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Incaite Mineral Data

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General Incaite Information

Help on Chemical  Formula: Chemical Formula: Pb4Sn4FeSb2S15
Help on Composition: Composition: Molecular Weight = 2,083.98 gm
   Iron       2.68 %  Fe
   Tin       22.79 %  Sn
   Antimony  11.68 %  Sb
   Lead      39.77 %  Pb
   Sulfur    23.08 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb4Sn4Fe2+Sb2S15
Help on Environment: Environment: In hydrothermal Ag-Sn ores.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Poopo, Bolivia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Inca people, pre-European rulers of Chile, Bolivia, and Peru.
Help on Name Pronunciation: Name Pronunciation: Incaite Say INCAITE

Incaite Image

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Comments: Formless gray lump of incaite, sawn on 2 sides. Former Franz Bauer (Munich) collection.
Location: The label says "Mejillones, Chile" which is certainly wrong, but Mejillones is a railhead and port which served exports from Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina. Scale: Lump size 2 mm.
© Richard Dale / Dale Minerals

Incaite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.9861:1:1.0069
Help on Cell Dimensions: Cell Dimensions: a = 17.29, b = 5.79, c = 5.83, Z = 1; alpha = 90°, beta = 90°, gamma = 90° V = 583.64 Den(Calc)= 5.93
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.86(1), 2.03(0.8), 3.43(0.7),4.31(0.6), 2.06(0.4), 3.12(0.4), 3.23(0.4), 3.83(0.4),

Physical Properties of Incaite

Help on Cleavage: Cleavage: {100} Perfect
Help on Color: Color: Lead gray.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Metallic

Optical Properties of Incaite

Help on RL Anisotrophism: RL Anisotrophism: Distinct in greenish brown and brownish gray.
Help on RL Color: RL Color: Grayish white.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Incaite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 480 nm   29.80   33.70 
 540 nm   29.00   33.20 
 600 nm   28.60   32.90 
 640 nm   28.10   32.50 
Calculated Relative Intensity Colors of Incaite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 310%

Calculated Properties of Incaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.10 gm/cc
note: Specific Gravity of Incaite =5.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.12
Boson Index = 0.88
Help on Photoelectric: Photoelectric: PEIncaite = 825.20 barns/electron
U=PEIncaite x rElectron Density=4,207.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Incaite is Not Radioactive

Incaite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.01)where z/y > 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.01.04)Cylindrite Group Cylindrite Pb3Sn4FeSb2S14 P1 1 Franckeite (Pb,Sn)6FeSn2Sb2S14 P1 1 Incaite Pb4Sn4FeSb2S15 P1 ? 1 Potosiite Pb6Sn2FeSb2S14 P 1 ? 1 Abramovite! Pb2SnInBiS7 P1 1 Coiraite! (Pb,Sn)12.5As3Sn5FeS28 Unk Mono
Help on  Strunz Class: Strunz Class: 02.HF.25b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HF -With SnS and PbS archetype structure units
02.HF.25b Franckeite (Pb,Sn)6FeSn2Sb2S14 P1 1
02.HF.25b Incaite Pb4Sn4FeSb2S15 P1 ? 1
02.HF.25b Potosiite Pb6Sn2FeSb2S14 P 1 ? 1
02.HF.25b Coiraite! (Pb,Sn)12.5As3Sn5FeS28 Unk Mono

Other Incaite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Incaite :
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

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Dana No: Strunz No: 02.HF.25b





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