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Bosiite

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Bosiit
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Bosiit
rotbraunes strahliges Aggregat von Bosiit, La Valette-Tal, La Lauzière Massiv, Savoie, Auvergne-Rhône-Alpes, Frankreich; BB ~ 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Frankreich/Auvergne-Rhône-Alpes, Region/Savoie, Département/Albertville, Arrondissement/La Léchère/Celliers/La Valette-Tal
Mineral: Bosiite
Image: 1586511088
License: Usage for Mineralienatlas project only
Bosiit

rotbraunes strahliges Aggregat von Bosiit, La Valette-Tal, La Lauzière Massiv, Savoie, Auvergne-Rhône-Alpes, Frankreich; BB 5 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-04-10
Locality: La Valette-Tal / Celliers / La Léchère / Albertville, Arrondissement / Savoie, Département / Auvergne-Rhône-Alpes, Region / Frankreich

Collectors Summary

Color dunkelbraun, schwarz
Streak color blass braun
Hardness (Mohs) 7
Cleavages keine Spaltbarkeit oder Teilbarkeit beobachtet
Crystal System trigonal, R3m

Chemism

Chemical formula

NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O

Empirical formula (analysis)

X(Na0.73Ca0.23◻0.04)Σ1.00 Y(Fe3+1.47Mg0.80Fe2+0.59Al0.13Ti4+0.01)Σ3.00 Z(Al3.23Fe3+1.88Mg0.89)Σ6.00 T(Si5.92Al0.08O18)Σ6:00 (BO3)3)V(OH)3 W[O0.85(OH)0.15]Σ1.00

Additional chem. information

Empirische Formel basiert auf EPMA, ICP-MS, Mössbauer Spectroskopie und Kristallstrukturanalyse basierend auf 31 Sauerstoff apfu, optimiert nach Unterbringung von Störung und Kationen Zuordnung

Chemical composition

Aluminium, Eisen, Magnesium, Natrium, Silicium, Bor, Sauerstoff, Wasserstoff

Unit weight: 1129.201676704 u; Number of atoms in the formula: 54.11

Info

Empirical formula:

(Na0.73Ca0.23◻0.04)(Fe1.47Mg0.80Fe0.59Al0.13Ti0.01)(Al3.23Fe1.88Mg0.89) (Si5.92Al0.08O18)(BO3)3)V(OH)3[O0.85(OH)0.15]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.28

3.15

5.82

1.0079470

3.1750331
Boron

B

2.87

3

5.54

10.8117000

32.4351000
Oxygen

O

43.92

31

57.29

15.9994300

495.9823300
Sodium

Na

1.49

0.73

1.35

22.9897702

16.7825322
Magnesium

Mg

3.64

1.69

3.12

24.3050600

41.0755514
Aluminium

Al

8.22

3.44

6.36

26.9815382

92.8164914
Silicon

Si

14.72

5.92

10.94

28.0855300

166.2663376
Calcium

Ca

0.82

0.23

0.43

40.0784000

9.2180320
Titanium

Ti

0.04

0.01

0.02

47.8671000

0.4786710
Vanadium

V

4.51

1

1.85

50.9415100

50.9415100
Iron

Fe

19.49

3.94

7.28

55.8452000

220.0300880

Strunz 9th edition incl. updates

9.CK.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
K: ~[Si6O18]12- sechser-Einfachringe, mit inselartig, komplexe [Anionen]
05:

Lapis Classification

VIII/E.19-072

VIII: SILIKATE
E: Ringsilikate
19: Sechserringe [Si6O18] 12-; Turmalin-Gruppe

IMA status

anerkannt - CNMNC Newsletter No. 24, April 2015

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Tourmaline supergroup  ⇒ Alkali-Tourmaline group

Optical Properties

Color

dunkelbraun, schwarz

Streak color

blass braun

max. Birefringence

0.073
Birefringence chart\! Bosiite title=Birefringence chart Bosiite

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

ω = 1.760(5)

RI value γ / ε

ε = 1.687(5)

2V angle

Uniaxial (-)

Pleochroism

In linear polarisiertem Licht ist das Mineral pleochroisch, O = gelbbraun, E = rotbraun

Optical Data Luminescence

Luminescence

keine Fluoreszenz

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell parameters a (Å)

16.101(3)

Cell parameters b (Å)

-

Cell parameters c (Å)

7.327(2)

Cell parameters a/b or c/a

0.455

Cell parameters c/b

-

Z

3

Volume (ų)

1644.987

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

8.051(58), 4.648(28), 4.279(46), 4.025(57), 3.543(50), 3.008(58), 2.606(100), 2.068(45)
XRD chart Bosiite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

7

Density (g/cm³)

3.23(3) (gemessen) 3.26(1) (berechnet)

3.419 ( ρ calc. Mineralienatlas )

Cleavages

keine Spaltbarkeit oder Teilbarkeit beobachtet

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Russland/Sibirien, Föderationskreis/Transbaikalien, Region (Zabaykalsky Krai)/Vershino-Darasunskiy/Darasun

Type material

Naturhistorisches Museum Wien

Collection number of type material

N 9793

Paragenesis of type material

Tetraedrit, Sphalerit, Quarz, Pyrrhotin, Pyrit, Oxy-Dravit, Gold, Galenit, Dravit, Dolomit, Chalkopyrit, Calcit, Arsenopyrit

Preface

Name from

Der Name ehrt Dr Ferdinando Bosi, Forscher an der the Universität von Rome La Sapienza, Italien. Er ist Experte der Kristallographie und Mineralogie von Turmalinen und Spinellen.

