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Perrierite-(Ce) (Perrierit-(Ce))

Pictures (9 Images total)

Perrierite-(Ce)
Views (File:
1201098628
): 1728
Perrierite-(Ce)
Bildbreite: 3 mm; Fundort: Mendig, Laacher See Vulkangebiet, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde
Mineral: Perrierite-(Ce)
Image: 1201098628
Rating: 8 (votes: 3)
License: Usage for Mineralienatlas project only
Perrierite-(Ce)

Bildbreite: 3 mm; Fundort: Mendig, Laacher See Vulkangebiet, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2008-01-23
Locality: Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Perrierit-(Ce)
Views (File:
1200832198
): 1221
Perrierit-(Ce)
Bildbreite: 3 mm; Fundort: Fundort: Laacher See Vulkangebiet, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Ahrweiler, Landkreis/Brohltal, Verbandsgem./Laacher See
Mineral: Perrierite-(Ce)
Image: 1200832198
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Perrierit-(Ce)

Bildbreite: 3 mm; Fundort: Fundort: Laacher See Vulkangebiet, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2008-01-20
Locality: Laacher See / Brohltal, Verbandsgem. / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland
Perrierit-(Ce)
Views (File:
1200756249
): 1067
Perrierit-(Ce)
Bildbreite: 3 mm; Fundort: Fundort: Laacher See Vulkangebiet, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Ahrweiler, Landkreis/Brohltal, Verbandsgem./Laacher See
Mineral: Perrierite-(Ce)
Image: 1200756249
Rating: 6 (votes: 2)
License: Usage for Mineralienatlas project only
Perrierit-(Ce)

Bildbreite: 3 mm; Fundort: Fundort: Laacher See Vulkangebiet, Eifel, Rheinland-Pfalz, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2008-01-19
Locality: Laacher See / Brohltal, Verbandsgem. / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland
Perrierit-(Ce)
Views (File:
1275669205
): 551
Perrierit-(Ce)
Bildbreite: 0,6 mm, Fundort: Bassano Romano, Viterbo, Latium, Italien
Copyright: Luigi Mattei; Contribution: thdun5
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Bassano di Sutri/Bassano Romano
Mineral: Perrierite-(Ce)
Image: 1275669205
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Perrierit-(Ce)

Bildbreite: 0,6 mm, Fundort: Bassano Romano, Viterbo, Latium, Italien
Copyright: Luigi Mattei
Contribution: thdun5 2010-06-04
Locality: Bassano Romano / Bassano di Sutri / Viterbo, Provinz / Latium (Lazio), Region / Italien
Perrierit-Ce
Views (File:
1501158947
): 791
Perrierit-Ce
In den Dellen Mendig; Bildbreite 2 mm
Copyright: Ulrich Hansper; Contribution: Ulrich Hansper
Collection: Ulrich Hansper
Location: Deutschland/Rheinland-Pfalz/Mayen-Koblenz-Kreis/Mendig, Verbandsgemeinde/In den Dellen (Grube Zieglowski)
Mineral: Perrierite-(Ce)
Image: 1501158947
Rating: 4 (votes: 1)
License: Usage for Mineralienatlas project only
Perrierit-Ce

In den Dellen Mendig; Bildbreite 2 mm
Collection: Ulrich Hansper
Copyright: Ulrich Hansper
Contribution: Ulrich Hansper 2017-07-27
Locality: In den Dellen (Grube Zieglowski) / Mendig, Verbandsgemeinde / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Perrierit-(Ce)
Views (File:
1174086965
): 884
Perrierit-(Ce)
Bildbreite: 3 mm; Fundort Laacher See-Vulkangebiet, Eifel, Deutschland
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Rheinland-Pfalz/Ahrweiler, Landkreis/Brohltal, Verbandsgem./Laacher See
Mineral: Perrierite-(Ce)
Image: 1174086965
License: Usage for Mineralienatlas project only
Perrierit-(Ce)

Bildbreite: 3 mm; Fundort Laacher See-Vulkangebiet, Eifel, Deutschland
Copyright: Stephan Wolfsried
Contribution: Hg 2007-03-17
Locality: Laacher See / Brohltal, Verbandsgem. / Ahrweiler, Landkreis / Rheinland-Pfalz / Deutschland

Collectors Summary

Color braunschwarz
Streak color schwarz, braunschwarz, braunrot
Lustre Harzglanz, Glasglanz
Hardness (Mohs) 5.5
Fracture uneben, muschelig
Solubility +++ heiße konz. H2SO4
Crystal System monoklin, P21/a

