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Leucosphenite

Pictures (7 Images total)

Leukosphenit
Views (File:
1165499333
): 1012
Leukosphenit
Bildbreite: 4 mm; Fundort Mont Saint-Hilaire, Quebéc, Kanada
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)
Mineral: Leucosphenite
Image: 1165499333
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Leukosphenit

Bildbreite: 4 mm; Fundort Mont Saint-Hilaire, Quebéc, Kanada
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-07
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec, Provinz / Kanada
Leukosphenit (dunkelblau, radialstrahlig) mit hellblauem Narsarsukit
Views (File:
1244294861
): 1081
Leukosphenit (dunkelblau, radialstrahlig) mit hellblauem Narsarsukit
Bildbreite: 4 mm; Fundort: Jubiläumspegmatit, Karnarsurt-Berg, Lovozero-Massiv, Kola-Halbinsel, Russland
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Lovozero/Karnasurt, Berg/Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja)
Mineral: Leucosphenite, Narsarsukite
Image: 1244294861
License: Usage for Mineralienatlas project only
Leukosphenit (dunkelblau, radialstrahlig) mit hellblauem Narsarsukit

Bildbreite: 4 mm; Fundort: Jubiläumspegmatit, Karnarsurt-Berg, Lovozero-Massiv, Kola-Halbinsel, Russland
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-06-06
Locality: Jubiläumspegmatit (Yubileinaya; Yubileinoye; Jubilejnaja) / Karnasurt, Berg / Lovozero / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Leukosphenit
Views (File:
1274651800
): 878
Leukosphenit
Größe: 5,1 x 4,1 x 3,6 cm, Fundort: Dara-i-Pioz, Tien Shan-Gebirge, Tadschikistan
Copyright: Dan Weinrich; Contribution: thdun5
Location: Tadschikistan/Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij)/Dara-i-Pioz (Darai-Pioz)
Mineral: Leucosphenite
Image: 1274651800
License: Usage for Mineralienatlas project only
Leukosphenit

Größe: 5,1 x 4,1 x 3,6 cm, Fundort: Dara-i-Pioz, Tien Shan-Gebirge, Tadschikistan
Copyright: Dan Weinrich
Contribution: thdun5 2010-05-23
Locality: Dara-i-Pioz (Darai-Pioz) / Republik-unterstellte Gebiete (Nohijahoi tobei Dschumhurij) / Tadschikistan
Leukosphenit
Views (File:
1275738747
): 677
Leukosphenit
Kristallgröße: 1,4 mm, Fundort: Poudrette quarry, Mont Saint-Hilaire, Rouville Co., Québec, Kanada
Copyright: Jason B. Smith; Contribution: thdun5
Location: Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire/Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry)
Mineral: Leucosphenite
Image: 1275738747
License: Usage for Mineralienatlas project only
Leukosphenit

Kristallgröße: 1,4 mm, Fundort: Poudrette quarry, Mont Saint-Hilaire, Rouville Co., Québec, Kanada
Copyright: Jason B. Smith
Contribution: thdun5 2010-06-05
Locality: Poudrette Quarry (Demix Quarry; Uni-Mix Quarry; Desourdy Quarry) / Mont Saint-Hilaire / La Vallée-du-Richelieu RCM / Montérégie, Region / Québec, Provinz / Kanada
Leukosphenit
Views (File:
1643306656
): 80
Leukosphenit
Leukosphenit gelblich BB 0,9 mm Brasilien/Südosten (Região Sudeste)/Minas Gerais/Ouro Preto/Rodrigo Silva/Boa Vista
Copyright: Hannes Osterhammer; Contribution: anatase2
Collection: anatase2, Collection number: 423
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Ouro Preto/Rodrigo Silva/Boa Vista
Mineral: Leucosphenite
Image: 1643306656
License: Usage for Mineralienatlas project only
Leukosphenit (SNr: 423)

