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.

Diaphaneity:

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

Gladstone-Dale:

CI calc= 0.235 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1352,KC= 0.1767
Ncalc = 2.19

Optical Data:

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

Calculated Properties of Clinocervantite

Electron Density:

Bulk Density (Electron Density)=5.87 gm/cc
note: Specific Gravity of Clinocervantite =6.73 gm/cc.

Fermion Index:

Fermion Index = 0.0000998995
Boson Index = 0.9999001005

Photoelectric:

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

Radioactivity:

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

Clinocervantite Classification

Dana Class:

04.04.16.02 (04)Simple Oxides

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

(04.04.16)Dana Group

04.04.16.01 Cervantite SbSbO4 Pbn21 mm2

04.04.16.02 Clinocervantite! SbSbO4 C 2/c 2/m

Strunz Class:

04.DE.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

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

04.DE -With medium-sized cations; with various polyhedra

04.DE.30 Cervantite SbSbO4 Pbn21 mm2

04.DE.30 Bismutotantalite Bi(Ta,Nb)O4 Pcmn 2/m 2/m 2/m

04.DE.30 Bismutocolumbite Bi(Nb,Ta)O4 Pcnn 2/m 2/m 2/m

04.DE.30 Clinocervantite! SbSbO4 C 2/c 2/m

04.DE.30 Stibiocolumbite SbNbO4 Pc21n mm2

04.DE.30 Stibiotantalite SbTaO4 Pc21n mm2

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
11 - Ruff.Info

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

Clinocervantite

Sb+++Sb+++++O4
Dana No: 04.04.16.02 Strunz No: 04.DE.30
Locality:

Notes: