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Cosalite

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Second Zavodinskii Mine (Second Sawodinsk Mine), Zyryanovsk Rayon, Altai Mts (Rudnyi Altai), Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast'), Kazakhstan
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Formula:
Pb
 
2
Bi
 
2
S
 
5
May contain minor Cu.
System:OrthorhombicColour:Grey
Hardness:2½ - 3
Name:From the locality at the Cosala Mine, Sinaloa, Mexico.


Appears to contain Cu as an essential(?) constituent, according to Clark (1993) ("Hey's Mineral Index") and Zak et al. (1992).

Classification of Cosalite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/E.34-10
Nickel-Strunz 10th (pending) edition ID:2.JB.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
Dana 8th edition ID:3.5.9.1

3 : SULFOSALTS
5 : 2.5 < ø < 3
Hey's CIM Ref.:5.6.24

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
6 : Sulpharsenites etc. of Pb alone
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Type Occurrence of Cosalite

Type Locality:Cosalá Mine, Cosalá, Mun. de Cosalá, Sinaloa, Mexico
Year of Discovery:1868

Occurrences of Cosalite

Geological Setting:Moderate temperature hydrothermal veins, contact metasomatic deposits, epithermal replacements, pegmatites.

Physical Properties of Cosalite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Grey
Streak:Black
Hardness (Mohs):2½ - 3
Cleavage:Distinct/Good
Very rare
Fracture:Irregular/Uneven
Density (measured):6.86 - 6.99 g/cm3
Density (calculated):7.12 g/cm3

Crystallography of Cosalite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:a = 19.09Å, b = 23.87Å, c = 4.055Å
Ratio:a:b:c = 0.8 : 1 : 0.17
Unit Cell Volume:V 1,847.78 ų (Calculated from Unit Cell)
Z:8
Morphology:Prismatic [001]. Frequently elongated to needle-like and capillary forms. Usually massive., in radiating prismatic, fibrous, or feathery aggregates.

Optical Data of Cosalite

Type:Anisotropic
Anisotropism:Very weak, distinct in oil
Colour in reflected light:White with trace of cream
Pleochroism:Weak
Comments:Very weak.

Chemical Properties of Cosalite

Formula:
Pb
 
2
Bi
 
2
S
 
5


May contain minor Cu.
Essential elements:Bi, Pb, S
All elements listed in formula:Bi, Pb, S
Common Impurities:Cu,Fe

Relationship of Cosalite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.JB.05Diaphorite
Ag
 
3
Pb
 
2
Sb
 
3
S
 
8
2.JB.15Freieslebenite
AgPbSbS
 
3
2.JB.15Marrite
AgPbAsS
 
3
2.JB.20Cannizzarite
Pb
 
4
Bi
 
6
S
 
13
2.JB.20Wittite
Pb
 
9
Bi
 
12
(S,Se)
 
27
2.JB.25aJunoite
Cu
 
2
Pb
 
3
Bi
 
8
(S,Se)
 
16
2.JB.25iNeyite
Ag
 
2
Cu
 
6
Pb
 
25
Bi
 
26
S
 
68
2.JB.25cNordströmite
CuPb
 
3
Bi
 
7
(Se
 
4
S
 
10
)
2.JB.25gNuffieldite
Pb
 
2
Cu(Pb,Bi)Bi
 
2
S
 
7
2.JB.25dProudite
CuPb
 
7.5
Bi
 
9.33
(S,Se)
 
22
2.JB.25hWeibullite
Pb
 
5
Bi
 
8
Se
 
7
S
 
11
2.JB.25bFelbertalite
Cu
 
2
Pb
 
6
Bi
 
8
S
 
19
2.JB.25jRouxelite
Cu
 
2
HgPb
 
23
Sb
 
27
S
 
65.5
2.JB.25fÁngelaite
Cu
 
2
AgPbBiS
 
4
2.JB.25iCuproneyite
Cu
 
7
Pb
 
27
Bi
 
25
S
 
68
2.JB.30aGeocronite
Pb
 
14
(Sb,As)
 
