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Staurolite

Pictures (75 Images total)

Staurolith
Views (File:
1222501425
): 12460, Rating: 9.14
Staurolith
Fundort: Sahatany-Pegmatit, Provinz Antananarivo, Madagaskar; Größe: 17 x 13 mm
Copyright: John Sobolewski; Contribution: Philip Blümner
Location: Madagaskar/Vàkinankàratra, Region/Sahatany-Pegmatitfeld
Mineral: Staurolite
Image: 1222501425
Rating: 9.14 (votes: 7)
License: Usage for Mineralienatlas project only
Staurolith

Fundort: Sahatany-Pegmatit, Provinz Antananarivo, Madagaskar; Größe: 17 x 13 mm
Copyright: John Sobolewski
Contribution: Philip Blümner 2008-09-27
Locality: Sahatany-Pegmatitfeld / Vàkinankàratra, Region / Madagaskar
Staurolith
Views (File:
1276445601
): 7324
Staurolith
Größe: 13x11 mm; Fundort: Hondo Canyon District, Taos Co., New Mexico, USA
Copyright: John Sobolewski; Contribution: Philip Blümner
Location: USA/New Mexico/Taos Co./Hondo Canyon District
Mineral: Staurolite
Image: 1276445601
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Staurolith

Größe: 13x11 mm; Fundort: Hondo Canyon District, Taos Co., New Mexico, USA
Copyright: John Sobolewski
Contribution: Philip Blümner 2010-06-13
Locality: Hondo Canyon District / Taos Co. / New Mexico / USA
Staurolith
Views (File:
1360800055
): 5779
Staurolith
Größe: 4 x 4 cm, Fundort: Pestsovye Keivy, Keivy-Massiv, Kola-Halbinsel, Murmansk, Russland
Copyright: Michael Roarke; Contribution: thdun5
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Keivy-Massiv/Pestsovye Keivy
Mineral: Staurolite
Image: 1360800055
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Staurolith

Größe: 4 x 4 cm, Fundort: Pestsovye Keivy, Keivy-Massiv, Kola-Halbinsel, Murmansk, Russland
Copyright: Michael Roarke
Contribution: thdun5 2013-02-14
Locality: Pestsovye Keivy / Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Staurolith, Zwilling
Views (File:
1679983100
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Staurolith, Zwilling
Etwa 30 mm x 27 mm großer Staurolith-Zwilling von Okahandja in Namibia.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Stauro-2-1-2
Location: Namibia/Otjozondjupa, Region/Okahandja, Kreis/Okahandja
Mineral: Staurolite
Image: 1679983100
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Staurolith, Zwilling (SNr: SyS-Stauro-2-1-2)

Etwa 30 mm x 27 mm großer Staurolith-Zwilling von Okahandja in Namibia.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2023-03-28
Locality: Okahandja / Okahandja, Kreis / Otjozondjupa, Region / Namibia
Staurolith
Views (File:
1222501065
): 11117, Rating: 8
Staurolith
Fundort: Sahatany-Pegmatit, Provinz Antananarivo, Madagaskar; Größe: 15 x 15 mm
Copyright: John Sobolewski; Contribution: Philip Blümner
Location: Madagaskar/Vàkinankàratra, Region/Sahatany-Pegmatitfeld
Mineral: Staurolite
Image: 1222501065
Rating: 8 (votes: 5)
License: Usage for Mineralienatlas project only
Staurolith

Fundort: Sahatany-Pegmatit, Provinz Antananarivo, Madagaskar; Größe: 15 x 15 mm
Copyright: John Sobolewski
Contribution: Philip Blümner 2008-09-27
Locality: Sahatany-Pegmatitfeld / Vàkinankàratra, Region / Madagaskar

You find additional specimen at the Geolitho Museum

Collectors Summary

Color rötlichbraun, braungelb, bräunlichschwarz
Streak color weiß
Lustre Glasglanz - Matt
Hardness (Mohs) 7.00 - 7.50
Solubility + HF, H2SO4
Crystal System monoklin, C2/m
Morphology Kristalle über 3 mm Größe bekannt

