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Incaite

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Potosiit/Incait
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Potosiit/Incait

Mina San José, Oruro Stadt/Bolivien; XX bis 3 mm frei in massiver Erzmatrix; Bildbreite ca. 4,5 cm; Fund März 1991

Collection: Burkhard Dallosch
Copyright: Burkhard Dallosch
Contribution: Erzsucher 2013-07-12
Locality: San José Mine / Oruro, Stadt / Cercado, Provinz / Oruro, Departamento / Bolivien

Collectors Summary

Color grau metallisch
Hardness (Mohs) 2
Cleavages vollkommen
Crystal System monoklin,

Chemism

Chem­ical formula

(Pb,Ag)4Sn4FeSb2S15

Addi­tional chem. informa­tion

Sn(II)-reiche Varietät von Franckeit. Siehe auch Potosíit.

Chem­ical com­po­si­tion

Antimon, Blei, Eisen, Silber, Zinn, Schwefel

Unit weight: 1984.68892 u; Number of atoms in the formula: 26

Info

Empirical formula:

(Pb0.75Ag0.25)4Sn4FeSb2S15

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

24.23

15

57.69

32.0655000

480.9825000

Iron

Fe

2.81

1

3.85

55.8452000

55.8452000

Silver

Ag

5.44

1

3.85

107.8682200

107.8682200

Tin

Sn

23.93

4

15.38

118.7107000

474.8428000

Antimony

Sb

12.27

2

7.69

121.7601000

243.5202000

Lead

Pb

31.32

3

11.54

207.2100000

621.6300000

Anal­y­sis wt%

Ø S : 23.20, Pb : 36.53, Ag : 2.15, Sn : 23.09, Sb : 12.70, Fe : 2.35 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) 74)

Clas­sifica­tion by Hölzel

2.GB.430

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

Dana 8th edi­tion

03.01.04.03

03: Sulfides - Sulfosalts
01: Sulfides - Sulfosalts where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
04: Cylindrite Group

IMA sta­tus

Diskreditiert 2007

Min­eral sta­tus

Varietät

Var­i­ety / poly­type of

Franckeite

Optical Properties

Color

grau metallisch

Crystallography

Crystal Sys­tem

monoklin

Cell param­e­ters a (Å)

17.29

Cell param­e­ters b (Å)

5.79

Cell param­e­ters c (Å)

5.83

Cell param­e­ters a/b or c/a

2.986

Cell param­e­ters c/b

1.007

Cell param­e­ters α

90°

Cell param­e­ters β

94.14°

Cell param­e­ters γ

90°

Volumne (ų)

582.113

X-Ray Pow­der Diffrac­tion

4.31(50),
3.83(30),
3.43(70),
3.23(30),
3.12(30),
2.862(100),
2.058(30),
2.029(80)

XRD chart Incaite

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

Physical Properties

Hard­ness (Mohs)

2

Cleav­ages

vollkommen

Preface

Author (Name, Year)

Makovicky, 1974

References

Neues Jahrbuch für Mineralogie, Monatshefte (1974), 235

Diskreditiert nach Y. Moelo et al., Europ. Journal of Mineralogy 20 (2008) S.7-46. Zit. in Lapis 4/2008, S.38.

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

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Colusite

Cu12VAs3S16

kubisch : 43m : P43n

03.01.01.01

Germanocolusite

Cu13V(Ge,As)3S16

kubisch : 43m : P43m

03.01.01.02

Nekrasovite

Cu13V(Sn,As,Sb)3S16

kubisch : 43m : P43n

03.01.01.03

Stibiocolusite

Cu13V(Sb,As,Sn)3S16

kubisch : 43m : P43m

03.01.01.04

Vinciennite

Cu10Fe4Sn(As,Sb)S16

03.01.02.01

Lévyclaudite

Pb8Sn7Cu3(Bi,Sb)3S28

03.01.03.01

Cylindrite

Pb3Sn4FeSb2S14

03.01.04.01

Franckeite

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

triklin : 1 : C1

03.01.04.02

'Incaite' (Var.v. Franckeite)

(Pb,Ag)4Sn4FeSb2S15

03.01.04.03

'Potosíite' (Var.v. Franckeite)

Pb48Sn184+Fe72+Sb163+S115

03.01.04.04

Miharaite

PbCu4FeBiS6

orthorhombisch : mm2 : Pb21m

03.01.05.01

Billingsleyite

Ag7(As,Sb)S6

kubisch : 23 : P213

03.01.06.01

'Pearceite-T2ac' (Pol.v. Pearceite-Tac)

[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]

trigonal : 32 : P321

03.01.07.01

Polybasite

(Ag,Cu)16Sb2S11

03.01.07.02

Cupropolybasite

[Cu6Sb2S7][Ag9CuS4]

trigonal : 3m : P3m1

03.01.07.03

Pearceite-Tac

[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]

trigonal : 3m : P3m1

03.01.08.01

'Polybasite-Tac' (Pol.v. Polybasite)

[Ag9CuS4][(Ag,Cu)6(Sb,As)2S7]

trigonal : 3m : P3m1

03.01.08.02

Petrovicite

PbHgCu3BiSe5

orthorhombisch : mmm, mm2 : Pnam, Pna21

03.01.09.01

Mazzettiite

Ag3HgPbSbTe5

03.01.09.02

IMA Number

IMA 1973-059

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

German pages

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English pages

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