Cervantite Mineral Data

Cervantite Mineral Data
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General Cervantite Information

Help on Chemical Formula: Chemical Formula: Sb+++Sb+++++O4
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: SbSbO4
Help on Environment: Environment: Alteration product of stibnite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1850
Help on Locality: Locality: Cervantes, Spain. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Synonym: Synonym: ICSD 63271
  PDF Nov-45
 

Cervantite Image

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Cervantite

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

Cervantite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.1301:1:2.4449
Help on Cell Dimensions: Cell Dimensions: a = 5.436, b = 4.81, c = 11.76, Z = 4; V = 307.49 Den(Calc)= 6.64
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: Pbn21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.06(1), 1.854(0.7), 2.91(0.7),
Click Here for Large Cervantite Structure Window Crystal Structure:

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Thornton G , Acta Crystallographica, Section B , 33 (1977) p.1271-1273, A neutron diffraction study of a-Sb2O4, Locality: synthetic

 

Physical Properties of Cervantite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellow, Yellowish orange, White, Cream.
Help on Density: Density: 6.4 - 6.6, Average = 6.5
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: light yellow
 

Optical Properties of Cervantite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.105 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1581,KPDmeas= 0.1615,KC= 0.1767
Ncalc = 2.13 - 2.17
Help on Optical Data: Optical Data: Biaxial (?), a=2, g=2.1, bire=0.1000
 

Calculated Properties of Cervantite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.67 gm/cc
note: Specific Gravity of Cervantite =6.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0000998995
Boson Index = 0.9999001005
Help on Photoelectric: Photoelectric: PECervantite = 267.22 barns/electron
U=PECervantite x rElectron Density=1,513.80 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cervantite is Not Radioactive
 

Cervantite Classification
Help on Dana Class: Dana Class: 04.04.16.01 (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
Help on Strunz Class: 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 Cervantite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: 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 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Cervantite

Sb+++Sb+++++O4
Dana No: 04.04.16.01 Strunz No: 04.DE.30
Locality:

 

Notes: