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Apuanite Mineral Data

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General Apuanite Information

Help on Chemical  Formula: Chemical Formula: Fe++Fe+++4Sb+++4O12S
Help on Composition: Composition: Molecular Weight = 990.29 gm
   Iron      28.20 %  Fe    7.26 % FeO / 32.25 % Fe2O3
   Antimony  49.18 %  Sb   58.87 % Sb2O3
   Sulfur     3.24 %  S     3.24 % S2-
               -   %  S    -1.62 % -O=S 
   Oxygen    19.39 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+Fe3+4Sb4O12S
Help on Environment: Environment: In an iron deposit in barite formed by low-grade metasomatic processes at the contact between phyllites and dolostones.
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Buca della Vena mine, northeast of Stazzema, Apuan Alps, Tuscany, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Apuanite Say APUANITE
Help on Synonym: Synonym: ICSD 100541
  PDF 33-642
 

Apuanite Image

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  Apuanite

Comments: Black tabular crystal of apuanite on matrix.
Location: Buca della Vena Mine, Stazzema, Versilia Valley, Apuan Alps, Tuscany, Italy. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Apuanite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.1464
Help on Cell Dimensions: Cell Dimensions: a = 8.367, c = 17.959, Z = 4; V = 1,257.25 Den(Calc)= 5.23
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 41/mbc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.168(1), 1.922(0.47), 2.957(0.43),
 

Physical Properties of Apuanite

Help on Cleavage: Cleavage: {110} Perfect
Help on Color: Color: Black.
Help on Density: Density: 5.33
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black
 

Optical Properties of Apuanite

Help on Optical Data: Optical Data: Uniaxial (?).
  NCalc= 2.23 - from Gladstone-Dale relationship (KC = 0.2347) where Ncalc=Dcalc*KC+1
NCalc= 2.25 - from Gladstone-Dale relationship (KC = 0.2347) where Ncalc=Dmeas*KC+1
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Apuanite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   19.10   20.80 
   
 546 nm   21.90   19.60 
 589 nm   21.60   18.40 
 650 nm   19.60   16.90 
Calculated Relative Intensity Colors of Apuanite in Air
Relative
Intensity
   0%   50% 100% 150% 200% 250% 300% 350% 400% 450% 490%
R1                      
R2                      
 

Calculated Properties of Apuanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.71 gm/cc
note: Specific Gravity of Apuanite =5.23 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0063137157
Boson Index = 0.9936862843
Help on Photoelectric: Photoelectric: PEApuanite = 169.84 barns/electron
U=PEApuanite x rElectron Density= 800.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Apuanite is Not Radioactive
 

Apuanite Classification

Help on  Dana Class: Dana Class: 45.01.09.01 (45)Acid and normal Antimonites, Arsenites and Phosphites
  (45.01)with miscellaneous formulae
  (45.01.09)Dana Group
 
45.01.09.01 Apuanite FeFe4Sb4O12S P 41/mbc 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.JA.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JA -Arsenites, antimonites, bismuthites; without additional anions, without H2O
 
04.JA.25 Apuanite FeFe4Sb4O12S P 41/mbc 4/m 2/m 2/m
 

Other Apuanite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Apuanite :
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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Apuanite

Fe++Fe+++4Sb+++4O12S
Dana No: 45.01.09.01 Strunz No: 04.JA.25
Locality:

 

Notes:

 

 
   
 


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