: 8 mm, Fundort: Varenche Mine, St. Barthélemy, Nus, Aostatal (Valle d'Aosta), Italien

Copyright: Luigi Chiappino
Contribution: thdun5 2011-04-15
Locality: Varenche Mine / St. Barthélemy / Nus / Aostatal (Valle d'Aosta), Region / Italien

Collectors Summary

Color strohgelb
Lustre Glasglanz
Solubility - HCl
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

☐(NaMn2+)(Mg4Fe3+)Si8O22(OH)2

Addi­tional chem. informa­tion

Amphibol Gruppe

Chem­ical com­po­si­tion

Eisen, Magnesium, Mangan, Natrium, Silicium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 841.67971411 u; Number of atoms in the formula: 42

Info

Empirical formula:

Vc(NaMn)(Mg4Fe)Si8O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Vacancy

Vc

0.00

1

2.38

0.0000000

0.0000000

Hydrogen

H

0.24

2

4.76

1.0079470

2.0158940

Oxygen

O

45.62

24

57.14

15.9994300

383.9863200

Sodium

Na

2.73

1

2.38

22.9897702

22.9897702

Magnesium

Mg

11.55

4

9.52

24.3050600

97.2202400

Silicon

Si

26.69

8

19.05

28.0855300

224.6842400

Manganese

Mn

6.53

1

2.38

54.9380499

54.9380499

Iron

Fe

6.63

1

2.38

55.8452000

55.8452000

Strunz 9th edi­tion incl. updates

9.DE.20

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
20:

Lapis Clas­sifica­tion

VIII/F.09-085

VIII: SILIKATE
F: Ketten- und Bandsilikate
9: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Na-Ca-Amphibole

Clas­sifica­tion by Hölzel

9.DI.240

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
I: Amphiboles; Sodiccalcic Amphiboles
2: Winchite-Group

Dana 8th edi­tion

66.01.03b.01a

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration
03b: Group 3, the sodic-calcic amphiboles

IMA sta­tus

anerkannt 2003

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium-calcium amphiboles  ⇒ Ghoseite amphiboles

Optical Properties

Color

strohgelb

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Glasglanz

Optical Data Luminescence

Color LW-UV (365nm)

 

rot

Color SW-UV (254nm)

 

lachsrosa

Most Common Acti­vator

Mn2+

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.943

Cell param­e­ters b (Å)

18.206

Cell param­e­ters c (Å)

5.328

Cell param­e­ters a/b or c/a

0.546

Cell param­e­ters c/b

0.293

Cell param­e­ters α

90°

Cell param­e­ters β

103.97

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

935.959

X-Ray Pow­der Diffrac­tion

8.36(76), 3.40(62), 3.26(34), 3.10(66), 2.714(100), 2.591(35), 2.522(61), 2.166(36)

XRD chart Ferri-ghoseite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.986 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- HCl

Preface

Author (Name, Year)

Leake & etc., 2003

References

European Journal of Mineralogy 5 (1993), 1153.

Neue Mineralien Februar: 2013; CNMNC Newsletter No. 15, February 2013, Seite 2; Mineralogical Magazine, 77, 112.

IMA group assignments




 
 
 
 
☐(NaMn2+)(Mg4Al)Si8O22(OH)2
 
 

 
 
 
 
 
☐(NaMn2+)(Mg4Fe3+)Si8O22(OH)2
monoklin
C2/m

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Actuality: 17. May 2022 - 22:53:29

Other languages

German

Ferri-Ghoseit

English

Ferri-ghoseite

Spanish

Parvowinchita

French

Parvowinchite

Russian

Ферригхосеит

old name

German

Parvowinchit

IMA 12-F; Neue Mineralien Februar: 2013; CNMNC Newsletter No. 15, February 2013, Seite 2; Mineralogical Magazine, 77, 112.

English

Parvowinchite

IMA 12-F; Neue Mineralien Februar: 2013; CNMNC Newsletter No. 15, February 2013, Seite 2; Mineralogical Magazine, 77, 112.

Alternative Name

Alkali-bearing Manganocummingtonite

German

Ferrighoseit

Russian

Тиродит

CNMNC (IMA)-Number

IMA 2003-066

CNMNC symbol

Symbol

Fgh

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

German pages

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English pages

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RRUFF - References and PDF downloads - search for: Ferri-ghoseite
American-Mineralogist-Crystal-Structure-Database - search for: Ferri-ghoseite
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Russian pages

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German pages

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