6
S
 
23
2.JB.30aJordanite
Pb
 
14
(As,Sb)
 
6
S
 
23
2.JB.30bKirkiite
Pb
 
10
Bi
 
3
As
 
3
S
 
19
2.JB.30cTsugaruite
Pb
 
4
As
 
2
S
 
7
2.JB.35cPillaite
Pb
 
9
Sb
 
10
S
 
23
ClO
 
0.5
2.JB.35aZinkenite
Pb
 
9
Sb
 
22
S
 
42
2.JB.35bScainiite
Pb
 
14
Sb
 
30
S
 
54
O
 
5
2.JB.35dPellouxite
(Cu,Ag)Pb
 
10
Sb
 
12
S
 
27
O(Cl,S)
 
0.6
2.JB.35eChovanite
Pb
 
15-2x
Sb
 
14+2x
S
 
36
O
 
x
 (x ~ 0.2)
2.JB.40bAschamalmite
Pb
 
6
Bi
 
2
S
 
9
2.JB.40aBursaite
Pb
 
5
Bi
 
4
S
 
11
 (?)
2.JB.40bEskimoite
Ag
 
7
Pb
 
10
Bi
 
15
S
 
36
2.JB.40aFizélyite
Ag
 
5
Pb
 
14
Sb
 
21
S
 
48
2.JB.40aGustavite
Ag
 
3
Pb
 
5
Bi
 
11
S
 
24
2.JB.40aLillianite
Pb
 
3-2x
Ag
 
x
Bi
 
2+x
S
 
6
2.JB.40cOurayite
Ag
 
3
Pb
 
4
Bi
 
5
S
 
13
2.JB.40aRamdohrite
(Cd,Mn,Fe)Ag
 
5.5
Pb
 
12
Sb
 
21.5
S
 
48
2.JB.40aRoshchinite
Ag
 
19
Pb
 
10
Sb
 
51
S
 
96
2.JB.40dSchirmerite
PbAgBi
 
3
S
 
6
 - Pb
 
3
Ag
 
1.5
Bi
 
3.5
S
 
9
2.JB.40aTreasurite
Ag
 
7
Pb
 
6
Bi
 
15
S
 
32
2.JB.40aUchucchacuaite
AgMnPb
 
3
Sb
 
5
S
 
12
2.JB.40eUstarasite
Pb(Bi,Sb)
 
6
S
 
10
 (?)
2.JB.40aVikingite
Ag
 
5
Pb
 
8
Bi
 
13
S
 
30
2.JB.40aXilingolite
Pb
 
3
Bi
 
2
S
 
6
2.JB.40bHeyrovskýite
Pb
 
10
AgBi
 
5
S
 
18
2.JB.40UM1988-05-S:AgBiCuHgPb
(Hg,Ag,Cu,Pb)
 
5
Pb
 
5
Bi
 
11
S
 
27
2.JB.40UM1988-06-S:AgBiCuHgPb
(Pb,Hg)
 
12
(Cu,Ag)
 
3
(Bi,Sb)
 
10
(S,Te)
 
27
2.JB.40aAndorite IV
Pb
 
18
Ag
 
15
Sb
 
47
S
 
96
2.JB.55Gratonite
Pb
 
9
As
 
4
S
 
15
2.JB.60Marrucciite
Hg
 
3
Pb
 
16
Sb
 
18
S
 
46
2.JB.65Vurroite
Pb
 
20
Sn
 
2
(Bi,As)
 
22
S
 
54
Cl
 
6
Related Minerals - Hey's Index Grouping:

- +
5.6.1Sartorite
PbAs
 
2
S
 
4
5.6.2Dufrénoysite
Pb
 
2
As
 
2
S
 
5
5.6.3Liveingite
Pb
 
9
As
 
13
S
 
28
5.6.4Baumhauerite
Pb
 
12
As
 
16
S
 
36
5.6.5Gratonite
Pb
 
9
As
 
4
S
 
15
5.6.6Jordanite
Pb
 
14
(As,Sb)
 
