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Cervelleite

Pictures (2 Images total)

Cervelleit
Views (File:
1539235122
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Cervelleit
Bambolla Mine (Moctezuma Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico; 1,9 x 1,6 cm; Schwarzmetallische Mikrokristalle; daneben ein blaues Oxidationsmineral.
Copyright: ; Contribution: guslis
Collection: Marco Gabriel Collection
Location: Mexiko/Sonora/Moctezuma, Municipio/Moctezuma/Moctezuma (Bambolla, Bamboya) Mine
Mineral: Cervelleite
Image: 1539235122
License: Usage for Mineralienatlas project only
Cervelleit

Bambolla Mine (Moctezuma Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico; 1,9 x 1,6 cm; Schwarzmetallische Mikrokristalle; daneben ein blaues Oxidationsmineral.
Collection: Marco Gabriel Collection
Contribution: guslis 2018-10-11
Locality: Moctezuma (Bambolla, Bamboya) Mine / Moctezuma / Moctezuma, Municipio / Sonora / Mexiko
Cervelleit
Views (File:
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Cervelleit
dunkelgrauer Cervelleit neben blauem Azurit, Moctezuma Mine, Moctezuma, Sonora, Mexiko; BB siehe Bild
Copyright: Joy Desor; Contribution: openpit
Location: Mexiko/Sonora/Moctezuma, Municipio/Moctezuma/Moctezuma (Bambolla, Bamboya) Mine
Mineral: Cervelleite
Image: 1648887206
License: Usage for Mineralienatlas project only
Cervelleit

dunkelgrauer Cervelleit neben blauem Azurit, Moctezuma Mine, Moctezuma, Sonora, Mexiko; BB siehe Bild
Copyright: Joy Desor
Contribution: openpit 2022-04-02
Locality: Moctezuma (Bambolla, Bamboya) Mine / Moctezuma / Moctezuma, Municipio / Sonora / Mexiko

Collectors Summary

Color grau, schwarz
Lustre Metallglanz
Hardness (Mohs) 2
Crystal System monoklin, P21/n

Chemism

Chemical formula

Ag4TeS

Chemical composition

Silber, Tellur, Schwefel

Unit weight: 591.14138 u; Number of atoms in the formula: 6

Info

Empirical formula:

Ag4TeS

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

5.42

1

16.67

32.0655000

32.0655000
Silver

Ag

72.99

4

66.67

107.8682200

431.4728800
Tellurium

Te

21.59

1

16.67

127.6030000

127.6030000

Analysis wt%

Ag : 73.00, Te : 22.20, S : 5.30 (Ref: European Journal of Mineralogy 89)

Strunz 9th edition incl. updates

2.BA.60

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
B: Metallsulfide, M : S > 1 : 1 (hauptsächlich 2 : 1)
A: mit Kupfer (Cu), Silber (Ag), Gold (Au)
60:Hessit-Gruppe

Lapis Classification

II/B.05-060

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
B: Sulfide, Selenide und Telluride mit Verhältnis Metall : S,Se,Te > 1:1
5: Sulfide, Selenide und Telluride mit vorwiegend Kupfer und Silber/Gold

Classification by Hölzel

2.BA.610

2: SULFIDES
B: Sulfides (etc) with Me/S > 1/1 (mostly 2/1)
A: With Cu,Ag,Au
6: Henryite-Hessite-Group (with Te)

Dana 8th edition

02.04.02.02

02: Sulfide Minerals
04: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=2:1

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Acanthite (Argentite) group

Optical Properties

Color

grau, schwarz

Change in color

blau bis blass grün in reflektiertem Licht

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Reflectivity: (Lambda nm) ↓, ↑, Ø

(400) 39.80, , 39.80
(420) 40.00, , 40.00
(440) 40.10, , 40.10
(460) 40.00, , 40.00
(480) 39.70, , 39.70
(500) 39.30, , 39.30
(520) 38.90, , 38.90
(540) 38.30, , 38.30
(560) 37.80, , 37.80
(580) 37.20, , 37.20
(600) 36.80, , 36.80
(620) 36.30, , 36.30
(640) 35.80, , 35.80
(660) 35.40, , 35.40
(680) 34.90, , 34.90
(700) 34.40, , 34.40
Reflection chart Cervelleite

Reflectivity Ø

37.79

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell parameters a (Å)

4.2696(4)

Cell parameters b (Å)

6.9761(5)

Cell parameters c (Å)

8.0423(7)

Cell parameters a/b or c/a

0.612

Cell parameters c/b

1.153

Cell parameters α

90°

Cell parameters β

100.332(6)°

Cell parameters γ

90°

Z

2

Volume (ų)

235.657

X-Ray Powder Diffraction

6.29(80),
5.74(20),
5.00(100),
4.64(50),
4.24(90),
3.766(70),
2.842(50),
2.596(20)
XRD chart Cervelleite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2

VHN (Hardness Vickers)

26 (10g)

Density (g/cm³)

8.53 (berechnet)

8.33 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Mexiko/Sonora/Moctezuma, Municipio/Moctezuma/Bambollita Mine

Type material

Natural History Museum, London, England

Collection number of type material

E.1161 BM 1985, 354

Paragenesis of type material

Benleonardit, Akanthit, Hessit, Quarz, Dolomit

Preface

Author (Name, Year)

Criddle & Chisholm & Stanley, 1989

References

European Journal of Mineralogy 1 (1989), 371

Bindi, L., Stanley, C.J., Spry, P.G. - Cervelleite, Ag4TeS: solution and description of the crystal structure. Mineralogy and Petrology, 109 (2015), 413-419.

IMA group assignments

Other languages

German

Cervelleit

French

Cervelleite

English

Cervelleite

Spanish

Cervelleíta

Russian

Сервеллеит

Simplified Chinese

硫碲银矿

Japanese

ｾﾙﾍﾞﾙ鉱

Alternative Name

Mineral B (of Karup-Møller & Pauly)

CNMNC (IMA)-Number

IMA 1986-018

CNMNC symbol

Symbol

Cvl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) wEf-IjYoN0ih0jxMXcmRww
GUID (Global unique identifier) 22FE47C0-2836-4837-A1D2-3C4C5DC991C3
Database ID 654