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Perraultite (Perraultit)

Pictures (2 Images total)

Perraultit (xx) in Albit
Views (File:
1244951796
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Perraultit (xx) in Albit
Kristallgröße: 9x2 mm; Fundort: Dmitrievka, Mariupol-Massiv, Azowsches Meer, Donezk Oblast, Ukraine
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Ukraine/Donezk (Donetsk), Oblast/Wolnowacha (Volnovakha), Rajon/Oktyabr'skii-Massiv (Mariupol'skii)/Dmytrivka/Stbr. Dmytrivka
Mineral: Perraultite
Image: 1244951796
License: Usage for Mineralienatlas project only
Perraultit (xx) in Albit

Kristallgröße: 9x2 mm; Fundort: Dmitrievka, Mariupol-Massiv, Azowsches Meer, Donezk Oblast, Ukraine
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-06-14
Locality: Stbr. Dmytrivka / Dmytrivka / Oktyabr'skii-Massiv (Mariupol'skii) / Wolnowacha (Volnovakha), Rajon / Donezk (Donetsk), Oblast / Ukraine
Perraultit in Albit
Views (File:
1244951858
): 951
Perraultit in Albit
größter Kristall: 7,5 x 3,0 x 1,0 mm; Fundort: Dmitrievka, Mariupol-Massiv, Azowsches Meer, Donezk Oblast, Ukraine
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Ukraine/Donezk (Donetsk), Oblast/Wolnowacha (Volnovakha), Rajon/Oktyabr'skii-Massiv (Mariupol'skii)/Dmytrivka/Stbr. Dmytrivka
Mineral: Perraultite
Image: 1244951858
License: Usage for Mineralienatlas project only
Perraultit in Albit

größter Kristall: 7,5 x 3,0 x 1,0 mm; Fundort: Dmitrievka, Mariupol-Massiv, Azowsches Meer, Donezk Oblast, Ukraine
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-06-14
Locality: Stbr. Dmytrivka / Dmytrivka / Oktyabr'skii-Massiv (Mariupol'skii) / Wolnowacha (Volnovakha), Rajon / Donezk (Donetsk), Oblast / Ukraine

Collectors Summary

Color braun
Streak color weiß
Hardness (Mohs) 4
Cleavages sehr gut {001}
Fracture uneben bis unregelmäßig
Solubility - kalte verdünnte Säuren
Crystal System monoklin,

Chemism

Chemical formula

NaBaMn2+4Ti2(Si2O7)2O2(OH)2F

Chemical composition

Barium, Mangan, Natrium, Silicium, Titan, Fluor, Sauerstoff, Wasserstoff

Unit weight: 897.15002705 u; Number of atoms in the formula: 33

Info

Empirical formula:

NaBaMn4Ti2(Si2O7)2O2(OH)2F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.22

2

6.06

1.0079470

2.0158940
Oxygen

O

32.10

18

54.55

15.9994300

287.9897400
Fluorine

F

2.12

1

3.03

18.9984033

18.9984033
Sodium

Na

2.56

1

3.03

22.9897702

22.9897702
Silicon

Si

12.52

4

12.12

28.0855300

112.3421200
Titanium

Ti

10.67

2

6.06

47.8671000

95.7342000
Manganese

Mn

24.49

4

12.12

54.9380499

219.7521996
Barium

Ba

15.31

1

3.03

137.3277000

137.3277000

Analysis wt%

Na2O : 3.52, K2O : 2.68, MnO : 31.14, FeO : 1.12, BaO : 8.88, SiO2 : 27.32, TiO2 : 9.44, Nb2O5 : 13.35, H2O : 3.49, F : 0.84 (Ref: American Mineralogist 91)

Strunz 9th edition incl. updates

9.BE.67

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

Lapis Classification

VIII/C.14-030

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

Classification by Hölzel

9.BH.240

9: SILICATES
B: Sorosilicates
H: Rosenbuschite-Lamprophyllite-Group

Dana 8th edition

78.01.05.02

78: Unclassified Silicate Minerals
01: Unclassified silicates possible nesosilicates
05: Jinshianghite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

braun

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.035
Birefringence chart\! Perraultite title=Birefringence chart Perraultite

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

1.785

RI value β

1.81

RI value γ / ε

1.82

Ri mean

1.805

2V angle

Biaxial (-) 66°

Crystallography

Crystal System

monoklin

Cell parameters a (Å)

10.741(6)

Cell parameters b (Å)

13.841(8)

Cell parameters c (Å)

11.079(6)

Cell parameters a/b or c/a

0.776

Cell parameters c/b

0.8

Cell parameters α

108.174(6)

Cell parameters β

99.186(6)

Cell parameters γ

89.99(1)

Z

4

Volume (ų)

1625.949

X-Ray Powder Diffraction

10.43(40),
3.573(10),
3.474(100),
3.186(10),
2.867(10),
2.789(10),
2.606(40),
2.084(10)
XRD chart Perraultite

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)

4

VHN (Hardness Vickers)

190 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.16

3.665 ( ρ calc. Mineralienatlas )

Cleavages

sehr gut {001}

Fracture

uneben bis unregelmäßig

Tenacity

sehr spröde

Instability

- kalte verdünnte Säuren

(Co-)Type locality

(Co-)Type locality

Kanada/Québec, Provinz/Montérégie, Region/La Vallée-du-Richelieu RCM/Mont Saint-Hilaire

Preface

Author (Name, Year)

Chao, 1991

References

Canadian Mineralogist 44 (2006), 1273.

Elena Sokolova; Maxwell C. Day; Frank C. Hawthorne; Atali A. Agakhanov; Fernando Cámara, Yulia A. Uvarova, Giancarlo Della Ventura:From Structure Topology to Chemical Composition. XXIX. Revision of the Crystal Structure of Perraultite, NaBaMn4Ti2(Si2O7)2O2(OH)2F, a Seidozerite-Supergroup TS-Block Mineral from the Oktyabr'skii Massif, Ukraine, and Discreditation of Surkhobite. The Canadian Mineralogist Vol. 59, Nr. 2 (2021) S. 365-379.

Other languages

German

Perraultit

Spanish

Perraultita

French

Perraultite

English

Perraultite

Russian

Перротит

Alternative Name

Lepleite (of Pekov)

Lepleyite

CNMNC (IMA)-Number

IMA 1984-033

CNMNC symbol

Symbol

Prt

Locations with GPS information

IDs

GUSID (Global unique identifier short form) xaIJup1VkE-l1h8nNel3wA
GUID (Global unique identifier) BA09A2C5-559D-4F90-A5D6-1F2735E977C0
Database ID 3001