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Enargite (Enargit)

Pictures (92 Images total)

Enargite
Views (File:
1519985497
): 1406
Enargite
Perfect quality Enargite specimen, from Quiruvilca Mine, Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru; Size 90 х 36 х 20 mm
Copyright: pegmatite; Contribution: pegmatite
Location: Peru/La Libertad, Region/Santiago de Chuco, Provinz/Quiruvilca District/Quiruvilca Mine (La Libertad Mine)
Mineral: Enargite
Image: 1519985497
Rating: 10 (votes: 1)
License: Usage for Mineralienatlas project only
Enargite

Perfect quality Enargite specimen, from Quiruvilca Mine, Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru; Size 90 х 36 х 20 mm
Copyright: pegmatite
Contribution: pegmatite 2018-03-02
Locality: Quiruvilca Mine (La Libertad Mine) / Quiruvilca District / Santiago de Chuco, Provinz / La Libertad, Region / Peru
Enargit
Views (File:
1103323888
): 4092
Enargit
schwarzmetallisch, hochglänzend, Kristalle bis 8 mm; Fundort: Quiruvilca, La Libertad Department, Peru
Copyright: berthold; Contribution: Mineralienatlas
Location: Peru/La Libertad, Region/Santiago de Chuco, Provinz/Quiruvilca District/Quiruvilca Mine (La Libertad Mine)
Mineral: Enargite
Image: 1103323888
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Enargit

schwarzmetallisch, hochglänzend, Kristalle bis 8 mm; Fundort: Quiruvilca, La Libertad Department, Peru
Copyright: berthold
Contribution: Mineralienatlas 2004-12-17
Locality: Quiruvilca Mine (La Libertad Mine) / Quiruvilca District / Santiago de Chuco, Provinz / La Libertad, Region / Peru
Enargit
Views (File:
1271694784
): 4412
Enargit
Größe: 2,08 mm; Fundort: Cave Madielle, Massa, Apuanische Alpen, Massa-Carrara Bezirk, Toskana, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Massa-Carrara, Provinz/Massa/Madielle Steinbruch-Basin/Madielle-Steinbrüche (Cave Madielle)
Mineral: Enargite
Image: 1271694784
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Enargit

Größe: 2,08 mm; Fundort: Cave Madielle, Massa, Apuanische Alpen, Massa-Carrara Bezirk, Toskana, Italien
Copyright: Matteo Chinellato
Contribution: Hg 2010-04-19
Locality: Madielle-Steinbrüche (Cave Madielle) / Madielle Steinbruch-Basin / Massa / Massa-Carrara, Provinz / Toskana (Toscana) / Italien
Enargit
Views (File:
1577038987
): 1118
Enargit
BB: 7 mm; hochglänzende Enargit xx mit Pyrit xx, FO: Excelsior Mine, Cerro de Pasco, Peru
Copyright: Harald Biecker; Contribution: Harald Biecker
Collection: Harald Biecker
Location: Peru/Pasco, Region/Pasco, Provinz/Cerro de Pasco/Excelsior Mine
Mineral: Enargite
Image: 1577038987
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Enargit

BB: 7 mm; hochglänzende Enargit xx mit Pyrit xx, FO: Excelsior Mine, Cerro de Pasco, Peru
Collection: Harald Biecker
Copyright: Harald Biecker
Contribution: Harald Biecker 2019-12-22
Locality: Excelsior Mine / Cerro de Pasco / Pasco, Provinz / Pasco, Region / Peru
Enargit
Views (File:
1525199249
): 404
Enargit
BB: 12 mm; Enargit mit Pyrit xx; Excelsior Mine, Cerro de Pasco; Peru
Copyright: Harald Biecker; Contribution: Harald Biecker
Collection: Harald Biecker
Location: Peru/Pasco, Region/Pasco, Provinz/Cerro de Pasco/Excelsior Mine
Mineral: Enargite, Pyrite
Image: 1525199249
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Enargit

BB: 12 mm; Enargit mit Pyrit xx; Excelsior Mine, Cerro de Pasco; Peru
Collection: Harald Biecker
Copyright: Harald Biecker
Contribution: Harald Biecker 2018-05-01
Locality: Excelsior Mine / Cerro de Pasco / Pasco, Provinz / Pasco, Region / Peru

You find additional specimen at the Geolitho Museum

Collectors Summary

Color grau zu hellblassrosa braun mit tief roten internen Reflektionen
Streak color schwarz
Lustre blendeartiger starker Metallglanz, matt
Hardness (Mohs) 3.5
Cleavages vollkommen {110}, deutlich {100}, {010}, undeutlich {001}
Fracture uneben
Solubility +++ Königswasser, HNO3
Crystal System orthorhombisch, Pmn21
Morphology prismatisch, säulig, stengelig

Chemism

Chemical formula

Cu3AsS4

Chemical composition

Arsen, Kupfer, Schwefel

Unit weight: 393.822502 u; Number of atoms in the formula: 8

Info

Empirical formula:

