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Potarite

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Potarit
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Potarit
Größe: 2 x 1,5 x 0,9 cm, Fundort: Serro Frio, Minas Gerais, Brasilien.
Copyright: Dan Weinrich; Contribution: thdun5
Location: Brasilien/Südosten (Região Sudeste)/Minas Gerais/Serro Frio (Cerrado Frio)
Mineral: Potarite
Image: 1271612940
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Potarit

Größe: 2 x 1,5 x 0,9 cm, Fundort: Serro Frio, Minas Gerais, Brasilien.
Copyright: Dan Weinrich
Contribution: thdun5 2010-04-18
Locality: Serro Frio (Cerrado Frio) / Minas Gerais / Südosten (Região Sudeste) / Brasilien

Collectors Summary

Color cremefarben bis weißlich-cremefarben
Streak color metallisch
Lustre Metallglanz
Hardness (Mohs) 3.5
Solubility +++ HNO3
Crystal System tetragonal, P4/mmm

Chemism

Chemical formula

PdHg

Chemical composition

Palladium, Quecksilber

Unit weight: 307.013 u; Number of atoms in the formula: 2

Info

Empirical formula:

PdHg

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Palladium

Pd

34.66

1

50.00

106.4210000

106.4210000
Mercury

Hg

65.34

1

50.00

200.5920000

200.5920000

Analysis wt%

Pd : 34.70, Hg : 65.30, PLT : 34.70 (Ref: berechnet)

Strunz 9th edition incl. updates

1.AD.25

1: Elemente (Metalle, intermetallische Legierungen, Metalloide u. Nichtmetalle, Carbide, Silicide, Nitride u. Phosphide)
A: Metalle und intermetallische Legierungen
D: Quecksilber-Amalgam-Familie
25:Palladiumamalgam-Gruppe

Lapis Classification

I/A.02-090

I: ELEMENTE
A: Metalle und intermetallische Verbindungen

Classification by Hölzel

1.AE.500

1: ELEMENTS
A: Metals, Intermetallic Compounds, and Alloys
E: Mercury & Amalgam-Group

Hey's Chemical Index of Minerals

01.67

01: Elements and Alloys (including the arsenides, antimonides and bismuthides of Cu, Ag and Au)

Dana 8th edition

01.02.04.04

01: Native Elements and Alloys
02: Native Elements with platinum group metals and alloys
04: Tetraferroplatinum group (Space Group P4/mmm)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

cremefarben bis weißlich-cremefarben

Streak color

metallisch

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

123

Space Group

P4/mmm

Cell parameters a (Å)

3.031

Cell parameters b (Å)

-

Cell parameters c (Å)

3.692

Cell parameters a/b or c/a

1.218

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volume (ų)

33.918

X-Ray Powder Diffraction

2.34(10), 2.14(5), 1.402(5), 1.274(8), 1.174(5), 1.144(5), 0.928(5), 0.850(8)
XRD chart Potarite

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)

3.5

VHN (Hardness Vickers)

132 (100g)

Density (g/cm³)

14.88 (gemessen) 15.09 (berechnet)

15.03 ( ρ calc. Mineralienatlas )

Instability

+++ HNO3

(Co-)Type locality

(Co-)Type locality

Guyana/Potaro-Siparuni, Region/Kangaruma, Distrikt/Potaro, Fluss/Kaietur Falls

Type material

Frankreich: MHN-Paris - Type: T: 125263 (don. JB Harrison)

United Kingdom: NHM-London - Type: T: BM 1924,192

USA: NMNH-Washington - Type: T: 095350 (Essequibo Fluss, Amu Creek; don. Govern. Guyana, durch JB Harrison, 1926)

Preface

Author (Name, Year)

Harrison, 1926

References

Harrison JB: Bull. Soc. fr. Min. (1926) 49, 5.

Monatshefte für Chemie 83 (1952), 287.

American Mineralogist 45 (1960), 1093.

Handbook of Mineralogy (Anthony et al.), 1 (1990), 419.

Mineralogical Magazine 63 (1999), 369.

Canadian Mineralogist 40 (2002), 341.

Other languages

German

Potarit

Spanish

Potarita

English

Potarite

French

Potarite

Russian

Потарит

Simplified Chinese

汞钯矿

Alternative Name

Japanese

ポタロ鉱

CNMNC symbol

Symbol

Ptr

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Gaq4zWONq0qV4jSCR6C78g
GUID (Global unique identifier) CDB8AA19-8D63-4AAB-95E2-348247A0BBF2
Database ID 3113