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Geocronite

Pictures (17 Images total)

Geokronit x
Views (File:
1187110348
): 2120
Geokronit x
Bildbreite: 2 mm; Fundort: Fantiscritti-Steinbruch, Carrara, Apuanische Alpen, Massa-Carrara-Bezirk, Toskana, Italien
Copyright: Stephan Wolfsried; Contribution: Philip Blümner
Location: Italien/Toskana (Toscana)/Massa-Carrara, Provinz/Carrara/Miseglia-Fantiscritti Basin/Cava di Fantiscritti
Mineral: Geocronite
Image: 1187110348
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Geokronit x

Bildbreite: 2 mm; Fundort: Fantiscritti-Steinbruch, Carrara, Apuanische Alpen, Massa-Carrara-Bezirk, Toskana, Italien

Copyright: Stephan Wolfsried
Contribution: Philip Blümner 2007-08-14
Locality: Cava di Fantiscritti / Miseglia-Fantiscritti Basin / Carrara / Massa-Carrara, Provinz / Toskana (Toscana) / Italien
Geokronit xx
Views (File:
1389978778
): 1589
Geokronit xx
Geokronitxx BB ca 0,3 mm, Fundort: Borgofranco d'Ivrea, Turin (Torino), Provinz, Piemont (Piemonte), Region, Italien
Copyright: derhesse; Contribution: derhesse
Collection: anatase2
Location: Italien/Piemont (Piemonte), Region/Turin (Torino), Provinz/Borgofranco d'Ivrea/Biò/Miniere di Borgofranco
Mineral: Geocronite
Image: 1389978778
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Geokronit xx

Geokronitxx BB ca 0,3 mm, Fundort: Borgofranco d'Ivrea, Turin (Torino), Provinz, Piemont (Piemonte), Region, Italien

Collection: anatase2
Copyright: derhesse
Contribution: derhesse 2014-01-17
Locality: Miniere di Borgofranco / Biò / Borgofranco d'Ivrea / Turin (Torino), Provinz / Piemont (Piemonte), Region / Italien
Geokronit
Views (File:
1284461109
): 1553
Geokronit
Grube Bayerland, Waldsassen, Oberpfalz, Bayern. L:24cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Museum Wunsiedel
Location: Deutschland/Bayern/Oberpfalz, Bezirk/Tirschenreuth, Landkreis/Leonberg/Pfaffenreuth/Grube Bayerland
Mineral: Geocronite
Image: 1284461109
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Geokronit

Grube Bayerland, Waldsassen, Oberpfalz, Bayern. L:24cm.

Collection: Museum Wunsiedel
Copyright: Doc Diether
Contribution: Doc Diether 2010-09-14
Locality: Grube Bayerland / Pfaffenreuth / Leonberg / Tirschenreuth, Landkreis / Oberpfalz, Bezirk / Bayern / Deutschland
Geokronit
Views (File:
1392886709
): 1020
Geokronit
Bildbreite: 1,2 mm; Fundort: Silver Tunnel, Van Silver Mine, Brandywine Creek, British Columbia, Kanada
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Kanada/British Columbia/Vancouver Mining Division/Brandywine Creek/Van Silver Property/Silver Tunnel
Mineral: Geocronite
Image: 1392886709
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Geokronit

Bildbreite: 1,2 mm; Fundort: Silver Tunnel, Van Silver Mine, Brandywine Creek, British Columbia, Kanada

Copyright: Stephan Wolfsried
Contribution: Hg 2014-02-20
Locality: Silver Tunnel / Van Silver Property / Brandywine Creek / Vancouver Mining Division / British Columbia / Kanada
Geokronit
Views (File:
1288204552
): 2044
Geokronit
Größe: 2,7 x 2,4 x 1,3 cm, Miniera del Pollone, Pietrasanta, Apuanische Alpen, Toskana, Italien
Copyright: Rob Lavinsky; Contribution: thdun5
Location: Italien/Toskana (Toscana)/Lucca, Provinz/Apuanische Alpen/Pietrasanta/Valdicastello Carducci/Miniera del Pollone
Mineral: Geocronite
Image: 1288204552
Rating: 7 (votes: 2)
License: Usage for Mineralienatlas project only
Geokronit

