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Matildite

Pictures (22 Images total)

Matildit
Views (File:
1187645197
): 3188
Matildit
Fundort: Grube Clara, Wolfach, Schwarzwald; Bildbreite: 3 mm
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Matildite
Image: 1187645197
Rating: 10 (votes: 2)
License: Usage for Mineralienatlas project only
Matildit

Fundort: Grube Clara, Wolfach, Schwarzwald; Bildbreite: 3 mm
Copyright: Stephan Wolfsried
Contribution: Hg 2007-08-20
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Matildit
Views (File:
1187645217
): 3098
Matildit
Fundort: Grube Clara, Wolfach, Schwarzwald; Bildbreite: 4 mm
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Matildite
Image: 1187645217
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Matildit

Fundort: Grube Clara, Wolfach, Schwarzwald; Bildbreite: 4 mm
Copyright: Stephan Wolfsried
Contribution: Hg 2007-08-20
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Matildit
Views (File:
1219554909
): 2553
Matildit
mit Arsenopyrit. Grube Clara, Oberwolfach, Schwarzwald. BB 2 mm
Copyright: Stephan Wolfsried; Contribution: Collector
Collection: Stephan Wolfsried
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Matildite
Image: 1219554909
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Matildit

mit Arsenopyrit. Grube Clara, Oberwolfach, Schwarzwald. BB 2 mm
Collection: Stephan Wolfsried
Copyright: Stephan Wolfsried
Contribution: Collector 2008-08-24
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Matildit
Views (File:
1644921452
): 211
Matildit
Grube Clara, Wolfach, Schwarzwald; Bildbreite 1,8 mm; Stack aus 67 Einzelbildern
Copyright: ankerit; Contribution: ankerit
Collection: ankerit, Collection number: 7841
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Matildite
Image: 1644921452
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Matildit (SNr: 7841)

Grube Clara, Wolfach, Schwarzwald; Bildbreite 1,8 mm; Stack aus 67 Einzelbildern
Collection: ankerit
Copyright: ankerit
Contribution: ankerit 2022-02-15
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Matildit
Views (File:
1574063640
): 789
Matildit
Matilditkristalle von der Grube Clara im Schwarzwald. Bildhöhe etwa 4 mm.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: Clara-Mati-2-1-2
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Matildite
Image: 1574063640
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Matildit (SNr: Clara-Mati-2-1-2)

Matilditkristalle von der Grube Clara im Schwarzwald. Bildhöhe etwa 4 mm.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2019-11-18
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color grau, eisenschwarz-metallisch
Streak color grau
Lustre Metallglanz
Hardness (Mohs) 2.5
Fracture unregelmäßig, uneben
Solubility +++ HNO3
Crystal System trigonal, P3m1

Chemism

Chemical formula

AgBiS2

Chemical composition

Bismut, Silber, Schwefel

Unit weight: 380.979602 u; Number of atoms in the formula: 4

Info

Empirical formula:

AgBiS2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

16.83

2

50.00

32.0655000

64.1310000
Silver

Ag

28.31

1

25.00

107.8682200

107.8682200
Bismuth

Bi

54.85

1

25.00

208.9803820

208.9803820

Analysis wt%

Ag : 27.30, Bi : 56.00, S : 16.90 (Ref: Canadian Mineralogist 69)

Strunz 9th edition incl. updates

2.CD.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
D: mit Zinn (Sn), Blei (Pb), Quecksilber (Hg), usw.
15:Matildit-Gruppe

Lapis Classification

II/C.16-035

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
C: Sulfide mit Metall : S,Se,Te ~ 1:1

Classification by Hölzel

2.CD.300

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
D: With Sn,Pb, etc. - Coordination Number ~[4+1]
3: Matildite-Group

Hey's Chemical Index of Minerals

05.02.17

05: Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
02: Sulpharsenites etc. of Ag

Dana 8th edition

03.07.01.01

03: Sulfides - Sulfosalts
07: Sulfides - Sulfosalts where z/y = 2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
01: Matildite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

grau, eisenschwarz-metallisch

Streak color

grau

Change in color

weiß in reflektiertem Licht

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

schwach

Anisotropism

schwach

Reflectivity: (Lambda nm) ↓, ↑, Ø

(400) 41.40, 47.20, 44.30
(420) 41.90, 47.80, 44.85
(440) 42.20, 48.30, 45.25
(460) 43.10, 48.80, 45.95
(480) 43.40, 49.30, 46.35
(500) 43.40, 49.30, 46.35
(520) 43.00, 49.00, 46.00
(540) 42.80, 48.40, 45.60
(560) 42.50, 47.80, 45.15
(580) 42.20, 47.30, 44.75
(600) 41.70, 46.90, 44.30
(620) 41.30, 46.70, 44.00
(640) 40.80, 46.70, 43.75
(660) 40.30, 46.70, 43.50
(680) 39.90, 46.30, 43.10
(700) 39.30, 46.10, 42.70
Reflection chart Matildite

Reflectivity Ø

44.74

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

4.066

Cell parameters b (Å)

-

Cell parameters c (Å)

18.958

Cell parameters a/b or c/a

4.663

Cell parameters c/b

-

Z

3

Volume (ų)

271.43

X-Ray Powder Diffraction

6.311(30),
3.453(20),
3.302(80),
2.827(100),
2.029(50),
1.966(60),
1.709(30),
1.246(30)
XRD chart Matildite

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)

2.5

VHN (Hardness Vickers)

68 (25g)

Density (g/cm³)

6.99 (berechnet)

6.992 ( ρ calc. Mineralienatlas )

Fracture

unregelmäßig, uneben

Tenacity

spröde

Instability

+++ HNO3

(Co-)Type locality

(Co-)Type locality

Peru/Junín, Region/Yauli, Provinz/Morococha, Distrikt/Matilda Mine

Preface

Author (Name, Year)

D'Achiardi, 1883

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 315.

Paul Alexandre; Moses Aisida: On the matildite–bohdanowiczite solid-solution series. Mineralogical Magazine Vol. 87, Nr. 2 (2023) S. 292-299.

Other languages

German

Matildit

Spanish

Matildita

English

Matildite

French

Matildite

Russian

Матильдит

Simplified Chinese

硫铋银矿

Japanese

ﾏﾁﾙﾀﾞ鉱

Alternative Name

Morocochite

Peruvite

Plenargyrite

Silberwismutglanz

Japanese

マティルダ鉱

Simplified Chinese

硫银铋矿

CNMNC symbol

Symbol

Mtd

Locations with GPS information

IDs

GUSID (Global unique identifier short form) wlud0uNcQk6y6QDo7BI48A
GUID (Global unique identifier) D29D5BC2-5CE3-4E42-B2E9-00E8EC1238F0
Database ID 2409