Rosiaite Mineral Data

General Rosiaite Information

Chemical Formula:

PbSb+++++2O6

Composition:

Molecular Weight = 546.70 gm

Antimony 44.54 % Sb 59.17 % Sb₂O₅

Lead 37.90 % Pb 40.83 % PbO

Oxygen 17.56 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbSb₂O₆

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

Cetine di Cotorniano Mine (Cetine Mine), Rosia, Siena Province, Tuscany, Italy Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Rosiaite

Synonym:

ICSD 202391

IMA1995-021

PDF 34-912

Rosiaite Image

Images:

Rosiaite Valentinite

Comments: Beige crystals of rosiaite with a colorless valentinite prism.
Location: Tafone Mine, Manciano, Grosseto, Tuscany, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Rosiaite Crystallography

Axial Ratios:

a:c = 1:1.01454

Cell Dimensions:

a = 5.295, c = 5.372, Z = 1; V = 130.44 Den(Calc)= 6.96

Crystal System:

Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 31m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.488(1), 2.648(0.35), 2.109(0.22),

Physical Properties of Rosiaite

Cleavage:

None

Color:

Colorless, Light yellow.

Density:

6.96

Diaphaneity:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

5.5 - Knife Blade

Luster:

Resinous

Streak:

white

Optical Properties of Rosiaite

Gladstone-Dale:

CI meas= 0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1445,KPDmeas= 0.1445,KC= 0.1448
Ncalc = 2.01

Optical Data:

Uniaxial (-), e=1.92, w=2.092, bire=0.1720.

Calculated Properties of Rosiaite

Electron Density:

Bulk Density (Electron Density)=5.91 gm/cc
note: Specific Gravity of Rosiaite =6.96 gm/cc.

Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Photoelectric:

PE_Rosiaite= 839.85 barns/electron
U=PE_Rosiaite x rElectron Density=4,961.17 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rosiaite is Not Radioactive

Rosiaite Classification

Dana Class:

08.03.11.02 (08)Multiple Oxides with Nb, Ta, and Ti

(08.03)where A (B2O6)

(08.03.11)Dana Group

08.03.11.01 Changbaiite PbNb2O6 R 3m 3m

08.03.11.02 Rosiaite! PbSb2O6 P 31m 3 2/m

Strunz Class:

04.DH.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.D - Metal:Oxygen = 1:2 and similar

04.DH -With large (� medium-sized) cations; sheets of edge-sharing octahedra

04.DH.25 Rosiaite! PbSb2O6 P 31m 3 2/m

Other Rosiaite Information

References:

PHYS. PROP.(Eur. J. Min.,Vol.8,p487-492,1996) OPTIC PROP.(Eur. J. Min.,Vol.8,p487-492,1996)

See Also:

Links to other databases for Rosiaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Print or Cut-and-Paste your Rosiaite Specimen Label here :

Rosiaite

PbSb+++++2O6
Dana No: 08.03.11.02 Strunz No: 04.DH.25
Locality:

Notes:

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