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Coiraite (As-Franckeit)

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Coirait
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Coirait

Schwarzer, massiver Coirait mit kleinen Einschlüssen von Sphalerit. Bildbreite 7 mm. Fundort: Oploca Vein, Pirquitas, Rinconada Departmen, Jujuy, Argentinien.

Collection: Yi Sun
Copyright: Yi Sun
Contribution: sun-mineral 2019-09-06
Locality: Oploca Mine / Pirquitas Ag-Sn-Lagerstätte / Rinconada Department / Jujuy, Provinz / Argentinien

Collectors Summary

Color dunkelgrau
Streak color dunkelgrau - schwarz
Hardness (Mohs) < 2
Cleavages vollkommen parallel zu einer Basisfläche
Crystal System monoklin,
Morphology gefunden als grau-schwarze Kristalle mit Sphalerit

Additional information / Summary

As (Arsen) Analogie zu Franckeit

Chemism

Chem­ical formula

(Pb,Sn)12.5Sn5FeAs3S28

Addi­tional chem. informa­tion

Franckeit Mischkristall Serie

Chem­ical com­po­si­tion

Arsen, Blei, Eisen, Zinn, Schwefel

Unit weight: 4085.5621935 u; Number of atoms in the formula: 49.5

Info

Empirical formula:

(Pb0.75Sn0.25)12.5Sn5FeAs3S28

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

21.98

28

56.57

32.0655000

897.8340000

Iron

Fe

1.37

1

2.02

55.8452000

55.8452000

Arsenic

As

5.50

3

6.06

74.9216020

224.7648060

Tin

Sn

23.61

8.13

16.41

118.7107000

964.5244375

Lead

Pb

47.55

9.38

18.94

207.2100000

1,942.5937500

Anal­y­sis wt%

Fe : 1.49, Pb : 53.92, Sn : 17.39, As : 5.25, S : 21.30 (Ref: Mineralogical Magazine 2008)

Strunz 9th edi­tion incl. updates

2.HF.25

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
H: Sulfosalze mit SnS als Vorbild
F: Mit SnS und PbS archetyp strukturellen Einheiten
25:Kylindrit-Gruppe

Lapis Clas­sifica­tion

II/C.17-065

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

Clas­sifica­tion by Hölzel

2.GB.415

2: SULFIDES
G: SnS Archetype
B: With Cu,Ag,Fe and Pb
4: Cylindrite Franckeite-Group

IMA sta­tus

anerkannt 2005

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

dunkelgrau

Streak color

dunkelgrau - schwarz

Diaphane­ity (Trans­parency)

opak

Crystallography

Crystal Sys­tem

monoklin

Cell param­e­ters a (Å)

see

Cell param­e­ters b (Å)

Syn.

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

-

Cell param­e­ters c/b

-

Cell param­e­ters α

-

Cell param­e­ters β

-

Cell param­e­ters γ

-

Z

-

Volumne (ų)

-

X-Ray Pow­der Diffrac­tion

4.27(61), 3.426(72), 3.345(87), 3.122(78), 3.009(71), 2.966(94), 2.883(100), 2.065(51)

XRD chart Coiraite

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

Morphol­ogy

gefunden als grau-schwarze Kristalle mit Sphalerit

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

< 2

VHN (Hard­ness Vick­ers)

74 (10g)

Density (g/cm³)

5.92 ber.

Cleav­ages

vollkommen parallel zu einer Basisfläche

Tenac­ity

flexibel, unelastisch, leicht formbar

(Co-)Type locality

(Co-)Type locality

Argentinien/Jujuy, Provinz/Rinconada Department/Pirquitas Ag-Sn-Lagerstätte

Par­a­ge­n­e­sis of type mate­r­ial

Sphalerit

Preface

Rare­ness

Pirquitas Gruben Bezirk, Puna Region, Rinconada Department, Jujuy Provinz, Argentinien

Name from

Der Name wurde nach der argentischen Mineralogin "Beatrix L. Coira Florencia Márquez Zavalía" vergeben

