Mineralogy Database

Aguilarite Mineral Data

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General Aguilarite Information

Help on Chemical  Formula: Chemical Formula: Ag4SeS
Help on Composition: Composition: Molecular Weight = 542.50 gm
   Silver    79.53 %  Ag
   Selenium  14.55 %  Se
   Sulfur     5.91 %  S
            ______ 
            100.00 % 
Help on Empirical Formula: Empirical Formula: Ag4SeS
Help on Environment: Environment: Low temperature silver mineral in deposits rich in selenium.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1891
Help on Locality: Locality: Mexico, Guanajuato, San Carlos mine. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ponciano Aguilar (1853-1935), superintendent of the San Carlos mine, Guanajuato, where the mineral was found.
Help on Name Pronunciation: Name Pronunciation: Aguilarite + Pronunciation Say AGUILARITE
 

Aguilarite Image

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  Aguilarite

Comments: Black, bladed, metallic aguilarite crystals in matrix.
Location: 4th of July mine, Custer Co., Idaho, USA. Scale: Crystal length 3 mm.
© Tom Loomis / Dakota Matrix

Aguilarite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6107:1:1.0944
Help on Cell Dimensions: Cell Dimensions: a = 4.33, b = 7.09, c = 7.76, Z = 2; V = 238.23 Den(Calc)= 7.56
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.43(1), 2.88(0.5), 1.48(0.4),
 

Physical Properties of Aguilarite

Help on Cleavage: Cleavage: None
Help on Color: Color: Gray, Iron gray, Black.
Help on Density: Density: 7.4 - 7.56, Average = 7.48
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Hackly - Jagged, torn surfaces, (e.g. fractured metals).
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Adamantine - Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: grayish black
 

Optical Properties of Aguilarite

Help on RL Anisotrophism: RL Anisotrophism: Very weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Aguilarite in Air
λ R  ∑ R(λ) 
 400 nm   33.30   
 420 nm   33.40 
 440 nm   33.50 
 460 nm   33.70 
 480 nm   33.80 
 500 nm   33.40 
 520 nm   32.80 
 540 nm   31.90 
 560 nm   31.00 
 580 nm   30.30 
 600 nm   29.80 
 620 nm   29.50 
 640 nm   29.30 
 660 nm   29.20 
 680 nm   29.20 
 700 nm   29.10 
Calculated Relative Intensity Colors of Aguilarite in Air
Relative
Intensity
   0%   30%   60%   90% 100% 120% 150% 180% 210% 240% 270% 290%
R                        
 

Calculated Properties of Aguilarite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.63 gm/cc
note: Specific Gravity of Aguilarite =7.56 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEAguilarite = 218.58 barns/electron
U=PEAguilarite x rElectron Density=1,449.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Aguilarite is Not Radioactive
 

Aguilarite Classification

Help on  Dana Class: Dana Class: 02.04.01.03 (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.01)Acanthite Group
 
02.04.01.01 Acanthite Ag2S P 21/n 2/m
 
02.04.01.02 Naumannite Ag2Se P 212121 2 2 2
 
02.04.01.03 Aguilarite Ag4SeS P 212121 2 2 2
Help on  Strunz Class: Strunz Class: 02.BA.30b 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BA -With Cu, Ag, Au
 
02.BA.30b Aguilarite Ag4SeS P 212121 2 2 2
 
02.BA.30b Naumannite Ag2Se P 212121 2 2 2
 

Other Aguilarite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Aguilarite :
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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Print or Cut-and-Paste your Aguilarite Specimen Label here :

Aguilarite

Ag4SeS
Dana No: 02.04.01.03 Strunz No: 02.BA.30b
Locality:

 

Notes:

 

 
   
 


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