Mineralogy Database

Argentite Mineral Data

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General Argentite Information

Help on Chemical  Formula: Chemical Formula: Ag2S
Help on Composition: Composition: Molecular Weight = 247.80 gm
   Silver  87.06 %  Ag
   Sulfur  12.94 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: Ag2S
Help on Environment: Environment: Low temperature ore veins.
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Mexico, Saxony, Great Britain and Kongsberg, Norway are notable localities. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: After the Latin, argentum, meaning "silver". From the Greek, akanta, meaning "arrow." Argentite is stable above 179 C. Acanthite is stable below 179 C.
Help on Name Pronunciation: Name Pronunciation: Argentite + Pronunciation Say ARGENTITE
Help on Synonym: Synonym: ICSD 9586
  PDF 4-774
  Silver Glance
 

Argentite Image

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  Argentite   Acanthite

Comments: Dark metallic acanthite crystals up to 3 mm. Most of the crystals are a cubic habit, so the acanthite is pseudomorphing the original argentite.
Location: San Juan de Rayas Mine (Rayas Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico. Scale: 18x12x12 mm.
© John Betts - Fine Minerals

Argentite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 4.89, Z = 2; V = 116.93 Den(Calc)= 7.04
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: I m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.819(1), 2.24(1), 3.17(1),
Help on Forms: Forms:

Mouse
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RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

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I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
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Help on Above

Forms: ( 1 1 1) ( 0 1 1) ( 1 0 0) ( 1 1 2)

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Physical Properties of Argentite

Help on Cleavage: Cleavage: {001} Poor, {110} Poor
Help on Color: Color: Black, Lead gray.
Help on Density: Density: 7.2 - 7.4, Average = 7.3
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Arborescent - "Tree like" growths of branched systems (e.g. silver).
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Skeletal - Crystals form crude outlines with missing faces.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: black
 

Calculated Properties of Argentite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.25 gm/cc
note: Specific Gravity of Argentite =7.04 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0009705112
Boson Index = 0.9990294888
Help on Photoelectric: Photoelectric: PEArgentite = 224.26 barns/electron
U=PEArgentite x rElectron Density=1,401.66 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Argentite is Not Radioactive
 

Argentite Classification

Help on  Dana Class: Dana Class: 02.00.00.00 (02)Sulfide Minerals
  (02.00)Without Dana Classification Numbers
  (02.00.00)Chalcocite Group
 
02.00.00.00 Argentite* Ag2S I m3m 4/m 3 2/m
 
02.00.00.00 Bayankhanite? Cu6HgS4 Unk Hex
 
02.00.00.00 Bismutoplagionite* 5PbS.4Bi2S3 Unk Ortho
 
02.00.00.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3
 
02.00.00.00 Colimaite K3VS4 P nma 2/m 2/m 2/m
 
02.00.00.00 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m
 
02.00.00.00 Dilithium* Li2Te P 222 2 2 2
 
02.00.00.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3
 
02.00.00.00 Ferdisilicite* FeSi2 P 4/mmm 4/m 2/m 2/m
 
02.00.00.00 Fersilicite* FeSi P 213 2 3
 
02.00.00.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m
 
02.00.00.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm
 
02.00.00.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m
 
02.00.00.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic
 
02.00.00.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic
 
02.00.00.00 Jaipurite* CoS P 63/mmc 6/m 2/m 2/m
 
02.00.00.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono
 
02.00.00.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic
 
02.00.00.00 Plumosite* Pb2Sb2S5 Mono
 
02.00.00.00 Protojoseite* Bi4TeS2(?) R 3m 3 2/m
 
02.00.00.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm
 
02.00.00.00 Stibioenargite* Cu3(Sb,As)S4 Unk Ortho
 
02.00.00.00 Sztrokayite* Bi3TeS2 Trig ? Trig
 
02.00.00.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra
Help on  Strunz Class: Strunz Class: 02.BA.30a 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.30a Acanthite Ag2S P 21/n 2/m
 
02.BA.30a Argentite* Ag2S I m3m 4/m 3 2/m
 

Other Argentite Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Argentite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - GeoScienceWorld
5 - Glendale Community College
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - Scandinavian mineral gallery
14 - WWW-MINCRYST

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Print or Cut-and-Paste your Argentite Specimen Label here :

Argentite

Ag2S
Dana No: 02.00.00.00 Strunz No: 02.BA.30a
Locality:

 

Notes:

 

 
   
 


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