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Staurolite (Staurolith)

Pictures (57 Images total)

Staurolith
Views (Image: 1222501425): 12122, Rating: 9.14
Staurolith

Fundort: Sahatany-Pegmatit, Provinz Antananarivo, Madagaskar; Größe: 17 x 13 mm

Copyright: John Sobolewski
Contribution: slugslayer 2008-09-27
Locality: Sahatany-Pegmatitfeld / Vàkinankàratra, Region / Madagaskar
Staurolith
Views (Image: 1276445601): 6993
Staurolith

Größe: 13x11 mm; Fundort: Hondo Canyon District, Taos Co., New Mexico, USA

Copyright: John Sobolewski
Contribution: slugslayer 2010-06-13
Locality: Hondo Canyon District / Taos Co. / New Mexico / USA
Staurolith
Views (Image: 1360800055): 5499
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
Views (Image: 1222501065): 10656, Rating: 8
Staurolith

Fundort: Sahatany-Pegmatit, Provinz Antananarivo, Madagaskar; Größe: 15 x 15 mm

Copyright: John Sobolewski
Contribution: slugslayer 2008-09-27
Locality: Sahatany-Pegmatitfeld / Vàkinankàratra, Region / Madagaskar
Staurolith
Views (Image: 1206367554): 8162
Staurolith  D

Fundort: Keivy, HI-Kola, Russland; Größe: 5 x 4,3 cm

Collection: Mineralroli
Copyright: Mineralroli
Contribution: Mineralroli 2008-03-24
Locality: Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Staurolith
Views (Image: 1360800238): 945
Staurolith

Größe: 7,5 x 6,5 x 2,5 cm, Fundort: Pestsovye Keivy, Keivy-Massiv, Kola-Halbinsel, Murmansk, Russland

Copyright: Rob Lavinsky
Contribution: thdun5 2013-02-14
Locality: Pestsovye Keivy / Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

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

Volumne (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

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Hint

- Essential mineral - Important for the classification of the rock.
- Accessory or non-essential mineral - this minerals are common, sometimes major part of, but are not always present.

Actuality: 01. Jul 2022 - 09:42:26

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

German pages

DeWikiPedia - search for: Staurolith
Google-Bilder-Suche - search for: Staurolith
Mineralienatlas.de (Forum) - search for: Staurolith

English pages

Mindat - search for: Staurolite
Webmineral - search for:Staurolite
Handbook-of-Mineralogy - search for: Staurolite
RRUFF - Raman, XRD and other mineral data - search for: Staurolite
RRUFF - References and PDF downloads - search for: Staurolite
American-Mineralogist-Crystal-Structure-Database - search for: Staurolite
Strahlen.org - search for: Staurolite

Russian pages

Webmineral.ru - search for: Ставролит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Staurolith
Crystal-Treasure.com - search for: Staurolith
Bosse - search for: Staurolith
Edelsteine Neuburg - Gundolf Fischer - search for: Staurolith

Locations with GPS information