Leukosphenit gelblich BB 0,9 mm Brasilien/Südosten (Região Sudeste)/Minas Gerais/Ouro Preto/Rodrigo Silva/Boa Vista
Collection: anatase2
Copyright: Hannes Osterhammer
Contribution: anatase2 2022-01-27
Locality: Boa Vista / Rodrigo Silva / Ouro Preto / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color farblos, zitronengelb, braun, blassblau
Streak color weiß
Hardness (Mohs) 6.5
Solubility +++ HF
Crystal System monoklin, C2/m

Chemism

Chemical formula

BaNa4Ti2B2Si10O30

Chemical composition

Barium, Natrium, Silicium, Titan, Bor, Sauerstoff

Unit weight: 1107.4825808 u; Number of atoms in the formula: 49

Info

Empirical formula:

BaNa4Ti2B2Si10O30

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Boron

B

1.95

2

4.08

10.8117000

21.6234000
Oxygen

O

43.34

30

61.22

15.9994300

479.9829000
Sodium

Na

8.30

4

8.16

22.9897702

91.9590808
Silicon

Si

25.36

10

20.41

28.0855300

280.8553000
Titanium

Ti

8.64

2

4.08

47.8671000

95.7342000
Barium

Ba

12.40

1

2.04

137.3277000

137.3277000

Analysis wt%

SiO2 : 54.30, TiO2 : 13.92, B2O3 : 6.36, BaO : 13.00, Na2O : 10.70, K2O : 0.79 (Ref: American Mineralogist 72)

Strunz 9th edition incl. updates

9.DP.15

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
P: Übergangsstrukturen: Ketten- und Bandsilikate - Schichtsilikat
15:Leukosphenit-Gruppe

Lapis Classification

VIII/G.10-010

VIII: SILIKATE
G: Übergangsstrukturen zwischen Ketten- und Schichtsilikaten

Classification by Hölzel

9.DU.460

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
U: Chains to Phyllosilicates
4: Laplandite-Group

Dana 8th edition

72.05.02.01

72: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
05: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with corrugated and complex layers
02: Leucospenite and related species

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, zitronengelb, braun, blassblau

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.043
Birefringence chart\! Leucosphenite title=Birefringence chart Leucosphenite

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

1.645

RI value β

1.661

RI value γ / ε

1.688

Ri mean

1.665

2V angle

Biaxial (+) 77°

Optical Data Luminescence

Luminescence

fluoreszierend, Kurzwelliges UV=gelblich weiß

Color SW-UV (254nm)

  

blau

SW-UV Intensity

stark

LW-UV Other Colors

  

gelblich weiß

SW-UV Other Colors

  

gelb

Most Common Activator

TiO6

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)

9.799

Cell parameters b (Å)

16.840

Cell parameters c (Å)

7.199

Cell parameters a/b or c/a

0.582

Cell parameters c/b

0.427

Cell parameters α

90°

Cell parameters β

93.37

Cell parameters γ

90°

Z

2

Volume (ų)

1185.89

X-Ray Powder Diffraction

8.45(90),
4.222(100),
3.569(30),
3.371(70),
3.306(50),
3.250(30),
3.189(30),
2.891(60)
XRD chart Leucosphenite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6.5

VHN (Hardness Vickers)

960 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3 - 3.09 / Durchschnittlich = 3.04

3.101 ( ρ calc. Mineralienatlas )

Instability

+++ HF

(Co-)Type locality

(Co-)Type locality

Grönland/Qaasuitsup Kommunia/Narsaarsuk (Narssârssuk)/Narssârssuk-Pegmatit

Preface

Author (Name, Year)

Flink, 1901

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 465

Other languages

Spanish

Leucosfenita

French

Leucosphenite

English

Leucosphenite

German

Leukosphenit

Russian

Лейкосфенит

Traditional Chinese

淡鋇鈦石

Simplified Chinese

淡钡钛石

Alternative Name

Leucosphenit

Leucosphenita

Unnamed (MSH UK-8)

CNMNC symbol

Symbol

Lsp

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Y3aZxJ7QVUGfC6K6lN9Kjw
GUID (Global unique identifier) C4997663-D09E-4155-9F0B-A2BA94DF4A8F
Database ID 2196