Cervantite Mineral Data

Cervantite Mineral Data

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General Cervantite 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:

Alteration product of stibnite.

IMA Status:

Valid Species (Pre-IMA) 1850

Locality:

Cervantes, Spain. Link to MinDat.org Location Data.

Name Origin:

Named after its locality.

Synonym:

ICSD 63271

PDF Nov-45

Cervantite Image

Images:

Cervantite

Comments: Brownish-yellow, rounded crystalline aggregate of cervantite on quartz.
Location: Clara Mine, Oberwolfach, Wolfach Valley, Black Forest, Baden-W?rttemberg, Germany. Scale: Picture size 1.6 mm.
© Thomas Witzke / Abraxas-Verlag

Cervantite Crystallography

Axial Ratios:

a:b:c =1.1301:1:2.4449

Cell Dimensions:

a = 5.436, b = 4.81, c = 11.76, Z = 4; V = 307.49 Den(Calc)= 6.64

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Pbn21

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

By Intensity(I/I_o): 3.06(1), 1.854(0.7), 2.91(0.7),

Physical Properties of Cervantite

Cleavage:

[001] Perfect

Color:

Yellow, Yellowish orange, White, Cream.

Density:

6.4 - 6.6, Average = 6.5

Diaphaniety:

Transparent to translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).

Habit:

Reniform - "Kidney like" in shape (e.g.. hematite).

Hardness:

4-5 - Fluorite-Apatite

Luster:

Vitreous - Pearly

Streak:

light yellow

Optical Properties of Cervantite

Optical Data:

Biaxial (?), a=2, g=2.1, bire=0.1000

Calculated Properties of Cervantite

Electron Density:

r_electron=5.79 gm/cc
note: r_Cervantite=6.64 gm/cc.

Fermion Index

Fermion Index = 0.00009
Boson Index = 0.99991

Photoelectric:

PE_Cervantite= 267.22 barns/electron
U=PE_Cervantite x r_electron=1,546.40 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Cervantite is Not Radioactive

Cervantite Classification

Dana Class:

4.4.16.1 (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.25-10 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 Cervantite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Cervantite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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

Cervantite

Sb+++Sb+++++O4
Dana No: 4.4.16.1 Strunz No: IV/D.25-10
Locality:

Notes: