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Coiraite

Formula:
(Pb,Sn)
 
12.5
Sn
 
5
FeAs
 
3
S
 
28
System:MonoclinicColour:dark grey


Franckeite Group.
The As analogue of Franckeite.

Classification of Coiraite

IMA status:Approved 2005
Strunz 8th edition ID:2/C.17-
Nickel-Strunz 10th (pending) edition ID:2.HF.25b

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
F : With SnS and PbS archetype structure units
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Type Occurrence of Coiraite

Type Locality:Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina
Geological Setting of type material:Polymetallic hydrotermal veins in Ordovician sediments of the Acoyte Formation
Associated Minerals at type locality:
Sphalerite

Physical Properties of Coiraite

Colour:dark grey

Crystallography of Coiraite

Crystal System:Monoclinic
X-Ray Powder Diffraction:
d-spacingIntensity
4.27 (61)
3.426 (72)
3.345 (87)
3.122 (78)
3.009 (71)
2.966 (94)
2.883 (100)

Chemical Properties of Coiraite

Formula:
(Pb,Sn)
 
12.5
Sn
 
5
FeAs
 
3
S
 
28
Essential elements:As, Fe, Pb, S, Sn
All elements listed in formula:As, Fe, Pb, S, Sn
Analytical Data:Analysis from the book by de Brodtkorb
Pb (53.1-54.1)
Sn (17.07-18.6)
Fe (1.5-1.8)
Ag (0.4)
S (19.9-21.5)
Sb (0.6)
As (5.5-5.8)

Relationship of Coiraite to other Species

Member of Group:
Franckeite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
2.HF.20Vrbaite
Tl
 
4
Hg
 
3
Sb
 
2
As
 
8
S
 
20
2.HF.25aCylindrite
Pb
 
3
Sn
 
4
FeSb
 
2
S
 
14
2.HF.25bFranckeite
Fe
2+
 
(Pb,Sn
2+
 
)
 
6
Sn
4+
2
Sb
 
2
S
 
14
2.HF.25bIncaite
(Pb,Ag)
 
4
Sn
 
4
FeSb
 
2
S
 
13
2.HF.25aLévyclaudite
Pb
 
8
Sn
 
7
Cu
 
3
(Bi,Sb)
 
3
S
 
28
2.HF.25bPotosíite
Pb
 
6
Sn
 
3
FeSb
 
3
S
 
16
2.HF.25aAbramovite
Pb
 
2
SnInBiS
 
7
2.HF.30Lengenbachite
(Ag,Cu)
 
2
Pb
 
6
As
 
4
S
 
13

Other Names for Coiraite

Synonyms:
As-FranckeiteIMA2005-024Unnamed (As analogue of Franckeite)
Other Languages:
German:As-Franckeit

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Coiraite

Reference List:Brodtkorb, M. K. de: Las Especies Minerales de la Republica Argentina (2002) Asociacion Mineralogica Argentina.

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 Mina Pirquitas, Jujuy, Argentina (22°41'S66°28'W). Revista geológica de Chile, 28(2), 259-268.

Internet Links for Coiraite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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    Localities for Coiraite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • Jujuy
      • Rinconada Department
    		M. de Brodtkorb (2002)
    Mineral and/or Locality
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