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Penroseite

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Penroseit
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Penroseit
Größe: 4,9 x 2,4 x 1,8 cm, Fundort: Mina Virgen de Surumi (Pacajake Mine), Potosi, Bolivien.
Copyright: Rob Lavinsky; Contribution: thdun5
Location: Bolivien/Potosi, Departamento/Chayanta, Provinz/Pakajake Canyon/Mina Virgen de Surumi (Pacajake Mine)
Mineral: Penroseite
Image: 1257946461
Rating: 7 (votes: 3)
License: Usage for Mineralienatlas project only
Penroseit

Größe: 4,9 x 2,4 x 1,8 cm, Fundort: Mina Virgen de Surumi (Pacajake Mine), Potosi, Bolivien.

Copyright: Rob Lavinsky
Contribution: thdun5 2009-11-11
Locality: Mina Virgen de Surumi (Pacajake Mine) / Pakajake Canyon / Chayanta, Provinz / Potosi, Departamento / Bolivien

Collectors Summary

Color cremig grauweiß
Streak color schwarz
Hardness (Mohs) 5.5
Solubility +++ HNO3
Crystal System kubisch, Pa3

Chemism

Chemical formula

(Ni,Co,Cu)Se2

Chemical composition

Kobalt, Kupfer, Nickel, Selen

Unit weight: 217.17664227 u; Number of atoms in the formula: 3

Info

Empirical formula:

(Ni0.6Co0.3Cu0.1)Se2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Cobalt

Co

8.14

0.3

10.00

58.9332009

17.6799603

Nickel

Ni

16.22

0.6

20.00

58.6934200

35.2160520

Copper

Cu

2.93

0.1

3.33

63.5463000

6.3546300

Selenium

Se

72.72

2

66.67

78.9630000

157.9260000

Analysis wt%

Pb : 10.88, Hg : 4.12, Ag : 5.00, Cu : 3.72, Fe : 0.72, Co : 0.71, Ni : 9.88, Se : 66.59, S : 0.52 (Ref: Dana, 7th ed. 1)

Strunz 9th edition incl. updates

2.EB.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
E: Metallsulfide mit M:S >= 1:2
B: M:S = 1:2, mit Fe, Co, Ni, PGE, usw.
05:Pyrit-Gruppe

Lapis Classification

II/D.17-090

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
D: Sulfide mit Metall : S,Se,Te < 1:1
17: Pyrit-Gruppe

Classification by Hölzel

2.EB.170

2: SULFIDES
E: Me/S=1/2 (also < 1/2)
B: With Fe,Co,Ni,PGE Pyrite, Marcasite Family
1: Pyrite-Group

Dana 8th edition

02.12.01.04

02: Sulfide Minerals
12: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:2
01: Pyrite Group (Isometric: Pa3)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

cremig grauweiß

Streak color

schwarz

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

kubisch

Class (H-M)

m3

Space Group number

205

Space Group

Pa3

Cell parameters a (Å)

5.991

Cell parameters b (Å)

-

Cell parameters c (Å)

-

Cell parameters a/b or c/a

1

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

215.029

X-Ray Powder Diffraction

3.02(30),
2.67(100),
2.45(100),
1.806(90),
1.662(30),
1.599(40),
1.304(20),
1.151(30)

XRD chart Penroseite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

542 (100g)

Density (g/cm³)

6.58 - 6.74 / Durchschnittlich = 6.66

6.708 ( ρ calc. Mineralienatlas )

Instability

+++ HNO3

Preface

Author (Name, Year)

Gordon, 1926

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 395

Other languages

German

Penroseit

English

Penroseite

French

Penroseite

Spanish

Penroseíta

Russian

Пенрозеит

Russian

Пенроузит

Alternative Name

Blockit

Spanish

Blockita

English

Blockite

CNMNC symbol

Symbol

Pen

Locations with GPS information

IDs

GUSID (Global unique identifier short form) FDKppz01gU-sesW7Vcmpug
GUID (Global unique identifier) A7A93214-353D-4F81-AC7A-C5BB55C9A9BA
Database ID 2984