Größe: 2,7 x 2,4 x 1,3 cm, Miniera del Pollone, Pietrasanta, Apuanische Alpen, Toskana, Italien

Copyright: Rob Lavinsky
Contribution: thdun5 2010-10-27
Locality: Miniera del Pollone / Valdicastello Carducci / Pietrasanta / Apuanische Alpen / Lucca, Provinz / Toskana (Toscana) / Italien

You find additional specimen at the Geolitho Museum

Collectors Summary

Color schwarz
Streak color bleigrau
Hardness (Mohs) 3.75
Solubility +++ Königswasser, HNO3, warme HCl
Crystal System monoklin, P21/m

Chemism

Chemical formula

Pb14(Sb,As)6S23

Chemical composition

Antimon, Arsen, Blei, Schwefel

Unit weight: 4298.749353 u; Number of atoms in the formula: 43

Info

Empirical formula:

Pb14(Sb0.75As0.25)6S23

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

17.16

23

53.49

32.0655000

737.5065000

Arsenic

As

2.61

1.5

3.49

74.9216020

112.3824030

Antimony

Sb

12.75

4.5

10.47

121.7601000

547.9204500

Lead

Pb

67.48

14

32.56

207.2100000

2,900.9400000

Analysis wt%

Pb : 69.18, As : 4.37, Sb : 9.02, S : 16.55 (Ref: American Mineralogist 76)

Strunz 9th edition incl. updates

2.JB.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
J: Sulfosalze mit PbS als Vorbild
B: [Galenit]-Derivate mit [Blei] (Pb)
30:Jordanit-Gruppe

Lapis Classification

II/E.15-020

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
E: Sulfosalze (S : As,Sb,Bi = x)
15: Blei-Sulfosalze mit As/Sb (x=3,8 - 3,1)

Classification by Hölzel

2.FB.320

2: SULFIDES
F: Sulfarsenites, Sulfantimonites, Sulfbismuthinites Trigonal Pyramids ~[AsS3]3-, ~[SbS3]3-, ~[BiS3]3-
B: Neso Sulfarsenites with additional S
3: Jordanite-Group

Dana 8th edition

03.03.01.02

03: Sulfides - Sulfosalts
03: Sulfides - Sulfosalts where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

bleigrau

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

8.963

Cell parameters b (Å)

31.93

Cell parameters c (Å)

8.500

Cell parameters a/b or c/a

0.281

Cell parameters c/b

0.266

Cell parameters α

90°

Cell parameters β

118.2

Cell parameters γ

90°

Z

2

Volume (ų)

2143.861

X-Ray Powder Diffraction

3.71(60),
3.54(100),
3.39(80),
3.18(80),
3.06(90),
2.98(70),
2.89(90),
2.80(50)

XRD chart Geocronite

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)

3.75

VHN (Hardness Vickers)

152 (100g)

Density (g/cm³)

6.4

6.659 ( ρ calc. Mineralienatlas )

Instability

+++ Königswasser, HNO3, warme HCl

(Co-)Type locality

(Co-)Type locality

Schweden/Västmanlands, Provinz/Sala/Silbergruben

Preface

Author (Name, Year)

Svanberg, 1839

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 178

Other languages

Spanish

Geocronita

English

Geocronite

French

Geocronite

German

Geokronit

Russian

Геокронит

Simplified Chinese

砷硫锑铅矿

Alternative Name

German

Geocronit

Geokronite

Kilbreckanite

German

Kilbrickenit

Spanish

Kilbrickenita

Kilbrickenite

German

Schulzit

Schulzite

Simplified Chinese

硫砷锑铅矿

CNMNC symbol

Symbol

Geo

Locations with GPS information

IDs

GUSID (Global unique identifier short form) xTjQDEOHV0S_9tpNq6VU1Q
GUID (Global unique identifier) 0CD038C5-8743-4457-BFF6-DA4DABA554D5
Database ID 1359