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Rossovskyite

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Rossovskyit
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Rossovskyit

grauer, metallischer Rossovskyit, Bulgut, Altai Mountains, Chowd Aimag, Mongolei; BB 3 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-03-03
Locality: Bulgut Pegmatit / Altai-Hochgebirge / Chowd, Aimag / Mongolei

Collectors Summary

Color schwarz
Streak color schwarz
Lustre Semi-Metallglanz, matt
Hardness (Mohs) 6
Cleavages keine Spaltbarkeit oder Teilbarkeit beobachtet
Fracture uneben
Crystal System monoklin, P2/c
Morphology Rossovskyit formt abgeflachte anhedrale Körner bis zu 6 x 6 x 2 cm (lt Beschreibung cm ??).

Additional information / Summary

Topologisch, ist die Struktur von Rossovskyit analog der Wolframit-Mineralien-Gruppe

Chemism

Chem­ical formula

(Fe3+,Ta)(Nb,Ti)O4

Empir­ical formula (anal­y­sis)

Mn2+0.06Fe2+0.21 Fe3+0.47Ti0.25Nb0.51Ta0.43W0.06O4

Chem­ical com­po­si­tion

Eisen, Niob, Tantal, Titan, Sauerstoff

Unit weight: 253.455830114 u; Number of atoms in the formula: 5.99

Info

Empirical formula:

Mn0.06Fe0.21Fe0.47Ti0.25Nb0.51Ta0.43W0.06O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

25.25

4

66.78

15.9994300

63.9977200
Titanium

Ti

4.72

0.25

4.17

47.8671000

11.9667750
Manganese

Mn

1.30

0.06

1.00

54.9380499

3.2962830
Iron

Fe

14.98

0.68

11.35

55.8452000

37.9747360
Niobium

Nb

18.69

0.51

8.51

92.9063820

47.3822548
Tantalum

Ta

30.70

0.43

7.18

180.9479100

77.8076013
Tungsten

W

4.35

0.06

1.00

183.8410000

11.0304600

Anal­y­sis wt%

MnO : 1.68, FeO : 5.92, Fe2O3 : 14.66, TiO2 : 7.69, Nb2O5 : 26.59, Ta2O5 : 37.51, WO3 : 5.61, Total : 99.66 wt%

Strunz 9th edi­tion incl. updates

4.DB.25

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
B: Mit mittelgroßen [Kationen]: Ketten kantenverknüpfter Oktaeder
25:Samarskit-Gruppe

Lapis Clas­sifica­tion

IV/D.16-045

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

IMA sta­tus

anerkannt - (CNMNC) Newsletter 22 - Mineralogical Magazine, 2014, Vol. 78(5), pp. 1241-1248

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

 Wolframite group

Optical Properties

Color

schwarz

Streak color

schwarz

Lus­tre

Semi-Metallglanz, matt

2V angle

Biaxial

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

13

Space Group

P2/c

Cell param­e­ters a (Å)

4.668(1)

Cell param­e­ters b (Å)

5.659(1)

Cell param­e­ters c (Å)

5.061(1)

Cell param­e­ters a/b or c/a

0.825

Cell param­e­ters c/b

0.894

Cell param­e­ters α

90°

Cell param­e­ters β

90.21(1)º

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

133.692

Kristall struc­ture

Verwandt mit Ixiolit und Wodginit; Struktur bestimmt

X-Ray Pow­der Diffrac­tion

3.604(49), 2.938(100), 2.534(23), 2.476(29), 2.336(27), 1.718(26), 1.698(31), 1.440(21)
XRD chart Rossovskyite

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

Morphol­ogy

Rossovskyit formt abgeflachte anhedrale Körner bis zu 6 x 6 x 2 cm (lt Beschreibung cm ??).

Physical Properties

Hard­ness (Mohs)

6

Density (g/cm³)

6.302 (berechnet) 6.06 (berechnet)

6.296 ( ρ calc. Mineralienatlas )

Cleav­ages

keine Spaltbarkeit oder Teilbarkeit beobachtet

Frac­ture

uneben

Tenac­ity

spröde

(Co-)Type locality

(Co-)Type locality

Mongolei/Chowd, Aimag/Altai-Hochgebirge/Bulgut Pegmatit

Type mate­r­ial

Mineralogical Museum of the Tomsk State University, Tomsk, 634050 Russland

Col­lec­tion number of type mate­r­ial

20927

Par­a­ge­n­e­sis of type mate­r­ial

Mikroklin, Muskovit, Quarz, Albit, Granat der Almandin–Spessartin Serie, Beryl, Apatit, Triplit, Zirkon, Pyrit, Yttrobetafit-(Y) und Schörl

Preface

Name from

L. N. Rossovsky

Author (Name, Year)

Sergey I. Konovalenko, Sergey A. Ananyev, Nikita V. Chukanov, Ramiza K. Rastsvetaeva, Sergey M. Aksenov, Anna A. Baeva, Ramil Gainov, Oleg N. Lopatin and Tatiana S. Nebera (2014)

References

Konovalenko, S.I., Ananyev, S.A., Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Baeva, A.A., Gainov, R., Lopatin, O.N. and Nebera, T.S. (2014) Rossovskyite, IMA 2014-056. CNMNC Newsletter No. 22, October 2014, page 1246; Mineralogical Magazine, 78, 1241-1248.

Konovalenko, S.I., Ananyev, S.A., Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Baeva, A.A., Gainov, R.R., Vagizov, F.G., Lopatin, O.N., Nebera, T.S. - A new mineral species rossovskyite, (Fe3+,Ta)(Nb,Ti)O4 - crystal chemistry and physical properties. Physics and Chemistry of Minerals, 42 (2015), (in press).

IMA group assignments

 
Wolframite group
 
 
 

 
 
Ferberite
Fe2+WO4
monoklin
P2/c

 
 
Heftetjernite
ScTaO4
monoklin
P2/c

 
 
Huanzalaite
MgWO4
monoklin
P2/c

 
 
Hübnerite
MnWO4
monoklin
P2/c

 
 
Nioboheftetjernite
ScNbO4
monoklin
P2/c

 
 
Rossovskyite
(Fe3+,Ta)(Nb,Ti)O4
monoklin
P2/c

 
 
Sanmartinite
ZnWO4
monoklin
P2/c

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Actuality: 15. May 2022 - 09:14:42

Other languages

German

Rossovskyit

English

Rossovskyite

Russian

Россовскиит

CNMNC (IMA)-Number

IMA 2014-056

CNMNC symbol

Symbol

Rvy

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