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Stilpnomelane (Stilpnomelan)

Pictures (12 Images total)

Stilpnomelan
Views (File:
1192558630
): 4819
Stilpnomelan
Stilpnomelan von Laytonville Quarry, bei Laytonville, Mendocino Co., Kalifornien, USA; Bildausschnitt etwa 5 x 2 cm; rotbraune Blättchen in Quarz
Copyright: rtbstone; Contribution: rtbstone
Collection: rtbstone
Location: USA/Kalifornien (California)/Mendocino Co./Laytonville/Laytonville Quarry
Mineral: Stilpnomelane
Image: 1192558630
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Stilpnomelan

Stilpnomelan von Laytonville Quarry, bei Laytonville, Mendocino Co., Kalifornien, USA; Bildausschnitt etwa 5 x 2 cm; rotbraune Blättchen in Quarz
Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2007-10-16
Locality: Laytonville Quarry / Laytonville / Mendocino Co. / Kalifornien (California) / USA
Stilpnomelan on quartz
Views (File:
1288888950
): 3894
Stilpnomelan on quartz
landsverk 1 (jokelid) evje norwegen 3/9-10; Gold coloured stilmpnomelan on 2mm quartz xxls.
Copyright: kryso; Contribution: kryso
Collection: kryso
Location: Norwegen/Agder, Provinz/Setesdal/Evje og Hornnes/Landsverk/Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine)
Mineral: Stilpnomelane
Image: 1288888950
Rating: 6 (votes: 2)
License: Usage for Mineralienatlas project only
Stilpnomelan on quartz

landsverk 1 (jokelid) evje norwegen 3/9-10; Gold coloured stilmpnomelan on 2mm quartz xxls.
Collection: kryso
Copyright: kryso
Contribution: kryso 2010-11-04
Locality: Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine) / Landsverk / Evje og Hornnes / Setesdal / Agder, Provinz / Norwegen
Stilpnomelan
Views (File:
1158089704
): 4339
Stilpnomelan
Fundort: Bellsgrove Mine, Strontian, North West Highlands (Argyllshire), Schottland, UK; Größe: Länge der Kristallplättchen bis 2 mm
Copyright: Torben; Contribution: Torben
Location: UK/Schottland/Highland/Strontian/Bellsgrove Mine
Mineral: Stilpnomelane
Image: 1158089704
Rating: 5.33 (votes: 3)
License: Usage for Mineralienatlas project only
Stilpnomelan

Fundort: Bellsgrove Mine, Strontian, North West Highlands (Argyllshire), Schottland, UK; Größe: Länge der Kristallplättchen bis 2 mm

Copyright: Torben
Contribution: Torben 2006-09-12
Locality: Bellsgrove Mine / Strontian / Highland / Schottland / UK
Stilpnomelan
Views (File:
1307127851
): 3582
Stilpnomelan
Braune blättrige Kristalle auf Epidot und Albit, gefunden 2010, BB = 7,1 mm. Fundort: Landsverk 1,Evje og Hornnes,Aust Agder,Norwegen.
Copyright: Hannes Osterhammer; Contribution: Manfred Früchtl
Collection: Ludwig Siebler
Location: Norwegen/Agder, Provinz/Setesdal/Evje og Hornnes/Landsverk/Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine)
Mineral: Stilpnomelane
Encyclopedia: SammlerSteckbriefe/Münchener Micromounter/Ludwig Siebler
Image: 1307127851
License: Usage for Mineralienatlas project only
Stilpnomelan

Braune blättrige Kristalle auf Epidot und Albit, gefunden 2010, BB = 7,1 mm. Fundort: Landsverk 1,Evje og Hornnes,Aust Agder,Norwegen.
Collection: Ludwig Siebler
Copyright: Hannes Osterhammer
Contribution: Manfred Früchtl 2011-06-03
Locality: Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine) / Landsverk / Evje og Hornnes / Setesdal / Agder, Provinz / Norwegen
Stilpnomelan
Views (File:
1307128106
): 2704
Stilpnomelan
Braune blättrige Kristalle auf Albit, gefunden 2010, BB = 8,5 mm. Fundort: Landsverk 1,Evje og Hornnes,Aust Agder,Norwegen.
Copyright: Hannes Osterhammer; Contribution: Manfred Früchtl
Collection: Ludwig Siebler
Location: Norwegen/Agder, Provinz/Setesdal/Evje og Hornnes/Landsverk/Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine)
Mineral: Stilpnomelane
Encyclopedia: SammlerSteckbriefe/Münchener Micromounter/Ludwig Siebler
Image: 1307128106
License: Usage for Mineralienatlas project only
Stilpnomelan

Braune blättrige Kristalle auf Albit, gefunden 2010, BB = 8,5 mm. Fundort: Landsverk 1,Evje og Hornnes,Aust Agder,Norwegen.
Collection: Ludwig Siebler
Copyright: Hannes Osterhammer
Contribution: Manfred Früchtl 2011-06-03
Locality: Landsverk 1 (Landsverk Feldspatmine; Jokeli Mine) / Landsverk / Evje og Hornnes / Setesdal / Agder, Provinz / Norwegen
Stilpnomelan
Views (File:
1360928213
): 868
Stilpnomelan
Winzige braune Stilpnomelan-Blättchen. Spatgrube Cornelia, Hagendorf-Süd, Oberpfalz, bayern, Deutschland.
Copyright: raritätenjäger; Contribution: raritätenjäger
Collection: raritätenjäger
Location: Deutschland/Bayern/Oberpfalz, Bezirk/Neustadt an der Waldnaab, Landkreis/Waidhaus/Hagendorf/Hagendorf-Süd (Grube Cornelia)
Mineral: Stilpnomelane
Image: 1360928213
License: Usage for Mineralienatlas project only
Stilpnomelan