Chemism

Chemical formula

Ce4MgFe3+2Ti2O8(Si2O7)2

Chemical composition

Cerium, Eisen, Magnesium, Silicium, Titan, Sauerstoff

Unit weight: 1256.52364 u; Number of atoms in the formula: 35

Info

Empirical formula:

Ce4MgFe2Ti2O8(Si2O7)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

28.01

22

62.86

15.9994300

351.9874600
Magnesium

Mg

1.93

1

2.86

24.3050600

24.3050600
Silicon

Si

8.94

4

11.43

28.0855300

112.3421200
Titanium

Ti

7.62

2

5.71

47.8671000

95.7342000
Iron

Fe

8.89

2

5.71

55.8452000

111.6904000
Cerium

Ce

44.60

4

11.43

140.1161000

560.4644000

Strunz 9th edition incl. updates

9.BE.70

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
70:Chevkinit-Gruppe

Lapis Classification

VIII/C.17-030

VIII: SILIKATE
C: Gruppensilikate
17: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F); Chevkinit-Reihe

Classification by Hölzel

9.BK.100

9: SILICATES
B: Sorosilicates
K: Perrierite-Group

Dana 8th edition

56.02.08.03

56: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O
02: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O with cations in [4] and/or >[4] coordination
08: Perierite - Chevkinite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Chevkinite group  ⇒ Perrierite subgroup

Optical Properties

Color

braunschwarz

Streak color

schwarz, braunschwarz, braunrot

Diaphaneity (Transparency)

durchscheinend

Lustre

Harzglanz, Glasglanz

max. Birefringence

0.12
Birefringence chart\! Perrierite-(Ce) title=Birefringence chart Perrierite-(Ce)

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

1.90 - 195

RI value β

2.01

RI value γ / ε

2.02 - 2.06

Ri mean

1.992

2V angle

Biaxial (-) 60° (gemessen)

Orientation

Z = b, X ^ a = 24

Dispersion

stark, r > v

Absorption

Z = Y > X

Pleochroism

sehr stark, gelb, gelbbraun, rot

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

13.61

Cell parameters b (Å)

5.68

Cell parameters c (Å)

11.73

Cell parameters a/b or c/a

2.396

Cell parameters c/b

2.065

Cell parameters α

90°

Cell parameters β

113.50

Cell parameters γ

90°

Z

2

Volumne (ų)

831.577

X-Ray Powder Diffraction

4.06(40),
3.55(40),
2.97(100),
2.93(100),
2.82(50),
2.68(50),
2.15(50),
1.943(60)
XRD chart Perrierite-(Ce)

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.86 (berechnet) 4.3 (gemessen)

5.018 ( ρ calc. Mineralienatlas )

Fracture

uneben, muschelig

Radioactivity

durch den Gehalt von Thorium vorhanden

Instability

+++ heiße konz. H2SO4

(Co-)Type locality

(Co-)Type locality

Italien/Latium (Lazio), Region/Rom, Provinz/Nettuno

Preface

Name from
Carlo Perrier
Carlo Perrier
(1886 - 1948), italienischer Mineraloge; Namensgeber für das Mineral Perrierit
Copyright: Unbekannter Autor; Contribution: Stefan
Image: 1374831736
License: Usage for Mineralienatlas project only

Carlo Perrier (1886 - 1948), italienischer Mineraloge

Author (Name, Year)

Bonatti & Gottardi, 1950

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 640

Rendiconti dell'Accademia Nazionale dei Lincei, Serie VIII 9 (1950), 361

American Mineralogist 59 (1974), 1277

R. Macdonald, B. Bagiński, P. M. Kartashov, D. Zozulya and P. Dzierżanowski - Chevkinite-group minerals from Russia and Mongolia: new compositional data from metasomatites and ore deposits - Mineralogical Magazine, June 2012, Vol. 76(3), pp. 535–549 http://rruff.info/uploads/MM76_535.pdf

IMA group assignments

Varieties

Strontium Perrierite

Zwischenglied der Perrierit-(Ce)-Rengeit-Mischkristallserie.

Other languages

German

Perrierit-(Ce)

Spanish

Perrierita-(Ce)

French

Perrierite-(Ce)

English

Perrierite-(Ce)

Russian

Перрьерит-(Ce)

Japanese

ﾍﾟﾘｴﾙ石

Alternative Name

German

Perrierit

Spanish

Perrierita

Perrierite

CNMNC symbol

Symbol

Prr-Ce

Locations with GPS information