| |
 |
Versiliaite Mineral Data
|
|
|
General Versiliaite Information
|
 Chemical Formula: |
Fe++4Fe+++8Sb+++12O23S2 |
| Composition: |
Molecular Weight = 2,563.28 gm |
| |
Iron 26.14 % Fe 11.21 % FeO / 24.92 % Fe2O3 |
| |
Antimony 57.00 % Sb 68.23 % Sb2O3 |
| |
Sulfur 2.50 % S 2.50 % S2- |
| |
- % S -1.25 % -O=S |
| |
Oxygen 14.36 % O |
| |
______ ______ |
| |
100.00 % 105.62 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+4Fe3+8Sb12O23S2 |
| Environment: |
In an iron deposit in barite formed by metasomatic processes at the contact between phyllites and dolostones. |
| IMA Status: |
Approved IMA 1979 |
| Locality: |
Buca della Vena mine, Versilia valley, Apuan Alps, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Versiliaite + Pronunciation  |
| Synonym: |
ICSD 100540 |
| |
PDF 33-698 |
| |
Versiliaite Image |
|
Images:
|
|
Versiliaite Crystallography
|
| Axial Ratios: |
a:b:c =1.0207:1:1.4334 |
| Cell Dimensions: |
a = 8.499, b = 8.326, c = 11.935, Z = 1; V = 844.55 Den(Calc)= 5.04 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbam ? |
| X Ray Diffraction: |
By Intensity(I/Io): 3.196(1), 3.16(0.97), 2.972(0.81), |
| |
Physical Properties of Versiliaite
|
| Cleavage: |
{110} Perfect |
| Color: |
Black. |
| Density: |
5.12 |
| Diaphaneity: |
Opaque |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Hardness: |
5 - Apatite |
| Luster: |
Metallic |
| Streak: |
black |
| |
Optical Properties of Versiliaite
|
| Optical Data: |
Uniaxial (?). |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Versiliaite in Air
| λ |
R1 |
R2 |
 |
∑ R1(λ) |
∑ R2(λ) |
| 470 nm |
18.50 |
19.40 |
|
|
|
| 546 nm |
18.50 |
17.80 |
|
| 589 nm |
18.30 |
16.90 |
|
| 650 nm |
17.70 |
16.20 |
|
Calculated Relative Intensity Colors of Versiliaite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
520% |
| R1 |
|
|
|
|
|
|
|
|
|
|
|
| R2 |
|
|
|
|
|
|
|
|
|
|
|
|
| |
Calculated Properties of Versiliaite
|
| Electron Density: |
Bulk Density (Electron Density)=4.48 gm/cc
note: Specific Gravity of Versiliaite =5.04 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.0057992445
Boson Index = 0.9942007555 |
| Photoelectric: |
PEVersiliaite = 197.10 barns/electron
U=PEVersiliaite x rElectron Density= 883.60 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Versiliaite is Not Radioactive |
| |
Versiliaite Classification
|
| Dana Class: |
45.01.10.01 (45)Acid and normal Antimonites, Arsenites and Phosphites |
| |
(45.01)with miscellaneous formulae |
| |
(45.01.10)Dana Group |
| |
45.01.10.01 Versiliaite Fe4Fe8Sb12O23S2 Pbam ? 2/m 2/m 2/m |
| Strunz Class: |
04.JA.30 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.30 Versiliaite Fe4Fe8Sb12O23S2 Pbam ? 2/m 2/m 2/m |
| |
Other Versiliaite Information
|
| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Versiliaite :
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 Versiliaite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Versiliaite :
Ask about Versiliaite 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
Espaņol
Print or Cut-and-Paste your Versiliaite Specimen Label here :
|
Versiliaite
Fe++4Fe+++8Sb+++12O23S2
Dana No: 45.01.10.01 Strunz No: 04.JA.30
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.