Winzige braune Stilpnomelan-Blättchen. Spatgrube Cornelia, Hagendorf-Süd, Oberpfalz, bayern, Deutschland.
Collection: raritätenjäger
Copyright: raritätenjäger
Contribution: raritätenjäger 2013-02-15
Locality: Hagendorf-Süd (Grube Cornelia) / Hagendorf / Waidhaus / Neustadt an der Waldnaab, Landkreis / Oberpfalz, Bezirk / Bayern / Deutschland

You find additional Stilpnomelan specimen at the Geolitho Museum

Collectors Summary

Color braun rot, grün, goldbraun, schwarz
Streak color grauweiß
Hardness (Mohs) 3.5
Solubility +++ HF, HCl
Crystal System triklin, P1

Chemism

Chemical formula

K(Fe2+,Mg,Fe3+,Al)8(Si,Al)12(O,OH)27·2H2O

Chemical composition

Aluminium, Eisen, Magnesium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1207.15139413 u; Number of atoms in the formula: 60.75

Info

Empirical formula:

K(Fe0.55Mg0.3Fe0.1Al0.05)8(Si0.75Al0.25)12(O0.75(OH)0.25)27·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.90

10.75

17.70

1.0079470

10.8354303
Oxygen

O

38.44

29

47.74

15.9994300

463.9834700
Magnesium

Mg

4.83

2.4

3.95

24.3050600

58.3321440
Aluminium

Al

7.60

3.4

5.60

26.9815382

91.7372299
Silicon

Si

20.94

9

14.81

28.0855300

252.7697700
Potassium

K

3.24

1

1.65

39.0983100

39.0983100
Iron

Fe

24.06

5.2

8.56

55.8452000

290.3950400

Analysis wt%

SiO2 : 46.66, Al2O3 : 5.39, Fe2O3 : 8.01, FeO : 24.82, MnO : 0.58, MgO : 3.91, CaO : 0.46, K2O : 1.84, H2O : 8.40 (Ref: American Mineralogist 65)

Strunz 9th edition incl. updates

9.EG.40

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
G: Doppelnetze mit sechsfach-Ringen
40:Stilpnomelan-Gruppe

Lapis Classification

VIII/H.17-040

VIII: SILIKATE
H: Schichtsilikate
17: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen;

Classification by Hölzel

9.EF.100

9: SILICATES
E: Phyllosilicates
F: Other Micas without H2O
1: Triclinic Stilpnomelane-Group

Dana 8th edition

74.01.01.01

74: Phyllosilicates Phyllosilicate Modulated Layers
01: Phyllosilicates Phyllosilicate Modulated Layers with joined islands
01: Stilpnomelane group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

braun rot, grün, goldbraun, schwarz

Streak color

grauweiß

Diaphaneity (Transparency)

teilweise durchscheinend bis opak

max. Birefringence

0.112
Birefringence chart\! Stilpnomelane title=Birefringence chart Stilpnomelane

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

1.623

RI value β

1.735

RI value γ / ε

1.735

Ri mean

1.698

2V angle

Biaxial (-) 0°~

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

21.724

Cell parameters b (Å)

21.724

Cell parameters c (Å)

17.740

Cell parameters a/b or c/a

1.000

Cell parameters c/b

0.817

Cell parameters α

124.13

Cell parameters β

95.85

Cell parameters γ

120.0

Z

6

Volumne (ų)

5076.145

X-Ray Powder Diffraction

12.1(100),
4.039(80),
3.027(70),
2.715(40),
2.570(100),
2.350(70),
1.585(60),
1.571(50)
XRD chart Stilpnomelane

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.5

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.77 - 2.96 / Durchschnittlich = 2.86

2.369 ( ρ calc. Mineralienatlas )

Instability

+++ HF, HCl

(Co-)Type locality

(Co-)Type locality

Tschechien/Olmütz (Olomoucky Kraj)/Freiwaldau (Jesenik), Bezirk/Zuckmantel (Zlaté Hory)/Obergrund (Horni Udolí)

Preface

Author (Name, Year)

Glocker, 1827

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 756

Varieties

Ferristilpnomelane

Other languages

Spanish

Estilpnomelana

German

Stilpnomelan

English

Stilpnomelane

French

Stilpnomelane

Russian

Стильпномелан

Traditional Chinese

黑硬綠泥石

Simplified Chinese

黑硬绿泥石

Japanese

ｽﾁﾙﾌﾟﾉﾒﾚﾝ鉱

Alternative Name

English

Chalcodite

Chrysobiotite

Ferrostilpnomelane

Manganoan Stilpnomelane

English

Minguettite

Minguétit

Minguétita

Italian

Minguétita

Minguétite

CNMNC symbol

Symbol

Stp

Locations with GPS information