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Lavoisierite

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Lavoisierit
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1587407144
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Lavoisierit
gelbbraune Kristalle von Lavoisierit, Punta Gensane, Viù-Tal, Turin, Piemont, Italien; BB ~ 1 mm
Copyright: Joy Desor; Contribution: openpit
Location: Italien/Piemont (Piemonte), Region/Turin (Torino), Provinz/Lanzotal (Valli di Lanzo)/Viùtal (Val di Viù)/Viù/Punta Gensane
Mineral: Lavoisierite
Image: 1587407144
License: Usage for Mineralienatlas project only
Lavoisierit

gelbbraune Kristalle von Lavoisierit, Punta Gensane, Viù-Tal, Turin, Piemont, Italien; BB 1 mm

Copyright: Joy Desor
Contribution: openpit 2020-04-20
Locality: Punta Gensane / Viù / Viùtal (Val di Viù) / Lanzotal (Valli di Lanzo) / Turin (Torino), Provinz / Piemont (Piemonte), Region / Italien

Collectors Summary

Color braungelb, orangegelb
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 6
Cleavages gut {001}
Crystal System orthorhombisch, Pnmm
Morphology nadelförmige bis prisamtisch-abgeflachte Kristalle; wenige mm lang; gestreckt entlang [010] und abgeflacht uaf {001}

Chemism

Chemical formula

Mn2+8[Al10(Mn3+Mg)][Si11P]O44(OH)12

Additional chem. information

Verwandt mit Sursassit und Ardennit

Chemical composition

Aluminium, Magnesium, Mangan, Silicium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 2036.5409263 u; Number of atoms in the formula: 100

Info

Empirical formula:

Mn8[Al10(MnMg)][Si11P]O44(OH)12

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.59

12

12.00

1.0079470

12.0953640

Oxygen

O

43.99

56

56.00

15.9994300

895.9680800

Magnesium

Mg

1.19

1

1.00

24.3050600

24.3050600

Aluminium

Al

13.25

10

10.00

26.9815382

269.8153820

Silicon

Si

15.17

11

11.00

28.0855300

308.9408300

Phosphorus

P

1.52

1

1.00

30.9737612

30.9737612

Manganese

Mn

24.28

9

9.00

54.9380499

494.4424491

Strunz 9th edition incl. updates

9.BJ.40

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
J: Gruppen(Soro)-Silikate mit Si3O10, Si4O11, etc. Anionen; Kationen in oktahedraler [6] und/oder größerer Koordination
40:Ardennit-Gruppe

Lapis Classification

VIII/C.34-015

VIII: SILIKATE
C: Gruppensilikate
34: Sonstige Gruppensilikate

Classification by Hölzel

9.BQ.240

9: SILICATES
B: Sorosilicates
Q: Si3O10 + SiO4-Group

IMA status

anerkannt - Mai 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Mineral status

anerkanntes Mineral

Optical Properties

Color

braungelb, orangegelb

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

Ri mean

1.750

Pleochroism

blassgelb parallel zu [010] und gelborange normal zur Richtung

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

59

Space Group

Pnmm

Cell parameters a (Å)

8.689

Cell parameters b (Å)

5.776

Cell parameters c (Å)

36.950

Cell parameters a/b or c/a

1.504

Cell parameters c/b

6.397

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

1854.434

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

4.62(m), 4.23(m), 3.167(m), 2.931(vs), 2.765(s), 2.598(s), 2.448(ms), 2.318(m)

Morphology

nadelförmige bis prisamtisch-abgeflachte Kristalle; wenige mm lang; gestreckt entlang [010] und abgeflacht uaf {001}

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6

Density (g/cm³)

3.543 (berechnet)

3.647 ( ρ calc. Mineralienatlas )

Cleavages

gut {001}

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Italien/Piemont (Piemonte), Region/Turin (Torino), Provinz/Lanzotal (Valli di Lanzo)/Viùtal (Val di Viù)/Viù/Punta Gensane

Type material

Museo di Storia Naturale e del Territorio, Universita` di Pisa, Calci (Pisa), Italy;
Museo Regionale di Scienze Naturali, Torino, Italy

Collection number of type material

19637 (Calci); M/U16359 (Torino)

Preface

Associations

Quarz, Glimmer, Sursassit, Piemontit, Spessartin, Braunit, Turmalin

Name from

Antoine-Laurent Lavoisier (1743-1794), französischer Chemiker und Biologe

Author (Name, Year)

Paolo Orlandi, Cristian Biagioni, Marco Pasero und Marcello Mellini (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817.

P. Orlandi, C. Biagioni, M. Pasero, and M. Mellini: Lavoisierite, Mn82+[Al10(Mn3+Mg)][Si11P]O44(OH)12, a new mineral from Piedmont, Italy: the link between “ardennite” and sursassite. Physics and Chemistry of Minerals Vol. 40 (2013) S. 239–249.

Fernando Cámara, G. Diego Gatta, Yulia Uvarova, Olivier C. Gagne, and Dmitriy I. Belakovskiy: New Mineral Names. American Mineralogist Vol. 99, Nr. 10 (2014) S. 2150-2158.

Other languages

German

Lavoisierit

English

Lavoisierite

Russian

Лавуазьерит

CNMNC (IMA)-Number

IMA 2012-009

CNMNC symbol

Symbol

Lvo

IDs

GUSID (Global unique identifier short form) fOjFCX2RLkqbaIDO5-cpkw
GUID (Global unique identifier) 09C5E87C-917D-4A2E-9B68-80CEE7E72993
Database ID 7402