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Lapieite (Lapieit)

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Lapieit
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Lapieit
graumetallische Aggregate von Lapieit, Lapie River, St. Cyr Range, Watson Lake, Yukon, Kanada; BB < 5 mm
Copyright: mintreasure.com; Contribution: openpit
Location: Kanada/Yukon-Territorium/Watson Lake Mining District/St. Cyr Range/Lapie-Fluss
Mineral: Lapieite
Image: 1665336596
License: Usage for Mineralienatlas project only
Lapieit

graumetallische Aggregate von Lapieit, Lapie River, St. Cyr Range, Watson Lake, Yukon, Kanada; BB < 5 mm
Copyright: mintreasure.com
Contribution: openpit 2022-10-09
Locality: Lapie-Fluss / St. Cyr Range / Watson Lake Mining District / Yukon-Territorium / Kanada

Collectors Summary

Color stahlgrau
Hardness (Mohs) 4.75
Crystal System orthorhombisch, P212121

Chemism

Chemical formula

CuNiSbS3

Chemical composition

Antimon, Kupfer, Nickel, Schwefel

Unit weight: 340.19632 u; Number of atoms in the formula: 6

Info

Empirical formula:

CuNiSbS3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

28.28

3

50.00

32.0655000

96.1965000
Nickel

Ni

17.25

1

16.67

58.6934200

58.6934200
Copper

Cu

18.68

1

16.67

63.5463000

63.5463000
Antimony

Sb

35.79

1

16.67

121.7601000

121.7601000

Analysis wt%

Cu : 18.50, Ni : 17.10, Sb : 35.00, S : 27.70 (Ref: Canadian Mineralogist 84)

Strunz 9th edition incl. updates

2.GA.25

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
G: Sulfoarsenide, Sulfoantimonide, Sulfobismuthide
A: Insel(Neso)-Sulfarsenide, usw., ohne zusätzlichen Schwefel (S)
25:Lapieit-Gruppe

Lapis Classification

II/C.21-010

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

Classification by Hölzel

2.FA.300

2: SULFIDES
F: Sulfarsenites, Sulfantimonites, Sulfbismuthinites Trigonal Pyramids ~[AsS3]3-, ~[SbS3]3-, ~[BiS3]3-
A: Neso Sulfarsenites without additional S
3: Lapieite-Group

Dana 8th edition

03.04.04.01

03: Sulfides - Sulfosalts
04: Sulfides - Sulfosalts where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
04: Lapieite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Lapieite group

Optical Properties

Color

stahlgrau

Diaphaneity (Transparency)

opak

Crystallography

Crystal System

orthorhombisch

Class (H-M)

222

Space Group number

19

Space Group

P212121

Cell parameters a (Å)

7.422

Cell parameters b (Å)

12.508

Cell parameters c (Å)

4.900

Cell parameters a/b or c/a

0.593

Cell parameters c/b

0.392

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

454.888

X-Ray Powder Diffraction

3.178(90),
2.959(100),
2.769(20),
2.637(20),
2.229(20),
1.855(60),
1.837(90),
1.601(30)
XRD chart Lapieite

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

Physical Properties

Hardness (Mohs)

4.75

VHN (Hardness Vickers)

355 (50g)

Density (g/cm³)

4.966

4.967 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Kanada/Yukon-Territorium/Watson Lake Mining District/St. Cyr Range/Lapie-Fluss

Preface

Author (Name, Year)

Harris & Roberts & Thorpe & Jonasson & Criddle, 1984

References

Canadian Mineralogist 22 (1984), 561

IMA group assignments

Other languages

German

Lapieit

English

Lapieite

French

Lapieite

Spanish

Lapieíta

Russian

Лапиит

CNMNC (IMA)-Number

IMA 1983-002

CNMNC symbol

Symbol

Lap

Locations with GPS information