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Orthobrannerite

Pictures (2 Images total)

Gold mit Orthobrannerit
Views (Image: 1583912380): 796
Gold mit Orthobrannerit (SNr: Au-Gold-2-1-107)

Gold mit Orthobrannerit auf Quarz von Brusson, Val d´Aosta, Italien. Bildbreite etwa 6 mm.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2020-03-11
Locality: Bergwerk Brusson (Minera di Brusson) / Brusson / Ayastal (Valle d'Ayas) / Aostatal (Valle d'Aosta), Region / Italien
Goldkristalle auf Quarz
Views (Image: 1583912203): 571
Goldkristalle auf Quarz (SNr: Au-Gold-2-1-60)

Goldkristalle zusammen mit Orthobrannerit auf Quarz von Brusson, Val d´Aosta, Italien. Bildhöhe etwa 5,5 mm.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2020-03-11
Locality: Bergwerk Brusson (Minera di Brusson) / Brusson / Ayastal (Valle d'Ayas) / Aostatal (Valle d'Aosta), Region / Italien

Collectors Summary

Color schwarz
Streak color braunschwarz
Lustre Diamantglanz
Hardness (Mohs) 5
Solubility +++ warme H2SO4, H3PO4, - kalte H2SO4, HCl
Crystal System orthorhombisch, P2122

Chemism

Chem­ical formula

U4+U6+Ti4O12(OH)2

Chem­ical com­po­si­tion

Titan, Sauerstoff, Uran, Wasserstoff

Unit weight: 893.53414 u; Number of atoms in the formula: 22

Info

Empirical formula:

UUTi4O12(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.23

2

9.09

1.0079470

2.0158940
Oxygen

O

25.07

14

63.64

15.9994300

223.9920200
Titanium

Ti

21.43

4

18.18

47.8671000

191.4684000
Uranium

U

53.28

2

9.09

238.0289130

476.0578260

Anal­y­sis wt%

UO2 : 28.75, ThO2 : 1.03, UO3 : 31.08, CaO : 0.44, TiO2 : 35.35, Fe2O3 : 0.40, SiO2 : 0.65, H2O : 1.87 (Ref: Acta Geologica Sinica 78)

Strunz 9th edi­tion incl. updates

4.DH.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
H: Mit großen (± mittelgroßen) [Kationen]; Lagen kantenverknüpfter Oktaeder
05:Brannerit-Gruppe

Lapis Clas­sifica­tion

IV/D.22-030

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

Clas­sifica­tion by Hölzel

4.DJ.620

4: OXIDES
D: Dioxides
J: Titanates, Niobates and Tantalates, C large, V medium ò 2
6: Brannerite-Group

Dana 8th edi­tion

08.02.07.01

08: Multiple Oxides with Nb, Ta, and Ti
02: Multiple Oxides with Nb, Ta, and Ti where (A)2 (B2O6) (O,OH,F)

IMA sta­tus

anerkanntes Mineral

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

braunschwarz

Diaphane­ity (Trans­parency)

opak, durchscheinend

Lus­tre

Diamantglanz

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(546) 16.6, 17.8, 17.2
Reflection chart Orthobrannerite

Reflec­tiv­ity Ø

17.2

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

222

Space Group number

17

Space Group

P2122

Cell param­e­ters a (Å)

7.37he

Cell param­e­ters b (Å)

11.67at

Cell param­e­ters c (Å)

6.33

Cell param­e­ters a/b or c/a

0.632

Cell param­e­ters c/b

0.542

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

544.43

X-Ray Pow­der Diffrac­tion

4.87(70),
3.89(80),
3.17(100),
2.45(90),
2.29(50),
1.823(50),
1.659(90),
1.203(60)
XRD chart Orthobrannerite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

5

VHN (Hard­ness Vick­ers)

524 (175g)g

Density (g/cm³)

5.46 (gemessen)

5.45 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ warme H2SO4, H3PO4, - kalte H2SO4, HCl

(Co-)Type locality

(Co-)Type locality

China/Yunnan, Provinz

Preface

Author (Name, Year)

, 1978

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

American Mineralogist 64 (1979), 656

Other languages

German

Orthobrannerit

English

Orthobrannerite

French

Orthobrannerite

Spanish

Ortobrannerita

Japanese

ｵﾙｿﾌﾞﾗﾝﾈﾙ石

Alternative Name

Spanish

Orthobrannerita

CNMNC symbol

Symbol

Obnr

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

German pages

 DeWikiPedia - search for: Orthobrannerit
Google-Bilder-Suche - search for: Orthobrannerit
Mineralienatlas.de (Forum) - search for: Orthobrannerit

English pages

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

Mineral Dealer

German pages

 hausen - Mineralgroßhandel - search for: Orthobrannerit
Crystal-Treasure.com - search for: Orthobrannerit
Bosse - search for: Orthobrannerit
Edelsteine Neuburg - Gundolf Fischer - search for: Orthobrannerit