Author (Name, Year)

Andreas Ertl, Ivan A. Baksheev, Gerald Giester, Christian L. Lengauer, Vsevolod Yu. Prokofiev, Lidiya D. Zorina (2016)

References

Ertl, A., Baksheev, I.A., Giester, G., Lengauer, C.L., Prokofiev, V.Y. and Zorina, L.D. (2015) Bosiite, IMA 2014-094. CNMNC Newsletter No. 24, April 2015, page 249; Mineralogical Magazine, 79, 247-251.

Andreas Ertl, Ivan A. Baksheev, Gerald Giester, Christian L. Lengauer, Vsevolod Yu. Prokofiev, Lidiya D. Zorina: Bosiite, NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O, a new ferric member of the tourmaline supergroup from the Darasun gold deposit, Transbaikalia, Russia. Eur J Mineral Vol. 28 (2016) S. 581-591.

IMA group assignments

 
Tourmaline supergroup
 
trigonal
R3m

 
 
Alkali-Tourmaline group
 
 
 

 
 
 
Bosiite
NaFe3+3(Al4Mg2)(Si6O18)(BO3)3(OH)3O
trigonal
R3m

 
 
 
Tourmaline Alkali-subgroup 1
 
 
 

 
 
 
 
Chromium-Dravite
NaMg3(Cr,Fe3+)6(BO3)3Si6O18(OH)4
trigonal
R3m

 
 
 
 
Dravite
NaMg3Al6(BO3)3Si6O18(OH)4
trigonal
R3m

 
 
 
 
Fluor-dravite
NaMg3Al6Si6O18(BO3)3(OH)3F
trigonal
R3m

 
 
 
 
Fluor-schorl
NaFe2+3Al6Si6O18(BO3)3(OH)3F
trigonal
R3m

 
 
 
 
Fluor-tsilaisite
NaMn2+3Al6(Si6O18)(BO3)3(OH)3F
trigonal
R3m

 
 
 
 
Oxy-chromium-dravite
NaCr3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O
trigonal
R3m

 
 
 
 
Oxy-dravite
Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O
trigonal
R3m

 
 
 
 
Oxy-vanadium-dravite
Na(Mg,V3+)3(V3+,Al,Cr3+)6[(OH,O)4|(BO3)3|(Si6O18]
trigonal
R3m

 
 
 
 
Schorl
NaFe2+3Al6(BO3)3Si6O18(OH)4
trigonal
R3m

 
 
 
 
Tsilaisite
NaMn2+3Al6(Si6O18)(BO3)3(OH)3(OH)
trigonal
R3m

 
 
 
 
Vanadio-oxy-chromium-dravite
NaV3(Cr4Mg2)(Si6O18)(BO3)3(OH)3O
trigonal
R3m

 
 
 
 
Vanadio-oxy-dravite
NaV3(Al4Mg2)(Si6O18)(BO3)3(OH)3O
trigonal
R3m

 
 
 
Tourmaline Alkali-subgroup 2
 
 
 

 
 
 
 
Elbaite
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
trigonal
R3m

 
 
 
 
Fluor-elbaite
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
trigonal
R3m

 
 
 
Tourmaline Alkali-subgroup 3
 
 
 

 
 
 
 
Chromo-alumino-povondraite
NaCr3(Al4Mg2)(Si6O18)(BO3)3(OH)3O
trigonal
R3m

 
 
 
 
Oxy-schorl
Na(Fe2+2Al)Al6Si6O18(BO3)3(OH)3O
trigonal
R3m

 
 
 
 
Povondraite
(Na,K)(Fe3+,Fe2+)3(Fe3+,Mg,Al)6[(OH)4|(BO3)3|Si6O18]
trigonal
R3m

 
 
 
Tourmaline Alkali-subgroup 4
 
 
 

 
 
 
Tourmaline Alkali-subgroup 5
 
 
 

 
 
 
 
Fluor-Buergerite
NaFe3+3Al6(BO3)3Si6O21F
trigonal
R3m

 
 
 
 
Olenite
NaAl3Al6(BO3)3(Si6O18)(O,OH)4
trigonal
R3m

 
 
 
Tourmaline Alkali-subgroup 6
 
 
 

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Actuality: 13. Sep 2024 - 09:17:50

Other languages

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English

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Russian

Бозиит

CNMNC (IMA)-Number

IMA 2014-094

CNMNC symbol

Symbol

Bos

Locations with GPS information

IDs

GUSID (Global unique identifier short form) tAPBttxkREaCCS65Pn9s4w
GUID (Global unique identifier) B6C103B4-64DC-4644-8209-2EB93E7F6CE3
Database ID 7904