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Lopatkaite

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Lopatkaite
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Lopatkaite
Two extremely rare lopatkaite crystals. 0.5mm and 0.8mm. Not much in existence!
Copyright: Nekkhi Murtishi; Contribution: Nekkhi
Collection: Nekkhi Murtishi
Location: Iran/West-Aserbaidschan, Provinz/Sardasht, Landkreis/Barika Erzlagerstätte
Mineral: Lopatkaite
Image: 1621296971
License: Public Domain
Lopatkaite

Two extremely rare lopatkaite crystals. 0.5mm and 0.8mm. Not much in existence!
Collection: Nekkhi Murtishi
Copyright: Nekkhi Murtishi
Contribution: Nekkhi 2021-05-18
Locality: Barika Erzlagerstätte / Sardasht, Landkreis / West-Aserbaidschan, Provinz / Iran

Collectors Summary

Color Dark gray, black
Lustre Metallic
Crystal System monoklin, P21/c

Chemism

Chemical formula

Pb5Sb3AsS11

Additional chem. information

Homeotyp von Boulangerit

Chemical composition

Antimon, Arsen, Blei, Schwefel

Unit weight: 1828.972402 u; Number of atoms in the formula: 20

Info

Empirical formula:

Pb5Sb3AsS11

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

19.29

11

55.00

32.0655000

352.7205000
Arsenic

As

4.10

1

5.00

74.9216020

74.9216020
Antimony

Sb

19.97

3

15.00

121.7601000

365.2803000
Lead

Pb

56.65

5

25.00

207.2100000

1,036.0500000

Strunz 9th edition incl. updates

2.HC.15

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
H: Sulfosalze mit SnS als Vorbild
C: Nur mit [Blei] (Pb)
15:Boulangerit-Gruppe

IMA status

anerkannt - Neue Mineralien Feb. 2013; CNMNC Newsletter No. 15

Mineral status

anerkanntes Mineral

Optical Properties

Color

Dark gray, black

Diaphaneity (Transparency)

Opaque

Lustre

Metallic

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

8.0806

Cell parameters b (Å)

23.360

Cell parameters c (Å)

21.488

Cell parameters a/b or c/a

0.346

Cell parameters c/b

0.92

Cell parameters α

90°

Cell parameters β

100.709

Cell parameters γ

90°

Volume (ų)

3985.492

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

3.728(42), 3.722(38), 3.712(100), 3.296(36), 3.207(36), 2.804(42), 2.780(46), 2.779(40)
XRD chart Lopatkaite

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

(Co-)Type locality

(Co-)Type locality

Kanada/Ontario/Hastings Co./Centre Hastings Township/Madoc/Taylor Pit

Type material

Department of Materials Engineering and Physics, University of Salzburg, Salzburg, Austria

Collection number of type material

15008

Preface

Occurrences

Barika Erzlagerstätte / Sardasht, Landkreis / West-Aserbaidschan, Provinz / Iran

Rareness

Extremely rare

Author (Name, Year)

Dan Topa, Emil Makovicky, Hubert Putz and Georg Zagler (2013)

References

Topa, D., Makovicky, E., Putz, H. and Zagler, G. (2013) Lopatkaite, IMA 2012-083. CNMNC Newsletter No. 15, February 2013, page 11; Mineralogical Magazine, 77, 112.

Other languages

German

Lopatkait

English

Lopatkaite

CNMNC (IMA)-Number

IMA 2012-083

CNMNC symbol

Symbol

Lpk

Locations with GPS information

IDs

GUSID (Global unique identifier short form) ZpEF8cr8_EqM_TXy8FtN9Q
GUID (Global unique identifier) F1059166-FCCA-4AFC-8CFD-35F2F05B4DF5
Database ID 7546