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Sardignaite

Pictures (2 Images total)

Sardignait
Views (Image: 1379844752): 1186
Sardignait

Größe: 0,7 mm; Fundort: Su Senargiu mine, Sarroch, Cagliari, Sardinien, Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: Hg 2013-09-22
Locality: Su Senargiu mine / Sarroch / Cagliari, Metropolitanstadt / Sardinien (Sardegna), Region / Italien
Sardignait
Views (Image: 1379844668): 838
Sardignait

Größe: 0,7 mm; Fundort: Su Senargiu mine, Sarroch, Cagliari, Sardinien, Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: Hg 2013-09-22
Locality: Su Senargiu mine / Sarroch / Cagliari, Metropolitanstadt / Sardinien (Sardegna), Region / Italien

Collectors Summary

Fracture muschelig
Crystal System monoklin, P21/m

Chemism

Chem­ical formula

BiMo2O7(OH)·2H2O

Addi­tional chem. informa­tion

stark verwandt mit IMA2009-022

Chem­ical com­po­si­tion

Bismut, Molybdän, Sauerstoff, Wasserstoff

Unit weight: 565.898417 u; Number of atoms in the formula: 18

Info

Empirical formula:

BiMo2O7(OH)·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.89

5

27.78

1.0079470

5.0397350

Oxygen

O

28.27

10

55.56

15.9994300

159.9943000

Molybdenum

Mo

33.91

2

11.11

95.9420000

191.8840000

Bismuth

Bi

36.93

1

5.56

208.9803820

208.9803820

Anal­y­sis wt%

MoO3 : 50.87, Bi2O3 : 41.17, H2O : 7.96 (Ref: berechnet)

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.25-080

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

Clas­sifica­tion by Hölzel

7.GD.500

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
G: Molybdates and Wolframates
D: Molybdates and Wolframates (+Anions +Water)
5: Di-molybdates, Wolframates

IMA sta­tus

Neue Mineralien Nov. 2008 - IMA-WEB-Seite [anerkannt]

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

max. Birefrin­gence

high

RI value α / ω / n

2.04

RI value β

by

RI value γ / ε

GlD

Ri mean

2.040

2V angle

Biaxial (+) nd

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell param­e­ters a (Å)

5.780

Cell param­e­ters b (Å)

11.567

Cell param­e­ters c (Å)

6.334

Cell param­e­ters a/b or c/a

0.500

Cell param­e­ters c/b

0.548

Cell param­e­ters α

90°

Cell param­e­ters β

113.37

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

388.733

Kristall struc­ture

Neuer Strukturtyp

X-Ray Pow­der Diffrac­tion

5.79(25), 5.03(80), 3.327(28), 3.206(100), 3.120(32), 2.590(30), 2.115(30), 1.992(45)

XRD chart Sardignaite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.834 ( ρ calc. Mineralienatlas )

Frac­ture

muschelig

Tenac­ity

spröde

Preface

Author (Name, Year)

Paolo Orlandi, Marco Pasero, Simona Bigi (2010)

References

Paolo Orlandi, Marco Pasero, Simona Bigi: Sardignaite, a new mineral, the second known bismuth molybdate: description and crystal structure. Mineralogy and Petrology, Vol. 100, Issue 1 (2010) S. 17-22.

Neue Mineralien Nov. 2008 - IMA-WEB-Seite [anerkannt]

Ciriotti, M.E., Fascio, L. & Pasero, M. (2009): Italian Type Minerals. Edizioni Plus, Università di Pisa, Pisa, Italy, 357 pp.

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

Clinocervantite

Sb3+Sb5+O4

monoklin : 2/m : C2/c

IV/D.25-005

Cervantite

Sb3+Sb5+O4

orthorhombisch : mm2 : Pna21

IV/D.25-010

Stibiocolumbite

SbNbO4

orthorhombisch : mm2 : Pc21n

IV/D.25-020

Stibiotantalite

Sb3+TaO4

orthorhombisch : mm2 : Pc21n

IV/D.25-030

Bismutocolumbite

Bi(Nb,Ta)O4

orthorhombisch : mmm : Pcnn

IV/D.25-035

Bismutotantalite

Bi(Ta,Nb)O4

orthorhombisch : mmm : Pcnn

IV/D.25-040

Chiluite

Bi3Te6+Mo6+O10.5

IV/D.25-070

Gelosaite

BiMo6+(2-5x)Mo5+6xO7(OH)·H2O {0≤x≤0.4}

monoklin : 2/m : P21/n

IV/D.25-075

Mambertiite

BiMo5+2.80O8(OH)

triklin : 1 : P1

IV/D.25-077

Sardignaite

BiMo2O7(OH)·2H2O

monoklin : 2/m : P21/m

IV/D.25-080

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

Sardignaite

BiMo2O7(OH)·2H2O

monoklin : 2/m : P21/m

7.GD.500

Gelosaite

BiMo6+(2-5x)Mo5+6xO7(OH)·H2O {0≤x≤0.4}

monoklin : 2/m : P21/n

7.GD.510

CNMNC (IMA)-Number

IMA 2008-040

CNMNC symbol

Symbol

Sdi

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

German pages

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

English pages

Mindat - search for: Sardignaite
Webmineral - search for:Sardignaite
Handbook-of-Mineralogy - search for: Sardignaite
RRUFF - Raman, XRD and other mineral data - search for: Sardignaite
RRUFF - References and PDF downloads - search for: Sardignaite
American-Mineralogist-Crystal-Structure-Database - search for: Sardignaite
Athena - search for: Sardignaite

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Sardignait
Crystal-Treasure.com - search for: Sardignait
Bosse - search for: Sardignait

Locations with GPS information




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