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Tazzoliite

Additional Functions

Collectors Summary

Cleavages vollkommen (010)
Crystal System orthorhombisch, Fmmm

Chemism

Chemical formula

Ba4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) (0≤x≤0.5)

Additional chem. information

verwandt mit Pyrochlor

Chemical composition

Barium, Natrium, Niob, Silicium, Titan, Phosphor, Sauerstoff, Wasserstoff

Strunz 9th edition incl. updates

4.D.

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

Lapis Classification

IV/C.15-030

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)
15: Pyrochlor-Gruppe; MIKROLITH-Untergruppe [Ta ± Nb]

Classification by Hölzel

4.CI.150

4: OXIDES
C: R2O3 Sesquioxides
I: Microlite-Group, Ta-dominant on the B-site

IMA status

anerkannt - CNMNC - New minerals and nomenclature modifications approved in Jun. 2011

Mineral status

anerkanntes Mineral

Optical Properties

2V angle

Biaxial (-) 50°

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

69

Space Group

Fmmm

Cell parameters a (Å)

7.412

Cell parameters b (Å)

20.063

Cell parameters c (Å)

21.440

Cell parameters a/b or c/a

0.369

Cell parameters c/b

1.069

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

8

Volume (ų)

3188.277

Crystal structure

Neuer Strukturtyp verwandt mit Pyrochlor

X-Ray Powder Diffraction

3.66(60), 3.16(30), 3.05(100), 2.979(25), 2.835(50), 1.854(25), 1.822(25)

XRD chart Tazzoliite

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

Physical Properties

VHN (Hardness Vickers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Cleavages

vollkommen (010)

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Italien/Venetien (Veneto), Region/Padua (Padova), Provinz/Euganeische Hügel (Colli Euganei)/Monte delle Basse

Type material

Museo di Mineralogia di Padova, Padova, Italien

Collection number of type material

9426

Preface

Author (Name, Year)

F. Cámara, F. Nestola, A. Guastoni, F. Zorzi, L. Bindi and D. Pedron (2011)

References

Cámara, F., Nestola, F., Guastoni, A., Zorzi, F., Bindi, L. and Pedron, D. (2011) Tazzoliite, IMA 2011-018. CNMNC Newsletter No. 10, October 2011, page 2552;

Other languages

German

Tazzoliit

English

Tazzoliite

CNMNC (IMA)-Number

IMA 2011-018

CNMNC symbol

Symbol

Tzo

IDs

GUSID (Global unique identifier short form) d8HLsfJRH06FkiPf_M3Itw
GUID (Global unique identifier) B1CBC177-51F2-4E1F-8592-23DFFCCDC8B7
Database ID 7068



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