Mineralogy Database

Stromeyerite Mineral Data

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General Stromeyerite Information

Help on Chemical  Formula: Chemical Formula: AgCuS
Help on Composition: Composition: Molecular Weight = 203.48 gm
   Copper  31.23 %  Cu
   Silver  53.01 %  Ag
   Sulfur  15.76 %  S
          100.00 % 
Help on Empirical Formula: Empirical Formula: CuAgS
Help on Environment: Environment: Copper-silver veins where silver replaces copper in bornite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1832
Help on Locality: Locality: Zmeinogorsk mine, Kolyvan, Siberia, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Friedrich Stromeyer (1776-1835), German mineralogiist and chemist,
Help on Name Pronunciation: Name Pronunciation: Stromeyerite + Pronunciation Say STROMEYERITE
Help on Synonym: Synonym: ICSD 66580
  PDF 44-1436

Stromeyerite Image

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Comments: 1.5 cm spray of hair-like Stromeyerite crystals on quartz and calcite matrix.
Location: Vrancice near Pribram, Czech Republic. Scale: Picture size 2 cm.
© John Veevaert

Stromeyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6096:1:1.1996
Help on Cell Dimensions: Cell Dimensions: a = 4.06, b = 6.66, c = 7.99, Z = 4; V = 216.05 Den(Calc)= 6.26
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mcm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.61(1), 2.07(0.8), 3.33(0.8),

Physical Properties of Stromeyerite

Help on Cleavage: Cleavage: None
Help on Color: Color: Blue gray, Dark blue, Dark steel gray, Steel gray.
Help on Density: Density: 6 - 6.3, Average = 6.15
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: steel gray

Optical Properties of Stromeyerite

Help on RL Anisotrophism: RL Anisotrophism: Strong, vivid blue and deep violet.
Help on RL Color: RL Color: White, dull grayish.
Help on RL Pleochroism: RL Pleochroism: Weak in air, stronger in oil, grayish brown to whitish gray, with a faint bluish gray tint or creamy.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Stromeyerite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   32.90   40.00 
 420 nm   32.20   40.70 
 440 nm   31.50   41.40 
 460 nm   30.40   38.60 
 480 nm   29.20   36.00 
 500 nm   28.40   33.80 
 520 nm   28.00   32.10 
 540 nm   27.70   31.00 
 560 nm   27.50   30.20 
 580 nm   27.40   29.70 
 600 nm   27.30   29.40 
 620 nm   27.30   29.10 
 640 nm   27.30   28.90 
 660 nm   27.40   28.80 
 680 nm   27.60   28.90 
 700 nm   27.80   29.00 
Calculated Relative Intensity Colors of Stromeyerite in Air
   0%   40%   80% 100% 120% 160% 200% 240% 280% 320%

Calculated Properties of Stromeyerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.66 gm/cc
note: Specific Gravity of Stromeyerite =6.26 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0011819086
Boson Index = 0.9988180914
Help on Photoelectric: Photoelectric: PEStromeyerite = 149.03 barns/electron
U=PEStromeyerite x rElectron Density= 843.63 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stromeyerite is Not Radioactive

Stromeyerite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.06)Stromeyerite Group Stromeyerite AgCuS C mcm 2/m 2/m 2/m Eucairite CuAgSe Pmmn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 02.BA.25a 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.25a Stromeyerite AgCuS C mcm 2/m 2/m 2/m

Other Stromeyerite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Stromeyerite :
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.BA.25a





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