Mineralogy Database

Argentopyrite Mineral Data

Search Webmineral :

General Argentopyrite Information

Help on Chemical  Formula: Chemical Formula: AgFe2S3
Help on Composition: Composition: Molecular Weight = 315.76 gm
   Iron    35.37 %  Fe
   Silver  34.16 %  Ag
   Sulfur  30.47 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: AgFe3+2S3
Help on Environment: Environment: Occurs as crusts of euhedral crystals formed in hydrothermal veins.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: From St. Andreasberg, Harz; Marienberg, Schneeberg, Johanngeorgenstadt, and Freiberg, Saxony; and at the Anton mine, Weiden, Black Forest, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For its composition and physical similarity to pyrite.
Help on Name Pronunciation: Name Pronunciation: Argentopyrite + Pronunciation Say ARGENTOPYRITE

Argentopyrite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Metallic, twinned argentopyrite grain on matrix.
Location: St. Andreasberg, Harz, Lower Saxony, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argentopyrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5789:1:0.5623
Help on Cell Dimensions: Cell Dimensions: a = 6.64, b = 11.47, c = 6.45, Z = 4; V = 491.24 Den(Calc)= 4.27
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmmn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.318(1), 3.341(1), 1.808(0.7),

Physical Properties of Argentopyrite

Help on Cleavage: Cleavage: None
Help on Color: Color: Blue, Bronze brown, Green, Yellow, White.
Help on Density: Density: 4.25
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic

Optical Properties of Argentopyrite

Help on RL Anisotrophism: RL Anisotrophism: Strong, deep blue to pale blue-gray.
Help on RL Color: RL Color: White, bright gray.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Argentopyrite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   20.80   29.10 
 420 nm   22.10   30.00 
 440 nm   23.40   30.90 
 460 nm   24.50   31.80 
 480 nm   25.30   32.50 
 500 nm   26.00   33.30 
 520 nm   26.30   34.00 
 540 nm   26.80   34.70 
 560 nm   27.30   35.30 
 580 nm   28.00   35.80 
 600 nm   28.60   36.40 
 620 nm   29.30   36.80 
 640 nm   30.00   37.20 
 660 nm   30.80   37.40 
 680 nm   31.40   37.60 
 700 nm   32.00   37.80 
Calculated Relative Intensity Colors of Argentopyrite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 360% 380%

Calculated Properties of Argentopyrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.98 gm/cc
note: Specific Gravity of Argentopyrite =4.27 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.009784
Boson Index = 0.990216
Help on Photoelectric: Photoelectric: PEArgentopyrite = 96.36 barns/electron
U=PEArgentopyrite x rElectron Density= 383.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Argentopyrite is Not Radioactive

Argentopyrite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.09)where Am Bn Xp, with (m+n):p=1:1
  (02.09.13)Cubanite Group Cubanite CuFe2S3 Pcmn 2/m 2/m 2/m Argentopyrite AgFe2S3 Pmmn 2/m 2/m 2/m Isocubanite CuFe2S3 F m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 02.CB.65 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CB -With Zn, Fe, Cu, Ag, Au, etc
02.CB.65 Argentopyrite AgFe2S3 Pmmn 2/m 2/m 2/m
02.CB.65 Sternbergite AgFe2S3 C mma 2/m 2/m 2/m

Other Argentopyrite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Argentopyrite :
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

Search for Argentopyrite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Argentopyrite :

Ask about Argentopyrite 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 Argentopyrite Specimen Label here :


Dana No: Strunz No: 02.CB.65





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.