6
S
 
23
5.6.7Fülöppite
Pb
 
3
Sb
 
8
S
 
15
5.6.8Zinkenite
Pb
 
9
Sb
 
22
S
 
42
5.6.9Plagionite
Pb
 
5
Sb
 
8
S
 
17
5.6.10Heteromorphite
Pb
 
7
Sb
 
8
S
 
19
5.6.11Launayite
Pb
 
22
Sb
 
26
S
 
61
5.6.12Playfairite
Pb
 
16
Sb
 
18
S
 
43
5.6.13Semseyite
Pb
 
9
Sb
 
8
S
 
21
5.6.14Madocite
Pb
 
17
Sb
 
16
S
 
41
5.6.15Boulangerite
Pb
 
5
Sb
 
4
S
 
11
5.6.17Robinsonite
Pb
 
4
Sb
 
6
S
 
13
5.6.18Guettardite
Pb(Sb,As)
 
2
S
 
4
5.6.19Twinnite
Pb(Sb,As)
 
2
S
 
4
5.6.20Veenite
Pb
 
2
(Sb,As)
 
2
S
 
5
5.6.21Sorbyite
CuPb
 
9
(Sb,As)
 
11
S
 
26
5.6.22Geocronite
Pb
 
14
(Sb,As)
 
6
S
 
23
5.6.23Galenobismutite
PbBi
 
2
S
 
4
5.6.25Cannizzarite
Pb
 
4
Bi
 
6
S
 
13
5.6.26Lillianite
Pb
 
3-2x
Ag
 
x
Bi
 
2+x
S
 
6
5.6.27Giessenite
Pb
 
27
Cu
 
2
(Bi,Sb)
 
19
S
 
57
5.6.28Platynite
5.6.29Xilingolite
Pb
 
3
Bi
 
2
S
 
6
5.6.30Weibullite
Pb
 
5
Bi
 
8
Se
 
7
S
 
11
5.6.31Wittite
Pb
 
9
Bi
 
12
(S,Se)
 
27
5.6.32Kirkiite
Pb
 
10
Bi
 
3
As
 
3
S
 
19
5.6.33Ustarasite
Pb(Bi,Sb)
 
6
S
 
10
 (?)

Other Names for Cosalite

Synonyms:
BjelkiteBjelkiteaCuprocosaliteRetzbanyite (of Hermann)Rezbanyite (of Hermann)
Vismutsvafladt Svafvelbly
Other Languages:
German:Bjelkeit
Bleibismutit
Cosalit
Cuprocosalit
Russian:Козалит
Simplified Chinese:斜方辉铅铋矿
Spanish:Bleibismutita
Cosalita
Cuprocosalita
Varieties:
Antimonian CosaliteArgentocosaliteArgentocuprocosalite

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 Cosalite

Reference List:

- +
Genth (1868), American Journal of Science: 45: 319.

Lundström (1874), Geol. För. Förh.: 2: 178.

Groth (1874): 18.

Sjögren (1878), Geol. För. Förh.: 4: 107.

Flink (1886), Ak. Stockholm, Öfv. Bihang.: 12(2): 2, 6.

Bancroft (1910) USGS Bulletin 430: 214.

Bastin (1923), USGS Bulletin 735D: 65.

Berry (1939), University of Toronto Stud., Geol. Ser.: 42: 23.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 445-447.

Zak, L., Megarskaya, L., Mumme, W. G. (1992): Rezbanyite from Ocna de fier (Vasko): a mixture of bismuthinite derivatives and cosalite. Neues Jahrbuch für Mineralogie, Monatshefte 1992, 69-79. [on Cu contents of cosalite]

Zeitschrift für Kristallographie: 140: 114-136.

D. TOPA & E. MAKOVICKY (2010): Crystal chemistry of cosalite based on new microprobe data and single-crystal structure determinations. Can. Mineral. (in press)

Internet Links for Cosalite

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    • Localities for Cosalite

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    Locality Updated: Pegmatite No. 2, Donkerhoek Farm 91 (Donkerhuk), Karibib District, Erongo Region, NamibiaFrom Debbie Woolf, 24th May 2013 01:05:49