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Mambertiite

Collectors Summary

Color blass gelb, honiggelb
Streak color weiß
Lustre Diamantglanz
Fracture muschelig
Crystal System triklin, P1
Morphology {001} abgeflachte Kristalle, bis zu 1mm in der Länge und wenige μm dick

Chemism

Chemical formula

BiMo5+2.80O8(OH)

Empirical formula (analysis)

Bi0.99(Mo5+2.74W0.05)Σ2.79O7.97(OH)1.03

Chemical composition

Bismut, Molybdän, Sauerstoff, Wasserstoff

Unit weight: 623.99676359 u; Number of atoms in the formula: 13.81

Info

Empirical formula:

Bi0.99(Mo2.74W0.05)O7.97(OH)1.03

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.17

1.03

7.46

1.0079470

1.0381854

Oxygen

O

23.08

9

65.17

15.9994300

143.9948700

Molybdenum

Mo

42.13

2.74

19.84

95.9420000

262.8810800

Tungsten

W

1.47

0.05

0.36

183.8410000

9.1920500

Bismuth

Bi

33.16

0.99

7.17

208.9803820

206.8905782

Analysis wt%

Mo2O5 : 59.59, Bi2O3 : 36.96, WO3 : 2.03, H2O calc : 1.48, Total : 100.06

Strunz 9th edition incl. updates

4.E.

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
E: Metall: Sauerstoff = < 1 :2

Lapis Classification

IV/D.25-077

IV: OXIDE
D: Oxide mit Verhältnis Metall : Sauerstoff = 1:2 (MO2 und verwandte Verbindungen)
25: Stibiotantalit-Gruppe

IMA status

anerkannt - CNMNC Newsletter No. 18, Dezember 2013

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass gelb, honiggelb

Streak color

weiß

Lustre

Diamantglanz

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

5.854

Cell parameters b (Å)

7.637

Cell parameters c (Å)

9.050

Cell parameters a/b or c/a

0.767

Cell parameters c/b

1.185

Cell parameters α

112.85°

Cell parameters β

90.04°

Cell parameters γ

102.58°

Z

2

Volume (ų)

362.257

X-Ray Powder Diffraction

8.3(ms), 4.92(s), 3.417(vs), 3.136(ms), 2.850(ms)

Morphology

{001} abgeflachte Kristalle, bis zu 1mm in der Länge und wenige μm dick

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

5.72 ( ρ calc. Mineralienatlas )

Fracture

muschelig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Italien/Sardinien (Sardegna), Region/Cagliari, Metropolitanstadt/Sarroch/Su Senargiu mine

Type material

Museo di Storia Naturale, Università di Pisa, Calci (Pisa), Italien

Collection number of type material

19682

Paragenesis of type material

Ferrimolybdit, Muskovit, Quarz, Sardignait und Wulfenit

Preface

Occurrences

in schmalen Spalten von Quarz

Name from

Der Name ehert den italienischen Mineralsammler Marzio Mamberti (* 1959) für seinen Beitrag zum Verständnis der Sardinischen Mineralogie.

Author (Name, Year)

Paolo Orlandi, Cristian Biagioni, Marco Pasero, Francesco Demartin und Italo Campostrini (2013)

References

Orlandi, P., Biagioni, C., Pasero, M., Demartin, F. und Campostrini, I. (2013) Mambertiite, IMA 2013-098. CNMNC Newsletter No. 18, December 2013, page 3257; Mineralogical Magazine, 77, 3249-3258.

Orlandi P, Biagioni C, Pasero M, Demartin F, Campostrini I, Merlino S (2015) Mambertiite, BiMo5+2.80O8(OH), a new mineral from Su Seinargiu, Sardinia, Italy: occurrence, crystal structure, and relationships with gelosaite. European Journal of Mineralogy 27, 405-415

Other languages

German

Mambertiit

English

Mambertiite

CNMNC (IMA)-Number

IMA 2013-098

CNMNC symbol

Symbol

Mam

Locations with GPS information

IDs

GUSID (Global unique identifier short form) OJyQL6YlwEiN6cvQXewJXA
GUID (Global unique identifier) 2F909C38-25A6-48C0-8DE9-CBD05DEC095C
Database ID 7714