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Pampaloite

Collectors Summary

Hardness (Mohs) 4-5
Crystal System monoklin, C2/c

Chemism

Chemical formula

AuSbTe

Empirical formula (analysis)

Au0.99Sb1.00Te1.01

Chemical composition

Antimon, Gold, Tellur

Unit weight: 445.63601648 u; Number of atoms in the formula: 3

Info

Empirical formula:

Au0.99Sb1.00Te1.01

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Antimony

Sb

27.32

1

33.33

121.7601000

121.7601000

Tellurium

Te

28.92

1.01

33.67

127.6030000

128.8790300

Gold

Au

43.76

0.99

33.00

196.9665520

194.9968865

Strunz 9th edition incl. updates

2.E.

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2

IMA status

anerkannt CNMNC Newsletter 41, Jan. 2018

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

15

Space Group

C2/c

Cell parameters a (Å)

11.947(3)

Cell parameters b (Å)

4.481(1)

Cell parameters c (Å)

12.335(3)

Cell parameters a/b or c/a

2.666

Cell parameters c/b

2.753

Cell parameters α

90°

Cell parameters β

105.83(2)°

Cell parameters γ

90°

Z

8

Volume (ų)

635.305

Crystal structure

Neuer Strukturtyp; Struktur bestimmt

X-Ray Powder Diffraction

4.846(24), 3.825(18), 2.978(100), 2.968(50), 2.242(25), 2.144(55), 2.063(33), 1.789(18)

XRD chart Pampaloite

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

Physical Properties

Hardness (Mohs)

4-5

VHN (Hardness Vickers)

245 bis 295 kg/mm2, Mittelwert 276 kg/mm2, gemessen an synth. Material

Density (g/cm³)

9,33 ber.

9.318 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Finnland/Nordkarelien (Pohjois-Karjala), Landschaft/Ilomantsi/Pampalo Mine

Type material

Typisches Material ist in den mineralogischen Sammlungen des Natural History Museum, Cromwell Road, SW7 5BD London, U.K., Katalognummer BM 2017,16 hinterlegt.

Paragenesis of type material

Gold, Frohbergit, Altait

Preface

Author (Name, Year)

Anna Vymazalová, Kari Kojonen, František Laufek, Bo Johanson, Chris J. Stanley, Jakub Plášil und Patricie Halodová (2019)

References

Vymazalová, A., Kojonen, K., Laufek, F., Johanson, B., Stanley, C.J., Plášil, J. and Halodová, P. (2018) Pampaloite, IMA 2017-096. CNMNC Newsletter No. 41, February 2018, page xxx; Mineralogical Magazine, 82, xxx-xxx.

Anna Vymazalová; Kari Kojonen; František Laufek; Bo Johanson; Chris J. Stanley, Jakub Plášil, Patricie Halodová: Pampaloite, AuSbTe, a new mineral from Pampalo gold mine, Finland. Mineralogical Magazine Vol. 83, Nr. 3 (2019) S. 393-400.

Other languages

German

Pampaloit

English

Pampaloite

CNMNC (IMA)-Number

IMA 2017-096

CNMNC symbol

Symbol

Ppl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 0T9EXBxxX0WsYrgl0nGCIQ
GUID (Global unique identifier) 5C443FD1-711C-455F-AC62-B825D2718221
Database ID 8478