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Ferro-ferri-nybøite

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Ferro-Ferri-Nybøit
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Ferro-Ferri-Nybøit

Spaltstücke von schwarzen Kristallen von Ferro-Ferri-Nybøit, Abdong, Pyonggang-gun, Kangwon-do, Nordkorea; BB 5 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-25
Locality: Abdong Zr-Nb-Lagerstätte (Abtong) / Pyonggang-gun / Kangwon-do, Provinz / Nordkorea

Collectors Summary

Color schwarz
Streak color graugrün bis schwarz
Hardness (Mohs) 6
Cleavages vollkommen {110}
Fracture splittrig
Crystal System monoklin, C2/m

Additional information / Summary

Kristalle zeigen extreme optische Absorption durch Intervalenz Ladungstransfer, welcher die Messung der optischen Eigenschaften hemmt.

Chemism

Chem­ical formula

NaNa2(Fe2+3Fe3+2)Si8O22(OH)2

Empir­ical formula (anal­y­sis)

(Na0.68K0.27)Σ0.95(Na1.83Ca0.17)Σ2.00 (Mg0.06Fe2+3.17Mn0.31Zn0.01Fe3+1.36Ti0.06)Σ4.97 (Si7.41Al0.59)Σ8.00 O22(OH1.58F0.42)Σ2.00

Addi­tional chem. informa­tion

Amphibol-Supergruppe

A Position: Na dominant
C2+ Position: Fe dominant
C3+ Position: Fe dominant
W Position: (OH) dominant

Chem­ical com­po­si­tion

Eisen, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 951.659830434 u; Number of atoms in the formula: 40.92

Info

Empirical formula:

(Na0.68K0.27)(Na1.83Ca0.17)(Mg0.06Fe3.17Mn0.31Zn0.01Fe1.36Ti0.06)(Si7.41Al0.59)O22(OH1.58F0.42)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.17

1.58

3.86

1.0079470

1.5925563

Oxygen

O

38.67

23

56.21

15.9994300

367.9868900

Fluorine

F

0.84

0.42

1.03

18.9984033

7.9793294

Sodium

Na

6.06

2.51

6.13

22.9897702

57.7043232

Magnesium

Mg

0.15

0.06

0.15

24.3050600

1.4583036

Aluminium

Al

1.67

0.59

1.44

26.9815382

15.9191075

Silicon

Si

21.87

7.41

18.11

28.0855300

208.1137773

Potassium

K

1.11

0.27

0.66

39.0983100

10.5565437

Calcium

Ca

0.72

0.17

0.42

40.0784000

6.8133280

Titanium

Ti

0.30

0.06

0.15

47.8671000

2.8720260

Manganese

Mn

1.79

0.31

0.76

54.9380499

17.0307955

Iron

Fe

26.58

4.53

11.07

55.8452000

252.9787560

Zinc

Zn

0.07

0.01

0.02

65.4094000

0.6540940

Anal­y­sis wt%

SiO2 : 45.80, Al2O3 : 3.11, TiO2 :0.50, Fe2O3 : 11.18, FeO : 23.45, MnO : 2.28, ZnO : 0.12, MgO : 0.23, CaO : 0.99, Na2O : 8.01, K2O : 1.30, F : 0.81, H2O calc : 1.47, O ≡ F : -0.34, Total : 98.91 wt.%

Strunz 9th edi­tion incl. updates

9.DE.25

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

Clas­sifica­tion by Hölzel

9.DJ.660

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
J: Amphiboles; Sodic Amphiboles
6: Nyböite-Group

IMA sta­tus

anerkannt - CNMNC Newsletter No. 18, Dezember 2013

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium Amphiboles  ⇒ Nybøite (Nyb) amphiboles

Optical Properties

Color

schwarz

Streak color

graugrün bis schwarz

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.9190(5)

Cell param­e­ters b (Å)

18.0885(8)

Cell param­e­ters c (Å)

5.3440

Cell param­e­ters a/b or c/a

0.548

Cell param­e­ters c/b

0.295

Cell param­e­ters α

90°

Cell param­e­ters β

103.813°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

931.091

X-Ray Pow­der Diffrac­tion

8.520(100), 3.298(7), 3.162(55), 2.834(24), 2.732(10), 2.552(10), 2.344(9), 1.671(19)

XRD chart Ferro-ferri-nybøite

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

Physical Properties

Hard­ness (Mohs)

6

Density (g/cm³)

3.424 (berechnet)

3.394 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {110}

Frac­ture

splittrig

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Kanada/Québec/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)

Type mate­r­ial

Department of Natural History, Royal Ontario Museum, Toronto, Ontario, Kanada

Col­lec­tion number of type mate­r­ial

M55980

Preface

Author (Name, Year)

Leake u.w., 1997

References

Canadian Mineralogist 35 (1997), 219.

Canadian Mineralogist 41 (2003), 1355.

Rock-forming Minerals (Deer, Howie & Zussmann), 2B, 2nd ed. (1997), Table 35, anal. 5.

Lussier, A.J., Hawthorne, F.C., Abdu, Y., Ball, N.A., Tait, K.T., Back, M.E., Steede, A.H., Taylor, R. und MacDonald, A.M. (2013) Ferro-ferri-nybøite, IMA 2013-072. CNMNC Newsletter No. 18, December 2013, page 3251; Mineralogical Magazine, 77, 3249-3258.

Lussier, A.J., Hawthorne, F.C., Abdu, Y.A., Ball, N.A., Tait, K.T., Back, M.E., Steede, A.H., Taylor, R., McDonald, A.M. - Ferro-ferri-nybøite, NaNa2(Fe2+3Fe3+2)Si8O22(OH)2, a new clinoamphibole from Mont Saint-Hilaire, Québec, Canada: Description and crystal structure. Canadian Mineralogist, 52 (2014), 1019-1026.

IMA group assignments

Other languages

German

Ferro-Ferri-Nybøit

English

Ferro-ferri-nybøite

Russian

Ферроферринибёит

old name

German

Ferric-Ferronyböit (1997)

German

Ferric-Ferronybøit (1997)

English

Ferric-ferronyböite (1997)

English

Ferric-ferronybøite (1997)

Alternative Name

German

Ferriferronybøit (Hölzel)

wird von Hölzel verwendet

German

Ferroferrinyböit

CNMNC (IMA)-Number

IMA 2013-072

CNMNC symbol

Symbol

Ffnyb

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

German pages

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English pages

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Russian pages

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