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Braggite

Collectors Summary

Color weiß
Hardness (Mohs) 6.5
Crystal System tetragonal, P42/m

Chemism

Chemical formula

(Pt,Pd,Ni)S

Chemical composition

Nickel, Palladium, Platin, Schwefel

Unit weight: 186.908062 u; Number of atoms in the formula: 2

Info

Empirical formula:

(Pt0.6Pd0.3Ni0.1)S

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

17.16

1

50.00

32.0655000

32.0655000

Nickel

Ni

3.14

0.1

5.00

58.6934200

5.8693420

Palladium

Pd

17.08

0.3

15.00

106.4210000

31.9263000

Platinum

Pt

62.62

0.6

30.00

195.0782000

117.0469200

Analysis wt%

Ø Pt : 56.40, Pd : 20.30, Ni : 5.10, S : 18.20, PLT : 76.70 (Ref: American Mineralogist 78)

Strunz 9th edition incl. updates

2.CC.30

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
C: Metallsulfide, M : S = 1 : 1 (und ähnliche)
C: mit Nickel (Ni), Eisen (Fe), Cobalt (Co), usw.
30:Braggit-Gruppe

Lapis Classification

II/C.25-020

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

Classification by Hölzel

2.CC.110

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
C: With Pd,Pt, etc. - Coordination Number ~[4], Planar
1: Braggite-Group

Dana 8th edition

02.08.05.03

02: Sulfide Minerals
08: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
05: Cooperite Group

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

84

Space Group

P42/m

Cell parameters a (Å)

6.367

Cell parameters b (Å)

-

Cell parameters c (Å)

6.561

Cell parameters a/b or c/a

1.030

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volumne (ų)

265.974

X-Ray Powder Diffraction

3.71(50),
2.914(90),
2.848(100),
2.649(50),
2.610(80),
1.854(70),
1.731(50),
1.714(60)

XRD chart Braggite

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)

6.5

VHN (Hardness Vickers)

997 (100g)

Density (g/cm³)

9.38 (berechnet)

9.335 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Bannister & Hey, 1932

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 67

Other languages

German

Braggit

Spanish

Braggita

French

Braggite

English

Braggite

Russian

Брэггит

Simplified Chinese

硫镍钯铂矿

CNMNC symbol

Symbol

Bg

Locations with GPS information