References

Paar, W.H., de Brodtkorb, M.K., Sureda, R.J., Topa, D. (2001): Mineralogía y quimismo de sulfuros y sulfosales de estaño y plomo en las vetas de Mine Pirquitas, Jujuy, Argentine (22°41' S66°28' W). Geológica Revista de Chile, 28(2), 259-268.

de Brodtkorb, M.K. (2002): Las especies minerales de the Argentine República. Asociación Argentine Mineralógica, And, Buenos Aires, 246 pp.
Mineralien Welt 03/09, Steffen Jahn, Neue Mineralien

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Abramovite

Pb2SnInBiS7

triklin : 1 : P1

2.HF.25

Coiraite

(Pb,Sn)12.5Sn5FeAs3S28

2.HF.25

Cylindrite

Pb3Sn4FeSb2S14

2.HF.25

Franckeite

Pb21.7Sn9.3Fe4.0Sb8.1S56.9

triklin : 1 : C1

2.HF.25

Lévyclaudite

Pb8Sn7Cu3(Bi,Sb)3S28

2.HF.25

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Herzenbergite

SnS

orthorhombisch : mmm : Pbnm

II/C.17-010

Stistaite

SnSb

II/C.17-020

Mohite

Cu2SnS3

monoklin : m : Cc

II/C.17-030

Teallite

PbSnS2

orthorhombisch : mmm : Pbnm

II/C.17-040

Suredaite

PbSnS3

orthorhombisch : mmm : Pnma

II/C.17-045

Lévyclaudite

Pb8Sn7Cu3(Bi,Sb)3S28

II/C.17-055

Coiraite

(Pb,Sn)12.5Sn5FeAs3S28

II/C.17-065

Franckeite

Pb21.7Sn9.3Fe4.0Sb8.1S56.9

triklin : 1 : C1

II/C.17-070

Cylindrite

Pb3Sn4FeSb2S14

II/C.17-080

Abramovite

Pb2SnInBiS7

triklin : 1 : P1

II/C.17-090

Merelaniite

Mo4Pb4VSbS15

triklin : 1, 1 : C1, C1

II/C.17-110

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Potosíite' (Var.v. Franckeite)

Pb48Sn184+Fe72+Sb163+S115

2.GB.400

Franckeite

Pb21.7Sn9.3Fe4.0Sb8.1S56.9

triklin : 1 : C1

2.GB.410

Coiraite

(Pb,Sn)12.5Sn5FeAs3S28

2.GB.415

Lévyclaudite

Pb8Sn7Cu3(Bi,Sb)3S28

2.GB.420

'Incaite' (Var.v. Franckeite)

(Pb,Ag)4Sn4FeSb2S15

2.GB.430

Cylindrite

Pb3Sn4FeSb2S14

2.GB.440

Abramovite

Pb2SnInBiS7

triklin : 1 : P1

2.GB.445

Dufrénoysite

Pb2As2S5

monoklin : 2 : P21

2.GB.460

Cannizzarite

Pb48Bi56(S124Se8)

monoklin : 2/m : P21/m

2.GB.470

'Wittite'

Pb8Bi10(S,Se)23

monoklin : 2/m : P2/m

2.GB.480

Lengenbachite

Ag4Cu2Pb18As12S39

triklin : 1, 1 : P1, P1

2.GB.490

Other languages

German

Coirait

English

Coiraite

Alternative Name

As-Franckeit

As-Franckeite

Unnamed (As analogue of Franckeite)

IMA Number

IMA 2005-024

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Coirait
Google-Bilder-Suche - search for: Coirait
Mineralogisch-Petrographisches-Institut Hamburg - search for: Coirait

English pages

Mindat - search for: Coiraite
Webmineral - search for:Coiraite
Handbook-of-Mineralogy - search for: Coiraite
RRUFF - Raman, XRD and other mineral data - search for: Coiraite
RRUFF - References and PDF downloads - search for: Coiraite
American-Mineralogist-Crystal-Structure-Database - search for: Coiraite
Athena - search for: Coiraite

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Coirait
Crystal-Treasure.com - search for: Coirait
Bosse - search for: Coirait



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