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Scainiite Mineral Data
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General Scainiite Information
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 Chemical Formula: |
Pb14Sb30S54O5 |
| Composition: |
Molecular Weight = 8,571.79 gm |
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Antimony 41.90 % Sb |
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Lead 36.98 % Pb |
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Sulfur 20.46 % S |
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Oxygen 0.65 % O |
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______ |
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100.00 % |
| Empirical Formula: |
Pb15.3Sb29.5S54.7O3.5 |
| Environment: |
In calcite veins which cut an iron and barium ore body. |
| IMA Status: |
Approved IMA 1996 (Dana # Added) |
| Locality: |
The Buca della Vena mine, southern Apuan Alps, near Pietrasanta, norhtern Tuscany, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Dr. Giuseppe Scaini (1906-1988), engineer and skillful investigator of systematic and Italian mineralogy. |
| Synonym: |
ICSD 90042 |
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IMA1996-014 |
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Scainiite Image |
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Images:
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Scainiite Crystallography
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| Axial Ratios: |
a:b:c =6.3814:1:2.9836 |
| Cell Dimensions: |
a = 51.996, b = 8.148, c = 24.311, Z = 4; beta = 104.09° V = 9,989.81 Den(Calc)= 5.70 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 3.472(1)(14.04), 2.956(0.54)(12.21,12.222.052(0.46)(8.0.10,14.08,
3.041(0.35)(408), 2.28(0.22)(829), 2.827(0.2)(626,026,1
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Physical Properties of Scainiite
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| Color: |
Bluish black. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Irregular - Very brittle fracture producing irregular fragments |
| Habit: |
Acicular - Occurs as needle-like crystals. |
| Luster: |
Metallic |
| Streak: |
probably black |
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Optical Properties of Scainiite
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| Optical Data: |
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Calculated Properties of Scainiite
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| Electron Density: |
Bulk Density (Electron Density)=4.87 gm/cc
note: Specific Gravity of Scainiite =5.70 gm/cc.
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| Fermion Index: |
Fermion Index = 0.08
Boson Index = 0.92 |
| Photoelectric: |
PEScainiite = 809.84 barns/electron
U=PEScainiite x rElectron Density=3,944.44 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Scainiite is Not Radioactive |
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Scainiite Classification
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| Dana Class: |
03.08.16.01 (03)Sulfides - Sulfosalts |
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(03.08)where 1 < z/y <2 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.08.16)Dana Group |
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03.08.16.01 Scainiite! Pb14Sb30S54O5 C 2/m 2/m |
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03.08.16.02 Marrucciite! Hg3Pb16Sb18S46 C 2/m 2/m |
| Strunz Class: |
02.JB.35b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.J - Sulfosalts of PbS Archetype |
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02.JB -Galena derivatives, with Pb |
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02.JB.35b Scainiite! Pb14Sb30S54O5 C 2/m 2/m |
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Other Scainiite Information
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| References: |
NAME( MinRec, v 32, p 220) PHYS. PROP.(MinRec, v 32, p 220) |
| See Also: |
Links to other databases for Scainiite :
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
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Print or Cut-and-Paste your Scainiite Specimen Label here :
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Scainiite
Pb14Sb30S54O5
Dana No: 03.08.16.01 Strunz No: 02.JB.35b
Locality:
Notes:
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