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Cuprocopiapite (Cuprocopiapit)

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Cuprocopiapit
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Cuprocopiapit
Bildbreite: 2 mm, Fundort: Alcaparrosa Mine, Cerritos Bayos, Calama, Provinz Antofagasta, Chile.
Copyright: Luigi Chiappino; Contribution: thdun5
Location: Chile/Antofagasta, Region (II. Region)/El Loa, Provinz/Calama/Cerritos Bayos/Alcaparrosa Mine
Mineral: Cuprocopiapite
Image: 1271589729
Rating: 3.5 (votes: 2)
License: Usage for Mineralienatlas project only
Cuprocopiapit

Bildbreite: 2 mm, Fundort: Alcaparrosa Mine, Cerritos Bayos, Calama, Provinz Antofagasta, Chile.
Copyright: Luigi Chiappino
Contribution: thdun5 2010-04-18
Locality: Alcaparrosa Mine / Cerritos Bayos / Calama / El Loa, Provinz / Antofagasta, Region (II. Region) / Chile

Collectors Summary

Color grünlichgelb
Streak color blassgelb
Hardness (Mohs) 2.50 - 3.00
Solubility +++ H2O
Crystal System triklin, P1

Chemism

Chemical formula

CuFe43+(SO4)6(OH)2·20H2O

Chemical composition

Eisen, Kupfer, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 1257.627654 u; Number of atoms in the formula: 99

Info

Empirical formula:

CuFe4(SO4)6(OH)2·20H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.37

42

42.42

1.0079470

42.3337740
Oxygen

O

58.52

46

46.46

15.9994300

735.9737800
Sulfur

S

15.30

6

6.06

32.0655000

192.3930000
Iron

Fe

17.76

4

4.04

55.8452000

223.3808000
Copper

Cu

5.05

1

1.01

63.5463000

63.5463000

Analysis wt%

CuO : 5.72, Fe2O3 : 27.66, Al2O3 : 1.47, SO3 : 41.62, H2O : 23.51 (Ref: American Mineralogist 38)

Strunz 9th edition incl. updates

7.DB.35

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
B: mit mittelgroßen Kationen; isolierte Oktaeder und begrenzte Einheiten
35:Copiapit-Gruppe

Lapis Classification

VI/D.10-060

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
10: Mittelgroße Kationen; Copiapit-Gruppe

Classification by Hölzel

7.DC.130

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
C: Copiapite-Group

Dana 8th edition

31.10.05.03

31: Hydrated Sulfates Containing Hydroxyl or Halogen
10: Hydrated Sulfates Containing Hydroxyl or Halogen miscellaneous
05: Copiapite Group

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Copiapite group

Optical Properties

Color

grünlichgelb

Streak color

blassgelb

max. Birefringence

0.062
Birefringence chart\! Cuprocopiapite title=Birefringence chart Cuprocopiapite

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

1.558

RI value β

1.575

RI value γ / ε

1.620

Ri mean

1.584

2V angle

Biaxial (+) 63°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

7.34

Cell parameters b (Å)

18.19

Cell parameters c (Å)

7.28

Cell parameters a/b or c/a

0.404

Cell parameters c/b

0.400

Cell parameters α

93.85

Cell parameters β

101.50

Cell parameters γ

99.38

Z

1

Volumne (ų)

934.734

X-Ray Powder Diffraction

8.81(80),
6.32(40),
5.82(50),
3.90(30),
3.76(30),
3.56(100),
3.29(30),
3.08(40)
XRD chart Cuprocopiapite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.50 - 3.00

VHN (Hardness Vickers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.13 (gemessen)

2.234 ( ρ calc. Mineralienatlas )

Instability

+++ H2O

(Co-)Type locality

(Co-)Type locality

Chile/Antofagasta, Region (II. Region)/El Loa, Provinz/Calama/Chuquicamata District/Chuquicamata Mine

Preface

Author (Name, Year)

Bandy, 1938

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 168

IMA group assignments

Other languages

German

Cuprocopiapit

Spanish

Cuprocopiapita

English

Cuprocopiapite

French

Cuprocopiapite

Russian

Купрокопиапит

Simplified Chinese

铜叶绿矾

CNMNC symbol

Symbol

Cucpi

Locations with GPS information