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Fluoro-nybøite

Additional Functions

Collectors Summary

Color bräunlichgrau
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 6
Cleavages undeutlich {110}
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

NaNa2(Mg3Al2)(AlSi7O22)(F,OH)2

Addi­tional chem. informa­tion

A Position: Na dominant
C2+ Position: Mg dominant
C3+ Position: Al dominant
W Position: F dominant

Chem­ical com­po­si­tion

Aluminium, Magnesium, Natrium, Silicium, Fluor, Sauerstoff, Wasserstoff

Unit weight: 808.416568575 u; Number of atoms in the formula: 40.5

Info

Empirical formula:

NaNa2(Mg3Al2)(AlSi7O22)(F0.75(OH)0.25)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.06

0.5

1.23

1.0079470

0.5039735
Oxygen

O

44.53

22.5

55.56

15.9994300

359.9871750
Fluorine

F

3.53

1.5

3.70

18.9984033

28.4976049
Sodium

Na

8.53

3

7.41

22.9897702

68.9693106
Magnesium

Mg

9.02

3

7.41

24.3050600

72.9151800
Aluminium

Al

10.01

3

7.41

26.9815382

80.9446146
Silicon

Si

24.32

7

17.28

28.0855300

196.5987100

Anal­y­sis wt%

SiO2 : 50.15, Al2O3 : 12.35, Fe2O3 : 2.94, FeO : 7.47, MgO : 12.07, CaO : 3.03, Na2O : 8.40, F : 2.58, H2O : 0.88 (Ref: Mineralogical Magazine 2003)

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

Lapis Clas­sifica­tion

VIII/F.08-055

VIII: SILIKATE
F: Ketten- und Bandsilikate
8: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Alkali-Amphibole

Clas­sifica­tion by Hölzel

9.DJ.610

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

Dana 8th edi­tion

66.01.03c.11c

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration
03c: Group 4, the sodic amphiboles

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Classification

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

Optical Properties

Color

bräunlichgrau

Streak color

weiß

Lus­tre

Glasglanz

max. Birefrin­gence

0.007
Birefringence chart\! Fluoro-nybøite title=Birefringence chart Fluoro-nybøite

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

1.633°?

RI value β

1.624

RI value γ / ε

1.626

Ri mean

1.628

2V angle

Biaxial (-)

Pleochro­ism

Im polarisiertem Licht starker Pleochroismus von farblos über lila nach blaß bläulichgrün.

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

9.666

Cell param­e­ters b (Å)

17.799

Cell param­e­ters c (Å)

5.311

Cell param­e­ters a/b or c/a

0.543

Cell param­e­ters c/b

0.298

Cell param­e­ters α

90°

Cell param­e­ters β

104.10

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

886.203

X-Ray Pow­der Diffrac­tion

8.31(60),
4.450(30),
3.382(40),
3.079(60),
2.691(100),
2.571(40),
2.532(50),
2.146(30)
XRD chart Fluoro-nybøite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

6

VHN (Hard­ness Vick­ers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.18

3.029 ( ρ calc. Mineralienatlas )

Cleav­ages

undeutlich {110}

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

China/Jiangsu, Provinz/Lianyungang, Präfektur/Donghai, Kreis/Jianchang

Preface

Name from

Der Name bezieht sich auf die kristallchemische Verwandtschaft mit Nyböit.

Author (Name, Year)

Oberti & Boiocchi & Smith, 2003

References

Mineralogical Magazine 67 (2003), 769

Leake B E, Woolley A R, Arps C E S, Birch W D, Gilbert M C, Grice J D, Hawthorne F C, Kato A, Kisch H J, Krivovichev V G, Linthout K, Laird J, Mandarino J A, Maresch W V, Nickel E H, Rock N M S, Schumacher J C, Smith D C, Stephenson N C N, Ungaretti L, Whittaker E J W, Youzhi G (1997) Nomenclature of amphiboles: Report of the subcommittee on amphiboles of the International Mineralogical Association, commission on new minerals and mineral names, The Canadian Mineralogist 35, 219-246

IMA group assignments

Other languages

German

Fluoro-Nybøit

Spanish

Fluoro-nybøita

English

Fluoro-nybøite

French

Fluoro-nybøite

old name

German

Fluoronybøit

English

Fluoronybøite

Alternative Name

English

Fluoronyboite

German

Fluoronyböit

Spanish

Fluoronyböita

CNMNC symbol

Symbol

Fnyb

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

German pages

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Google-Bilder-Suche - search for: Fluoro-Nybøit
Mineralienatlas.de (Forum) - search for: Fluoro-Nybøit

English pages

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RRUFF - Raman, XRD and other mineral data - search for: Fluoro-nybøite
RRUFF - References and PDF downloads - search for: Fluoro-nybøite
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