Clinocervantite Mineral Data

Clinocervantite Mineral Data

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General Clinocervantite Information

Chemical Formula:

Sb+++Sb+++++O4

Composition:

Molecular Weight = 307.50 gm

Antimony 79.19 % Sb 47.40 % Sb₂O₃ / 52.60 % Sb₂O₅

Oxygen 20.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

SbSbO₄

Environment:

Found in cavities in waste rock at the mine.

IMA Status:

Approved IMA 1998 (Dana # Added)

Locality:

Cetine di Cotorniano mine, Siena, central Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

The name reflects its symmetry and relationship to cervantite.

Synonym:

ICSD 88619

IMA1997-017

PDF 51-1558

Clinocervantite Image

Images:

Clinocervantite

Comments: White crystals of Clinocervantite.
Location: Cetine di Cotorniano mine (Cetine mine), Rosia, Siena, Tuscany, Italy. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Clinocervantite Crystallography

Axial Ratios:

a:b:c =2.4958:1:1.1142

Cell Dimensions:

a = 12.06, b = 4.832, c = 5.384, Z = 4; beta = 104.6° V = 303.62 Den(Calc)= 6.73

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 3.244(1), 2.877(0.8), 2.92(0.5),

Crystal Structure:

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Basso R , Lucchetti G , Zefiro L , Palenzona A , European Journal of Mineralogy , 11 (1999) p.95-100, Clinocervantite, B-Sb2O4, the natural monoclinic polymorph, of cervantite from the Cetine mine, Siena, Italy, Note: z-coordinate to O2 altered by communications with R Basso, April, 2003, Locality: Cetine mine, Siena, Italy

Physical Properties of Clinocervantite

Cleavage:

None

Color:

Colorless.

Diaphaniety:

Transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Clinocervantite

Optical Data:

Biaxial (?), a=1.72, g=2.1, bire=0.3800

Calculated Properties of Clinocervantite

Electron Density:

r_electron=5.87 gm/cc
note: r_{Clinocervantite}=6.73 gm/cc.

Fermion Index

Fermion Index = 0.00009
Boson Index = 0.99991

Photoelectric:

PE_{Clinocervantite}= 267.22 barns/electron
U=PE_{Clinocervantite} x r_electron=1,567.36 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Clinocervantite is Not Radioactive

Clinocervantite Classification

Dana Class:

4.4.16.2 (4)Simple Oxides

(4.4)with a cation charge of 4+ (A++++ O2)

(4.4.16)Dana Group

4.4.16.1 Cervantite SbSbO4 Pbn21 mm2

4.4.16.2 Clinocervantite ! SbSbO4 C 2/c 2/m

Strunz Class:

IV/D.25-05 IV - Oxides

IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)

IV/D.25 - Cervantite - Chiluite series

IV/D.25-05 Clinocervantite SbSbO4 C 2/c 2/m

IV/D.25-10 Cervantite SbSbO4 Pbn21 mm2

IV/D.25-20 Stibiocolumbite SbNbO4 Pc21n mm2

IV/D.25-30 Stibiotantalite SbTaO4 Pc21n mm2

IV/D.25-35 Bismutocolumbite Bi(Nb,Ta)O4 Pcnn 2/m 2/m 2/m

IV/D.25-40 Bismutotantalite Bi(Ta,Nb)O4 Pcmn 2/m 2/m 2/m

IV/D.25-70 Chiluite Bi6Te2Mo2O21 P 6₃22, P 6₃/m, P 6₃ Hex

Other Clinocervantite Information

References:

NAME( CanMin 8/99) PHYS. PROP.(AmMin, V84, p1464) OPTIC PROP.(Eur. J. Min.,Vol.10,1998)

See Also:

Links to other databases for Clinocervantite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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

Clinocervantite

Sb+++Sb+++++O4
Dana No: 4.4.16.2 Strunz No: IV/D.25-05
Locality:

Notes: