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Gelosaite

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Gelosait
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Gelosait

Kingsgate, New South Wales, Australien. BB: 0,7mm

Copyright: Mabu
Contribution: Mabu 2017-11-21
Locality: Kingsgate / Gough Co. / New South Wales / Australien

Collectors Summary

Color gelb, gelbgrün, blassblau
Streak color weiß
Lustre Diamantglanz
Hardness (Mohs) ~3
Fracture muschelig
Crystal System monoklin, P21/n

Chemism

Chem­ical formula

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

Empir­ical formula (anal­y­sis)

Bi1.03Mo6+1.47Mo5+0.62H3.01O9

Addi­tional chem. informa­tion

Neuer Strukturtyp

Chem­ical com­po­si­tion

Bismut, Molybdän, Sauerstoff, Wasserstoff

Unit weight: 562.79736393 u; Number of atoms in the formula: 15.13

Info

Empirical formula:

Bi1.03Mo1.47Mo0.62H3.01O9

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.54

3.01

19.89

1.0079470

3.0339205

Oxygen

O

25.59

9

59.48

15.9994300

143.9948700

Molybdenum

Mo

35.63

2.09

13.81

95.9420000

200.5187800

Bismuth

Bi

38.25

1.03

6.81

208.9803820

215.2497935

Anal­y­sis wt%

MoO3 : 37.85, Mo2O5 : 14.97, Bi2O3 : 42.87, H2O : 4.85 (Ref: American Mineralogist 2011)

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.25-075

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

Clas­sifica­tion by Hölzel

7.GD.510

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

IMA sta­tus

anerkannt - Neue Mineralien - IMA Web-Seite, Sept. 2009

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

gelb, gelbgrün, blassblau

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Diamantglanz

RI value α / ω / n

2.04

Ri mean

2.040

2V angle

Biaxial

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/n

Cell param­e­ters a (Å)

5.857

Cell param­e­ters b (Å)

9.052

Cell param­e­ters c (Å)

13.992

Cell param­e­ters a/b or c/a

0.647

Cell param­e­ters c/b

1.546

Cell param­e­ters α

90°

Cell param­e­ters β

100.43

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

729.564

Kristall struc­ture

Neuer Strukturtyp

X-Ray Pow­der Diffrac­tion

4.83(100), 3.41(21), 3.30(25), 3.015(50), 2.755(60), 2.080(50), 1.688(20), 1.509(30)

XRD chart Gelosaite

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)

~3

VHN (Hard­ness Vick­ers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.114 - 5.316 (berechnet)

5.124 ( ρ calc. Mineralienatlas )

Frac­ture

muschelig

Tenac­ity

spröde

Preface

Author (Name, Year)

Paolo Orlandi, 2009

References

Neue Mineralien - IMA Web-Seite, Sept. 2009

American Mineralogist, Volume 96, pages 268–273, 2011 http://rruff.info/uploads/AM96_268.pdf

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 2009-022

CNMNC symbol

Symbol

Gel

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Желозаит

Mineral Dealer

German pages

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

Locations with GPS information