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Hocartite

Pictures (3 Images total)

Hocartit
Views (Image: 1220005563): 1108
Hocartit

Huangshaping,Guiyang, Chenzhou, Hunan, China. BB 6 mm

Collection: Collector
Copyright: Collector
Contribution: Collector 2008-08-29
Locality: Huangshaping Pb-Zn-W-Mo-Lagerstätte / Guiyang, Kreis / Chenzhou, Präfektur / Hunan, Provinz / China
Hocartit
Views (Image: 1581507081): 289
Hocartit

Bildbreite: 4 mm; Fundort: Oploca Mine, Pirquitas Ag-Sn-Lagerstätte, Rinconada Department, Provinz Jujuy, Argentinien

Copyright: Leonardus
Contribution: slugslayer 2020-02-12
Locality: Oploca Mine / Pirquitas Ag-Sn-Lagerstätte / Rinconada Department / Jujuy, Provinz / Argentinien
Hocartit
Views (Image: 1581507165): 355
Hocartit

Bildbreite: 1,5 mm; Fundort: Pirquitas Ag-Sn-Lagerstätte, Rinconada Department, Provinz Jujuy, Argentinien

Collection: Stephan Wolfsried
Copyright: Stephan Wolfsried
Contribution: slugslayer 2020-02-12
Locality: Pirquitas Ag-Sn-Lagerstätte / Rinconada Department / Jujuy, Provinz / Argentinien

Collectors Summary

Color bräunlich grau
Lustre Metallglanz
Hardness (Mohs) 4.25
Crystal System tetragonal, I42m

Chemism

Chem­ical formula

Ag2FeSnS4

Chem­ical com­po­si­tion

Eisen, Silber, Zinn, Schwefel

Unit weight: 518.55434 u; Number of atoms in the formula: 8

Info

Empirical formula:

Ag2FeSnS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

24.73

4

50.00

32.0655000

128.2620000

Iron

Fe

10.77

1

12.50

55.8452000

55.8452000

Silver

Ag

41.60

2

25.00

107.8682200

215.7364400

Tin

Sn

22.89

1

12.50

118.7107000

118.7107000

Anal­y­sis wt%

Ø Sn : 26.30, Ag : 36.00, Cu : 1.80, Fe : 7.60, Zn : 4.10, S : 26.60 (Ref: Bulletin de Mineralogie 68)

Strunz 9th edi­tion incl. updates

2.CB.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
B: mit Zink (Zn), Eisen (Fe), Kupfer (Cu), Silber (Ag), usw.
15:Stannit-Gruppe

Lapis Clas­sifica­tion

II/C.06-110

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

Clas­sifica­tion by Hölzel

2.CB.350

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
3: Stannite-Group

Hey's Chem­ical Index of Min­er­als

06.01.16

06: Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
01: Sulphostannates and other sulfides containing Sn

Dana 8th edi­tion

02.09.02.06

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
02: Stannite Group (Tetragonal: I-42m) A2BCS type

IMA sta­tus

anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Stannite group

Optical Properties

Color

bräunlich grau

Diaphane­ity (Trans­parency)

opak

Lus­tre

Metallglanz

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

42m

Space Group number

121

Space Group

I42m

Cell param­e­ters a (Å)

5.74

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

10.96

Cell param­e­ters a/b or c/a

1.909

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

361.106

X-Ray Pow­der Diffrac­tion

3.26(100),
2.87(40),
2.74(30),
2.03(50),
1.98(80),
1.72(70),
1.666(30),
1.287(30)

XRD chart Hocartite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

4.25

VHN (Hard­ness Vick­ers)

222 (25g)

Density (g/cm³)

4.77

4.769 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Bolivien/Potosi, Departamento/Sur Chichas (Sud Chichas), Provinz/Atocha/Chocaya Mine

Type mate­r­ial

Bolivien - Potosí Dep.? - Chocaya - Sn Mine von Tacama (auch gefunden in den bolivianischen Minen Hocaya und Colquechaca)
-Frankreich: ENSM-Paris - Type: HT: (don. P Picot, 1970)
-Frankreich: MHN-Paris - Type: T:

Frankreich - Auvergne - Cantal dép. - Fournial (Sn-Ag-Mineralisation)
-Frankreich: ENSM-Paris - Type: HT: from France or Bolivia?
-Frankreich: MHN-Paris - Type: T:

Preface

Author (Name, Year)

Caye & Laurent & Picot & Pierrot & Lévy, 1968

References

Strunz Mineralogical Tables 9. Edition.

Caye R, Laurent Y, Picot P, Pierrot R, Levy C: Bull.Soc.fr.Min.Crist.(1968) 91, 383-387

American Mineralogist: 54, 573 (abs. ref. 1).

IMA group assignments

Other languages

German

Hocartit

Spanish

Hocartita

French

Hocartite

English

Hocartite

Russian

Окартит

Simplified Chinese

银黄锡矿

Alternative Name

Okartite

CNMNC (IMA)-Number

IMA 1967-046

CNMNC symbol

Symbol

Hoc

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

German pages

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English pages

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Russian pages

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German pages

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