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Tazieffite

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Tazieffit
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Tazieffit
Bildbreite: 3 mm, Fundort: Vulkan Mutnovsky, Kamtschatka, Fernost, Russland
Copyright: Leonardus; Contribution: thdun5
Location: Russland/Ferner Osten, Föderationskreis/Kamtschatka, Krai/Vulkan Mutnovsky
Mineral: Tazieffite
Image: 1378305786
License: Usage for Mineralienatlas project only
Tazieffit

Bildbreite: 3 mm, Fundort: Vulkan Mutnovsky, Kamtschatka, Fernost, Russland
Copyright: Leonardus
Contribution: thdun5 2013-09-04
Locality: Vulkan Mutnovsky / Kamtschatka, Krai / Ferner Osten, Föderationskreis / Russland

You find additional specimen at the Geolitho Museum

Collectors Summary

Color silbergra, gelegentlich mit magenta farbton
Streak color schwarz
Lustre Metallglanz
Cleavages keine
Crystal System monoklin, C2/c

Chemism

Chemical formula

Pb20Cd2(As,Bi)22S50Cl10

Empirical formula (analysis)

Pb20.06(Cd0.89Sn0.39In0.02)(As12.49Bi10.15)(S50.08Se1.28)(Cl7.18I0.32Br0.15)

Chemical composition

Arsen, Bismut, Blei, Cadmium, Chlor, Schwefel

Unit weight: 9376.25622964 u; Number of atoms in the formula: 103.01

Info

Empirical formula:

Pb20.06(Cd0.89Sn0.39In0.02)(As12.49Bi10.15)(S50.08Se1.28)(Cl7.18I0.32Br0.15)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

17.13

50.08

48.62

32.0655000

1,605.8402400
Chlorine

Cl

2.71

7.18

6.97

35.4532000

254.5539760
Arsenic

As

9.98

12.49

12.13

74.9216020

935.7708090
Selenium

Se

1.08

1.28

1.24

78.9630000

101.0726400
Bromine

Br

0.13

0.15

0.15

79.9041000

11.9856150
Cadmium

Cd

1.07

0.89

0.86

112.4118000

100.0465020
Indium

In

0.02

0.02

0.02

114.8183000

2.2963660
Tin

Sn

0.49

0.39

0.38

118.7107000

46.2971730
Iodine

I

0.43

0.32

0.31

126.9044730

40.6094314
Lead

Pb

44.33

20.06

19.47

207.2100000

4,156.6326000
Bismuth

Bi

22.62

10.15

9.85

208.9803820

2,121.1508773

Analysis wt%

Cd : 1.06, Pb : 44.32, Sn : 0.50, As : 9.98, Bi : 22.63, S : 17.13, Se : 1.07, Cl : 2.72, I : 0.43 (Ref: American Mineralogist 2009)

Strunz 9th edition incl. updates

2.JB.

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)

Lapis Classification

II/E.27-015

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
E: Sulfosalze (S : As,Sb,Bi = x)

Classification by Hölzel

2.GD.685

2: SULFIDES
G: SnS Archetype
D:
6: Chlorosulfosalts

IMA status

anerkannt Juni 2008

Mineral status

anerkanntes Mineral

Optical Properties

Color

silbergra, gelegentlich mit magenta farbton

Streak color

schwarz

Lustre

Metallglanz

Pleochroism

schwach; dunkelgrau zu blaugrau

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

8.352

Cell parameters b (Å)

45.592

Cell parameters c (Å)

27.261

Cell parameters a/b or c/a

0.183

Cell parameters c/b

0.598

Cell parameters α

90°

Cell parameters β

98.84°

Cell parameters γ

90°

Z

4

Volume (ų)

10257.256

X-Ray Powder Diffraction

4.35(21), 4.07(39), 3.80(53), 3.66(24), 3.361(65), 3.313(100), 2.835(39), 2.789(36)
XRD chart Tazieffite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

6.07 (berechnet)

6.071 ( ρ calc. Mineralienatlas )

Cleavages

keine

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Kamtschatka, Krai/Vulkan Mutnovsky

Type material

Museum “C.L. Garavelli,” Dipartimento Geomineralogico, Università di Bari, Italien

Fersman Museum, Moscow, Russland

Ecole des Mines de Paris, Frankreich

Collection number of type material

8/nm–V28 (Italien), 92674 (Russland), 78986 (Frankreich)

Preface

Generation conditions

entsteht als Sublimat direkt aus vulkanischen Gasen

Name from

nach Haroun Tazieff, geb. in Warschau 11.5.1914, verstorben in Paris am 6.2.1998; bekannter Vulkanologe, Spezialist für vulkanische Gase und Feldbeobachtungen an aktiven Vulkanen.

Author (Name, Year)

Filippo Vurro, 2008

References

Neue Mineralien - IMA Web Seite Juni 2008

American Mineralogist 94 (2009), 1312

Other languages

German

Tazieffit

English

Tazieffite

Russian

Тазиевит

CNMNC (IMA)-Number

IMA 2008-012

CNMNC symbol

Symbol

Tzf

Locations with GPS information

IDs

GUSID (Global unique identifier short form) nwSuWFdd5Um2R1SC7ntV4A
GUID (Global unique identifier) 58AE049F-5D57-49E5-B647-5482EE7B55E0
Database ID 4911