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Naldrettite

Collectors Summary

Hardness (Mohs) 5
Cleavages keine
Fracture unregelmäßig
Crystal System orthorhombisch, Cmc21

Chemism

Chemical formula

Pd2Sb

Chemical composition

Antimon, Palladium

Unit weight: 334.6021 u; Number of atoms in the formula: 3

Info

Empirical formula:

Pd2Sb

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Palladium

Pd

63.61

2

66.67

106.4210000

212.8420000

Antimony

Sb

36.39

1

33.33

121.7601000

121.7601000

Analysis wt%

Pd : 63.49, Sb : 33.75 (Ref: Mineralogical Magazine 2005)

Strunz 9th edition incl. updates

2.AC.25

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
A: Legierungen und legierungsartige Verbindungen
C: Verbindungen von Halbmetallen mit Platin-Gruppen-Elementen (PGE)
25:Palladoarsenid-Gruppe

Lapis Classification

II/A.05-107

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
A: Legierungen und legierungsartige Verbindungen
5: mit Metallen der Platin-gruppe (v.a. Pd)

Classification by Hölzel

2.AC.370

2: SULFIDES
A: Alloys of Cu,Ag,Au,Ni,Pd with As,Sb,Bi,(Te)
C: With Pd
3: Stibiopalladinite-Palladoarsenide-Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

36

Space Group

Cmc21

Cell parameters a (Å)

3.391

Cell parameters b (Å)

17.555

Cell parameters c (Å)

6.957

Cell parameters a/b or c/a

0.193

Cell parameters c/b

0.396

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

414.143

X-Ray Powder Diffraction

2.407(34), 2.303(35), 2.245(100), 2.057(52), 2.001(40), 1.367(35), 1.284(42), 1.212(50)

XRD chart Naldrettite

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

Physical Properties

Hardness (Mohs)

5

VHN (Hardness Vickers)

393 (50g)

Density (g/cm³)

10.694 (berechnet)

10.732 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

unregelmäßig

Preface

Name from

Anthony James (Tony) Naldrett (23.61933 - 21.6.2020), Professor an der University of Toronto, für seine Beiträge zum Verständnis der Enstehung von Lagerstättten der Elemente der Platin-Gruppe. Ein Nachruf s. https://link.springer.com/content/pdf/10.1007/s12594-020-1529-6.pdf
Viele Einzelheiten siehe Michael Lesher; Louis J. Cabri; Andrew McDonald: Preface part I: Dedication: Professor Anthony James Naldrett (1933-2020). The Canadian Mineralogist Vol. 59, Nr. 6 (2021) S. 1277–1281. Und: Malte Junge; Frederick Ford; Andrew McDonald: Preface part II: Summary of contributions. The Canadian Mineralogist Vol. 59, Nr. 6 (2021) S. 1283–1284.

Author (Name, Year)

Cabri & McDonald & Stanley & Rudashevsky & Poirier & Durham & Mungall

References

Mineralogical Magazine 69 (2005), 89

Other languages

German

Naldrettit

Spanish

Naldrettita

French

Naldrettite

English

Naldrettite

Russian

Налдреттит

Alternative Name

Simplified Chinese

一锑二钯矿

CNMNC (IMA)-Number

IMA 2004-007

CNMNC symbol

Symbol

Nld

Locations with GPS information

IDs

GUSID (Global unique identifier short form) JMw4TKTMjkC11571mec9QA
GUID (Global unique identifier) 4C38CC24-CCA4-408E-B5D7-9EF599E73D40
Database ID 4447