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Rruffite

Pictures (2 Images total)

Rruffit
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Rruffit

Aggregatgröße: 0,3 mm, Fundort: Maria Catalina Mine, Pampa Larga, Tierra Amarilla, Copiapó, Provinz, III. Region, Chile

Copyright: Luigi Mattei
Contribution: thdun5 2011-02-20
Locality: Maria Catalina Mine / Pampa Larga / Tierra Amarilla / Copiapó, Provinz / Atacama, Region (III. Region) / Chile
Rruffit
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Rruffit

Mina Jote, Atacama, Chile; hellhimmelblaue xx; Bildbreite ca. 1,5 mm

Collection: Hans-Jürgen Haas
Copyright: Chr. Rewitzer
Contribution: sulzbacher 2017-09-20
Locality: Mina Jote / Pampa Larga / Tierra Amarilla / Copiapó, Provinz / Atacama, Region (III. Region) / Chile

Collectors Summary

Lustre Glasglanz
Hardness (Mohs) 3
Crystal System monoklin, P21/c

Chemism

Chemical formula

CuCa2(AsO4)2·2H2O

Additional chem. information

Roselit-Familie

Chemical composition

Arsen, Calcium, Kupfer, Sauerstoff, Wasserstoff

Unit weight: 457.572392 u; Number of atoms in the formula: 19

Info

Empirical formula:

CuCa2(AsO4)2·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.88

4

21.05

1.0079470

4.0317880

Oxygen

O

34.97

10

52.63

15.9994300

159.9943000

Calcium

Ca

17.52

2

10.53

40.0784000

80.1568000

Copper

Cu

13.89

1

5.26

63.5463000

63.5463000

Arsenic

As

32.75

2

10.53

74.9216020

149.8432040

Analysis wt%

As2O5 : 50.37, CuO : 17.47, CaO : 24.55, H2O : 7.87 (Ref: RRUFF)

Strunz 9th edition incl. updates

8.CG.10

8: Phosphate, Arsenate, Vanadate
C: Phosphate ohne weitere Anionen, mit H2O
G: Mit großen und mittelgroßen Kationen, RO4:H2O = 1:1
10:Roselith-Gruppe

Lapis Classification

VII/C.17-110

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
C: Wasserhaltige Phosphate, ohne fremde Anionen
17: Mittelgroße und große Kationen: Fe-Mn-Zn-Mg und Ca-(NH4) 1+; Fairfieldit-Roselith-Reihe

Classification by Hölzel

8.CD.940

8: PHOSPHATES ARSENATES VANADATES
C: Phosphates (-Anions +Water)
D: Phosphates, Valency: 1,2 for large, 2 for medsized Cations
9: very large: 2, large/medium=2/1, monoclinic Roselite-Group

IMA status

anerkannt - IMA Web-Seite - Jan. 2010

Mineral status

anerkanntes Mineral

Optical Properties

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.015

Birefringence chart\! Rruffite title=Birefringence chart Rruffite

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

1.725

RI value β

1.734

RI value γ / ε

1.740

Ri mean

1.733

2V angle

  • 80°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

5.862

Cell parameters b (Å)

12.785

Cell parameters c (Å)

5.703

Cell parameters a/b or c/a

0.459

Cell parameters c/b

0.446

Cell parameters α

90°

Cell parameters β

109.43

Cell parameters γ

90°

Z

2

Volumne (ų)

403.073

Kristall structure

Struktur ermittelt

X-Ray Powder Diffraction

5.087(42), 4.177(59), 3.800(41), 3.377(92), 3.190(56), 2.983(89), 2.827(100), 2.114(49)

XRD chart Rruffite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3

Density (g/cm³)

3.79 (gemessen) 3.77 (berechnet)

3.77 ( ρ calc. Mineralienatlas )

Preface

Name from

http://rruff.info in Anerkennung des Prjektes

Author (Name, Year)

Hexiong Yang, Robert A. Jenkins, Robert T. Downs, Stanley H. Evans, 20

References

http://rruff.info/all/R070431

Neue Mineralien - IMA Web-Seite - Jan. 2010

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Brandtite

Ca2(Mn,Mg)(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CG.10

Roselite

Ca2(Co,Mg)(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CG.10

Rruffite

CuCa2(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CG.10

Wendwilsonite

Ca2(Mg,Co)(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CG.10

Zincroselite

Ca2Zn(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CG.10

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Collinsite

Ca2(Mg,Fe2+)(PO4)2·2H2O

triklin : 1 : P1

VII/C.17-010

Hillite

Ca2(Zn,Mg)[PO4]2·2H2O

triklin : 1 : P1

VII/C.17-015

Messelite

Ca2(Fe2+,Mn)(PO4)2·2H2O

triklin : 1 : P1

VII/C.17-020

Fairfieldite

Ca2(Mn,Fe2+)(PO4)2·2H2O

triklin : 1 : P1

VII/C.17-030

Cassidyite

Ca2(Ni,Mg)(PO4)2·2H2O

triklin : 1 : P1

VII/C.17-040

Talmessite

Ca2Mg(AsO4)2·2H2O

triklin : 1 : P1

VII/C.17-050

Nickeltalmessite

Ca2Ni(AsO4)2·2H2O

triklin : 1 : P1

VII/C.17-055

Gaitite

Ca2Zn(AsO4)2·2H2O

triklin : 1 : P1

VII/C.17-060

Parabrandtite

Ca2Mn2+(AsO4)2·2H2O

triklin : 1, 1 : P1, P1

VII/C.17-070

Roselite-beta

Ca2Co(AsO4)2·2H2O

VII/C.17-080

Wendwilsonite

Ca2(Mg,Co)(AsO4)2·2H2O

monoklin : 2/m : P21/c

VII/C.17-090

Roselite

Ca2(Co,Mg)(AsO4)2·2H2O

monoklin : 2/m : P21/c

VII/C.17-100

Rruffite

CuCa2(AsO4)2·2H2O

monoklin : 2/m : P21/c

VII/C.17-110

Zincroselite

Ca2Zn(AsO4)2·2H2O

monoklin : 2/m : P21/c

VII/C.17-120

Brandtite

Ca2(Mn,Mg)(AsO4)2·2H2O

monoklin : 2/m : P21/c

VII/C.17-130

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Wendwilsonite

Ca2(Mg,Co)(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CD.900

Roselite

Ca2(Co,Mg)(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CD.910

Brandtite

Ca2(Mn,Mg)(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CD.920

Zincroselite

Ca2Zn(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CD.930

Rruffite

CuCa2(AsO4)2·2H2O

monoklin : 2/m : P21/c

8.CD.940

Other languages

German

Rruffit

English

Rruffite

IMA Number

IMA 2009-077

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Rruffit
Google-Bilder-Suche - search for: Rruffit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Rruffit

English pages

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Handbook-of-Mineralogy - search for: Rruffite
RRUFF - Raman, XRD and other mineral data - search for: Rruffite
RRUFF - References and PDF downloads - search for: Rruffite
American-Mineralogist-Crystal-Structure-Database - search for: Rruffite
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Mineral Dealer

German pages

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Locations with GPS information




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