Cu3AsS4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

32.57

4

50.00

32.0655000

128.2620000
Copper

Cu

48.41

3

37.50

63.5463000

190.6389000
Arsenic

As

19.02

1

12.50

74.9216020

74.9216020

Analysis wt%

Cu : 48.67, Sb : 1.76, As : 17.91, S : 31.44 (Ref: Dana, 7th ed. 1)

Strunz 9th edition incl. updates

2.KA.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
K: Sulfoarsenate
A: Unterteilung 2.KA - 2.KB
05:Enargit-Gruppe

Lapis Classification

II/C.14-010

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

Classification by Hölzel

2.CB.700

2: SULFIDES
C: Sulfides (etc) with Me/S=1/1
B: With Zn,Cu (etc), Coordination Number ~[4] Framework of Cornersharing Tetrahedra: Sphalerite-Germanite-Family
7: Enargite-Sulvanite-Group

Dana 8th edition

03.02.01.01

03: Sulfides - Sulfosalts
02: Sulfides - Sulfosalts where z/y = 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

grau zu hellblassrosa braun mit tief roten internen Reflektionen

Streak color

schwarz

Diaphaneity (Transparency)

opak

Lustre

blendeartiger starker Metallglanz, matt

max. Birefringence

0.039
Birefringence chart\! Enargite title=Birefringence chart Enargite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

3.081

RI value β

3.089

RI value γ / ε

3.120

Ri mean

3.097

2V angle

Biaxial (+) 54°

Pleochroism

schwach

Anisotropism

Sehr stark, dunkel violett-rot oder in olivgrünen Tönen

Reflectivity: (Lambda nm) ↓, ↑, Ø

(400) 24.80, 26.20, 25.50
(420) 26.60, 26.00, 26.30
(440) 26.50, 25.60, 26.05
(460) 26.50, 25.90, 26.20
(480) 26.20, 25.80, 26.00
(500) 25.60, 25.60, 25.60
(520) 24.90, 25.30, 25.10
(540) 24.40, 25.20, 24.80
(560) 24.00, 25.20, 24.60
(580) 23.80, 25.40, 24.60
(600) 23.80, 25.90, 24.85
(620) 24.10, 26.50, 25.30
(640) 24.60, 26.90, 25.75
(660) 25.20, 26.90, 26.05
(680) 25.60, 26.80, 26.20
(700) 25.70, 26.70, 26.20
Reflection chart Enargite

Reflectivity Ø

25.57

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

31

Space Group

Pmn21

Cell parameters a (Å)

6.46

Cell parameters b (Å)

7.43

Cell parameters c (Å)

6.18

Cell parameters a/b or c/a

0.869

Cell parameters c/b

0.832

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

296.626

X-Ray Powder Diffraction

3.22(100),
2.87(80),
1.859(90),
1.731(60),
1.590(50),
1.075(50),
1.049(50),
0.819(50)
XRD chart Enargite

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

Morphology

prismatisch, säulig, stengelig

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3.5

VHN (Hardness Vickers)

302 (100g)

Density (g/cm³)

4.40 (berechnet) 4.45 (gemessen)

4.409 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {110}, deutlich {100}, {010}, undeutlich {001}

Fracture

uneben

Tenacity

spröde

Instability

+++ Königswasser, HNO3

(Co-)Type locality

(Co-)Type locality

Peru/Junín, Region/Yauli, Provinz/Morococha, Distrikt/San Francisco

Type material

Mineralogische Sammlung der TU Bergakademie Freiberg

Collection number of type material

6932 / D 8,8 (hist. Vitr. Breithaupt - LaSa)

Preface

Occurrences

in hydrothermalen Kupferlagerstätten und Erzgängen

Name from

Vom griechischen έναργής für "verschiedene", bezogen auf ihre Spaltung.

Author (Name, Year)

Breithaupt, 1850

Relevance, Usage

in Verwachsungen mit anderen Erzen als Cu-Erz

References

Handbook of Mineralogy (Anthony et al.), 1 (1990), 147

Varieties

Stannoenargite

Stannoenargit = Sn-haltiger Enargit

Other languages

German

Enargit

Spanish

Enargita

English

Enargite

French

Enargite

Russian

Энаргит

Traditional Chinese

硫砷鋼礦

Simplified Chinese

硫砷铜矿

Alternative Name

Argentian Enargite

Clarit

Clarita

Clarite

Clarite (of Sandberger)

Garbyit

Garbyita

Garbyite

Guayacanit

Guayacanita

Guayacanite

Japanese

硫砒銅鉱

CNMNC symbol

Symbol

Eng

Locations with GPS information

IDs

GUSID (Global unique identifier short form) nxaMxvHbEk2kyKEgz8Vzuw
GUID (Global unique identifier) C68C169F-DBF1-4D12-A4C8-A120CFC573BB
Database ID 1032