Chemism

Chemical formula

(Fe2+,Mg,Zn)2Al9(Si,Al)4O22(OH)2

Chemical composition

Aluminium, Eisen, Magnesium, Silicium, Zink, Sauerstoff, Wasserstoff

Unit weight: 834.753342 u; Number of atoms in the formula: 41

Info

Empirical formula:

(Fe0.6Mg0.3Zn0.1)2Al9(Si0.75Al0.25)4O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.24

2

4.88

1.0079470

2.0158940
Oxygen

O

46.00

24

58.54

15.9994300

383.9863200
Magnesium

Mg

1.75

0.6

1.46

24.3050600

14.5830360
Aluminium

Al

32.32

10

24.39

26.9815382

269.8153820
Silicon

Si

10.09

3

7.32

28.0855300

84.2565900
Iron

Fe

8.03

1.2

2.93

55.8452000

67.0142400
Zinc

Zn

1.57

0.2

0.49

65.4094000

13.0818800

Strunz 9th edition incl. updates

9.AF.30

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
F: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in [4], [5] und/oder nur [6] Koordination
30:Staurolith-Gruppe

Lapis Classification

VIII/B.03-010

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
3: Kationen in tetraedrischer oder oktaedrischer Koordination [4/6]

Classification by Hölzel

9.AH.100

9: SILICATES
A: Nesosilicates
H: Nesosilicates with O + (OH, OH,X, X)
1: C small; Staurolite-Chloritoid-Group

Dana 8th edition

52.02.03.01

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
02: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

rötlichbraun, braungelb, bräunlichschwarz

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend bis opak

Lustre

Glasglanz - Matt

max. Birefringence

0.013
Birefringence chart\! Staurolite title=Birefringence chart Staurolite

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

1.744

RI value β

1.749

RI value γ / ε

1.757

Ri mean

1.750

2V angle

Biaxial (+) 86°~

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)

7.865

Cell parameters b (Å)

16.580

Cell parameters c (Å)

5.668

Cell parameters a/b or c/a

0.474

Cell parameters c/b

0.342

Cell parameters α

90°

Cell parameters β

90.38

Cell parameters γ

90°

Z

2

Volume (ų)

739.101

X-Ray Powder Diffraction

4.154(20),
3.012(30),
2.770(80),
2.694(40),
2.402(50),
2.371(40),
1.982(50),
1.968(100)
XRD chart Staurolite

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

Morphology

Kristalle über 3 mm Größe bekannt

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

7.00 - 7.50

VHN (Hardness Vickers)

1450 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.65 - 3.77 / Durchschnittlich = 3.71

3.751 ( ρ calc. Mineralienatlas )

Instability

+ HF, H2SO4

Preface

Occurrences

In metamorphen Gesteinen (besonders Schiefer), Gneis.

Name from

dem griechischen stauros - Kreuz und lithos - Stein

Author (Name, Year)

Bergman, 1782 / Delamétherie, 1792

Collector information

Ausgezeichnete Kristalle aus der Bretagne, Sierra Guadarrama (Spanien), Pizzo Forno, Tessin (Schweiz) und von der Kola-Halbinsel (Russland)

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 749

Levskii, L.K. & Lobikov, A.F.: Staurolite as an isotopic U–Pb geochronometer. Geology of Ore Deposits Jhrg. 58, Nr. 7 (2016) S.517–524.

Other languages

Spanish

Estaurolita

Dutch

Stauroliet

Finnish

Stauroliitti

Croatian

Staurolit

Hungarian

Staurolit

Polish

Staurolit

Lithuanian

Staurolitas

French

Staurolite

English

Staurolite

German

Staurolith

French

Staurotide

Russian

Ставролит

Hebrew

סטאורוליט

Alternative Name

German

Baseler Taufstein

Croisette

Fairy Stone

German

Granatit (Mineral)

Begriff aus dem 19. Jh.

German

Lusakit

Spanish

Lusakita

Lusakite

Staurolita

Japanese

十字石

CNMNC symbol

Symbol

St

Rock part of

Locations with GPS information

IDs

GUSID (Global unique identifier short form) l1dQaN_01Ean8Vndw_mu9A
GUID (Global unique identifier) 68505797-F4DF-46D4-A7F1-59DDC3F9AEF4
Database ID 3612