Apuanite Mineral Data

General Apuanite Information

Chemical Formula:

Fe++Fe+++4Sb+++4O12S

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 % S^2-

- % S -1.62 % -O=S

Oxygen 19.39 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺Fe³⁺₄Sb₄O₁₂S

Environment:

In an iron deposit in barite formed by low-grade metasomatic processes at the contact between phyllites and dolostones.

IMA Status:

Approved IMA 1978

Locality:

Buca della Vena mine, northeast of Stazzema, Apuan Alps, Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Apuanite

Synonym:

ICSD 100541

PDF 33-642

Apuanite Image

Images:

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

Axial Ratios:

a:c = 1:2.1464

Cell Dimensions:

a = 8.367, c = 17.959, Z = 4; V = 1,257.25 Den(Calc)= 5.23

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4₁/mbc

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

By Intensity(I/I_o): 3.168(1), 1.922(0.47), 2.957(0.43),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Mellini M , Merlino S , American Mineralogist , 64 (1979) p.1235-1242, Versliaite and apuanite: Derivative structures related to schafarzikite

Physical Properties of Apuanite

Cleavage:

{110} Perfect

Color:

Black.

Density:

5.33

Diaphaneity:

Opaque

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Metallic

Streak:

black

Optical Properties of Apuanite

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

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

Electron Density:

Bulk Density (Electron Density)=4.71 gm/cc
note: Specific Gravity of Apuanite =5.23 gm/cc.

Fermion Index:

Fermion Index = 0.0063137157
Boson Index = 0.9936862843

Photoelectric:

PE_Apuanite= 169.84 barns/electron
U=PE_Apuanite x rElectron Density= 800.10 barns/cc.

Radioactivity:

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

Apuanite Classification

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

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

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

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

Search for Apuanite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Apuanite :

A Bijoux Google Search for Apuanite
Adam's Minerals Google Search for Apuanite
Cape Minerals Google Search for Apuanite
Dakota Matrix Minerals Google Search for Apuanite
Excalibur Mineral Corp. Google Search for Apuanite
Exceptional Minerals Google Search for Apuanite
John Betts Fine Minerals Search for Apuanite
McDougall Minerals Google Search for Apuanite
Mineral News Website Link
Rock and Mineral Shows Google Search for Apuanite
Weinrich Minerals, Inc. Google Search for Apuanite

Ask about Apuanite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Apuanite

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

Notes: