| |
 |
Mozgovaite Mineral Data
|
|
|
General Mozgovaite Information
|
 Chemical Formula: |
PbBi4(S,Se)7 |
| Composition: |
Molecular Weight = 1,279.31 gm |
| |
Bismuth 65.34 % Bi |
| |
Lead 16.20 % Pb |
| |
Selenium 1.54 % Se |
| |
Sulfur 16.92 % S |
| |
______ |
| |
100.00 % |
| Empirical Formula: |
PbBi4S6.75Se0.25 |
| Environment: |
High-temperature (>600 deg C) fumarolic product. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
La Fossa crater, Isle Vulcano, Aeolian Islands, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the Russian mineralogist Nadezhda N. Mozgova (1931-). |
| Synonym: |
IMA1998-060 |
| |
Mozgovaite Image |
|
Images:
|
|
Mozgovaite
Comments: B&W image of a polished section.The black matrix is epoxy. The black spots on the crystal are the trace of microhardness indenter.
Location: Fumarole in La Fossa crater on Vulcano, Aeolian Islands, Italy. (CanMin v37:1499).
Scale: Crystal Length 165 µm.
© Canadian Mineralogist |
|
Mozgovaite Crystallography
|
| Axial Ratios: |
a:b:c =0.3524:1:0.1082 |
| Cell Dimensions: |
a = 13.18, b = 37.4, c = 4.05, Z = 6; V = 1,996.37 Den(Calc)= 6.38 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Bbmm |
| X Ray Diffraction: |
By Intensity(I/Io): 3.8(1)(280,121), 2.34(0.4)(0.16.0), 2.95(0.4)(321),3.58(0.3)(141), 3.3(0.3)(400), 3.4(0.2)(151), 3.11(0.2)(430), 1.917(0.2), 2.81(0.2)(191,470), |
| |
Physical Properties of Mozgovaite
|
| Color: |
Silver gray. |
| Diaphaneity: |
Opaque |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Hardness: |
2.5-3.5 - Finger Nail-Copper Penny |
| Luster: |
Metallic |
| Streak: |
gray |
| |
Optical Properties of Mozgovaite
|
| RL Anisotrophism: |
Strong, without color effects. |
| RL Bireflectance: |
Weak. |
| RL Color: |
White. |
| RL Pleochroism: |
None. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Mozgovaite in Air
| λ |
R1 |
R2 |
 |
∑ R1(λ) |
∑ R2(λ) |
| 440 nm |
40.10 |
36.00 |
|
|
|
| 460 nm |
40.20 |
35.80 |
|
| 540 nm |
40.60 |
35.30 |
|
| 560 nm |
40.60 |
35.10 |
|
| 580 nm |
40.60 |
35.00 |
|
| 600 nm |
40.30 |
35.00 |
|
| 640 nm |
40.10 |
34.80 |
|
| 660 nm |
40.10 |
34.90 |
|
Calculated Relative Intensity Colors of Mozgovaite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
260% |
| R1 |
|
|
|
|
|
|
|
|
|
|
|
| R2 |
|
|
|
|
|
|
|
|
|
|
|
|
| |
Calculated Properties of Mozgovaite
|
| Electron Density: |
Bulk Density (Electron Density)=5.29 gm/cc
note: Specific Gravity of Mozgovaite =6.38 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.03
Boson Index = 0.97 |
| Photoelectric: |
PEMozgovaite =1,570.05 barns/electron
U=PEMozgovaite x rElectron Density=8,307.59 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mozgovaite is Not Radioactive |
| |
Mozgovaite Classification
|
| Dana Class: |
03.03.03.02 (03)Sulfides - Sulfosalts |
| |
(03.03)where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
| |
(03.03.03)Dana Group |
| |
03.03.03.01 Heyrovskyite Pb10AgBi5S18 C mcm 2/m 2/m 2/m |
| |
03.03.03.02 Mozgovaite! PbBi4(S,Se)7 Bbmm 2/m 2/m 2/m |
| Strunz Class: |
02.JA.05h 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
| |
02.J - Sulfosalts of PbS Archetype |
| |
02.JA -Galena derivatives with little or no Pb |
| |
02.JA.05h Mozgovaite! PbBi4(S,Se)7 Bbmm 2/m 2/m 2/m |
| |
Other Mozgovaite Information
|
| References: |
NAME( AmMin, Vol 85, p 1562) PHYS. PROP.(AmMin, Vol 85, p 1562) OPTIC PROP.(AmMin, Vol 85, p 1562) |
| See Also: |
Links to other databases for Mozgovaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
Search for Mozgovaite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Mozgovaite :
Ask about Mozgovaite 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 Mozgovaite Specimen Label here :
|
Mozgovaite
PbBi4(S,Se)7
Dana No: 03.03.03.02 Strunz No: 02.JA.05h
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.