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Schorl

Pictures (637 Images total)

Schörl
Views (File:
1467461540
): 19430
Schörl
Bildbreite etwa 9 mm; prismatische Schörl-Kristalle aus dem Furkabasis-Tunnel, Wallis, Schweiz.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: FuBa-Schörl-1-1-2
Location: Schweiz/Wallis, Kanton/Goms, Bezirk/Obergoms/Oberwald/Furka-Basistunnel (Westabschnitt)
Mineral: Schorl, Tourmaline supergroup
Image: 1467461540
Rating: 9.67 (votes: 3)
License: Usage for Mineralienatlas project only
Schörl (SNr: FuBa-Schörl-1-1-2)

Bildbreite etwa 9 mm; prismatische Schörl-Kristalle aus dem Furkabasis-Tunnel, Wallis, Schweiz.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2016-07-02
Locality: Furka-Basistunnel (Westabschnitt) / Oberwald / Obergoms / Goms, Bezirk / Wallis, Kanton / Schweiz
Schorl
Views (File:
1513062261
): 5013
Schorl
Aesthetic schorl specimen, from Erongo Mountain, Erongo Region, Namibia; Size 107 х 90 х 80 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Namibia/Erongo, Region
Mineral: Schorl
Image: 1513062261
Rating: 10 (votes: 2)
License: Usage for Mineralienatlas project only
Schorl

Aesthetic schorl specimen, from Erongo Mountain, Erongo Region, Namibia; Size 107 х 90 х 80 mm
Copyright: pegmatite
Contribution: pegmatite 2017-12-12
Locality: Erongo, Region / Namibia
Schorl
Views (File:
1596698676
): 1257
Schorl
Perfect quality, finished all around, schorl specimen, from Ambatosoratra pegmatite, Ambatosoratra Commune, Ambatondrazaka District, Alaotra-Mangoro Region, Toamasina Province, Madagascar; Dimensions: 48 mm x 42 mm x 33 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Madagaskar/Alaotra-Mangoro, Region/Ambatondrazaka, Distrikt/Ambatosoratra/Ambatosoratra-Pegmatit
Mineral: Schorl
Image: 1596698676
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Schorl

Perfect quality, finished all around, schorl specimen, from Ambatosoratra pegmatite, Ambatosoratra Commune, Ambatondrazaka District, Alaotra-Mangoro Region, Toamasina Province, Madagascar; Dimensio...
Copyright: pegmatite
Contribution: pegmatite 2020-08-06
Locality: Ambatosoratra-Pegmatit / Ambatosoratra / Ambatondrazaka, Distrikt / Alaotra-Mangoro, Region / Madagaskar
Schorl
Views (File:
1596438935
): 1838
Schorl
Perfect quality, finished all around, schorl specimen, from Ambatosoratra pegmatite, Ambatosoratra Commune, Ambatondrazaka District, Alaotra-Mangoro Region, Toamasina Province, Madagascar; Dimensions: 50 mm x 37 mm x 27 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Madagaskar/Alaotra-Mangoro, Region/Ambatondrazaka, Distrikt/Ambatosoratra/Ambatosoratra-Pegmatit
Mineral: Schorl
Image: 1596438935
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Schorl

Perfect quality, finished all around, schorl specimen, from Ambatosoratra pegmatite, Ambatosoratra Commune, Ambatondrazaka District, Alaotra-Mangoro Region, Toamasina Province, Madagascar; Dimensio...
Copyright: pegmatite
Contribution: pegmatite 2020-08-03
Locality: Ambatosoratra-Pegmatit / Ambatosoratra / Ambatondrazaka, Distrikt / Alaotra-Mangoro, Region / Madagaskar
Schorl with Albite
Views (File:
1676970827
): 171
Schorl with Albite
Perfect quality, finished all around specimen of Schorl with Albite, from Erongo Mountains, Erongo Region, Namibia; Dimensions: 42 mm x 24 mm x 19 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Namibia/Erongo, Region
Mineral: Schorl
Image: 1676970827
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Schorl with Albite

Perfect quality, finished all around specimen of Schorl with Albite, from Erongo Mountains, Erongo Region, Namibia; Dimensions: 42 mm x 24 mm x 19 mm
Copyright: pegmatite
Contribution: pegmatite 2023-02-21
Locality: Erongo, Region / Namibia

You find additional specimen at the Geolitho Museum

Collectors Summary

Color schwarz, im Dünnschliff farbige Muster, schwarzbraun, schwarzblau, schwarzgrün
Streak color grauweiß bis blauweiß
Lustre Glasglanz
Hardness (Mohs) 7
Solubility + HF, - Säuren
Crystal System trigonal, R3m

Additional information / Summary

Als Schörl wird der auf den ersten Blick "schwarze" Turmalin bezeichnet.

Chemism

Chemical formula

NaFe2+3Al6(BO3)3Si6O18(OH)4

Chemical composition

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

Unit weight: 1053.3769974 u; Number of atoms in the formula: 54

Info

Empirical formula:

NaFe3Al6(BO3)3Si6O18(OH)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.38

4

7.41

1.0079470

4.0317880
Boron

B

3.08

3

5.56

10.8117000

32.4351000
Oxygen

O

47.08

31

57.41

15.9994300

495.9823300
Sodium

Na

2.18

1

1.85

22.9897702

22.9897702
Aluminium

Al

15.37

6

11.11

26.9815382

161.8892292
Silicon

Si

16.00

6

11.11

28.0855300

168.5131800
Iron

Fe

15.90

3

5.56

55.8452000

167.5356000

Analysis wt%

SiO2 : 33.78, TiO2 : 0.41, B2O3 : 10.70, Al2O3 : 33.80, FeO : 15.11, MgO : 0.74, Na2O : 1.92, F : 0.98, H2O : 2.41 (Ref: Rock Forming Minerals 86)

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.19-050

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

Classification by Hölzel

9.CE.210

9: SILICATES
C: Cyclosilicates
E: Tourmaline-Group
2: Alkali Tourmalines with V3 W = (OH)3 F or O3 F or (OH)3 O

Dana 8th edition

61.03e.01.10

61: Cyclosilicates Cyclosilicate Six-Membered Rings
03e: Cyclosilicates Cyclosilicate Six-Membered Rings with borate groups (Sodic Tourmaline Subgroup)
01: Schorl Subgroup

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Tourmaline supergroup  ⇒ Alkali-Tourmaline group  ⇒ Tourmaline Alkali-subgroup 1

Optical Properties

Color

schwarz, im Dünnschliff farbige Muster, schwarzbraun, schwarzblau, schwarzgrün

Streak color

grauweiß bis blauweiß

Diaphaneity (Transparency)

im Dünnschliff transparent

Lustre

Glasglanz

max. Birefringence

0.026
Birefringence chart\! Schorl title=Birefringence chart Schorl

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

1.668

RI value γ / ε

1.642

Ri mean

1.659

2V angle

Uniaxial (-)

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

160

Space Group

R3m

Cell parameters a (Å)

15.980

Cell parameters b (Å)

-

Cell parameters c (Å)

7.150

Cell parameters a/b or c/a

0.447

Cell parameters c/b

-

Z

3

Volume (ų)

1581.212

X-Ray Powder Diffraction

6.36(20),
4.22(40),
3.99(60),
3.462(40),
2.952(40),
2.581(100),
2.041(30),
1.920(20)
XRD chart Schorl

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)

7

VHN (Hardness Vickers)

1300 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.18-3.22

3.318 ( ρ calc. Mineralienatlas )

Radioactivity

fehlt

Instability

+ HF, - Säuren

(Co-)Type locality

(Co-)Type locality

Deutschland/Sachsen/Erzgebirgskreis/Schneeberg, Lagerstätte/Zschorlau

Preface

Occurrences

Pegmatite

Associations

Albit, Quarz, Beryll (Aquamarin), Orthoklas

Rareness

häufig

Name from

Nach A. Ertl, Über die Etymologie und die Typlokalitäten des Minerals Schörl. Mitteilungen der Österreichischen Mineralogischen Gesellschaft 152 (2006) 7-16, abgeleitet von der Ortschaft Schorl, auch Schorlau, heute Zschorlau. Nach IMA-CNMNC daher Schorl

Author (Name, Year)

Matthesius, 1524

Additional Information

enthält oft Mn, Mg, Ca, Li, Cr, Ti, F, K

Detailed description

Turmalin im im Querschnitt

Bei der Prüfung willkürlicher Schörl-Kristalle kam heraus, dass alle Schörle im Schnitt oder erst im Dünnschliff (1/10 bis 1/50 mm) farbig werden und symmetrische Muster zeigen. Man könnte sagen, dass es schwarzen Turmalin nicht gibt.

siehe > Turmalin

References

Canadian Mineralogist 13 (1975), 173-177.

American Mineralogist 74 (1989), 422-431.

Powder Diffraction 5 (1990), 213.

Neues Jahrbuch für Mineralogie, Abhandlungen 165 (1993), 245.

European Journal of Mineralogy 11 (1999), 217.

American Mineralogist 84 (1999), 922.

Mineralogy and Petrology 75 (2002), 69.

European Journal of Mineralogy 16 (2004), 335-344.

American Mineralogist 90 (2005), 1784.

Ertl, A. Über die Etymologie und die Typlokalitäten des Minerals Schörl. Mitteilungen der Österreichischen Mineralogischen Gesellschaft (2006) 152, 7–16 Min Abs. [06M/3855].

Ferdinando Bosi, Giovanni B. Andreozzi, Ulf Hålenius AND Henrik Skogby - Experimental evidence for partial Fe2+ disorder at the Y and Z sites of tourmaline: a combined EMP, SREF, MS, IR and OAS study of schorl - Mineralogical Magazine, June 2015, Vol. 79(3), pp. 515–528

http://tw.strahlen.org/typloc/schoerl.html

IMA group assignments

Other languages

English

Schorl

Spanish

Schorl

French

Schorl

German

Schörl

Russian

Шерл

Japanese

鉄電気石

Alternative Name

Spanish

Afrisita

Afrisite

German

Aphricit

Cockle

Schirl

Schorlite (of Hunt)

Shirl

Shorl

Simplified Chinese

铁电气石

Simplified Chinese

黑电气石

CNMNC symbol

Symbol

Srl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) -btdYD6x10mmqOB15RS-wg
GUID (Global unique identifier) 605DBBF9-B13E-49D7-A6A8-E075E514BEC2
Database ID 3413