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Stromeyerite Mineral Data
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General Stromeyerite Information
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 Chemical Formula: |
AgCuS |
| Composition: |
Molecular Weight = 203.48 gm |
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Copper 31.23 % Cu |
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Silver 53.01 % Ag |
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Sulfur 15.76 % S |
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______ |
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100.00 % |
| Empirical Formula: |
CuAgS |
| Environment: |
Copper-silver veins where silver replaces copper in bornite. |
| IMA Status: |
Valid Species (Pre-IMA) 1832 |
| Locality: |
Zmeinogorsk mine, Kolyvan, Siberia, Russia Link to MinDat.org Location Data. |
| Name Origin: |
Named after Friedrich Stromeyer (1776-1835), German mineralogiist and chemist, |
| Name Pronunciation: |
Stromeyerite + Pronunciation  |
| Synonym: |
ICSD 66580 |
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PDF 44-1436 |
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Stromeyerite Image |
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Images:
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Stromeyerite
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 |
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Stromeyerite Crystallography
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| Axial Ratios: |
a:b:c =0.6096:1:1.1996 |
| Cell Dimensions: |
a = 4.06, b = 6.66, c = 7.99, Z = 4; V = 216.05 Den(Calc)= 6.26 |
| Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: C mcm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.61(1), 2.07(0.8), 3.33(0.8), |
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Physical Properties of Stromeyerite
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| Cleavage: |
None |
| Color: |
Blue gray, Dark blue, Dark steel gray, Steel gray. |
| Density: |
6 - 6.3, Average = 6.15 |
| Diaphaneity: |
Opaque |
| Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
| Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
| Habit: |
Pseudo Hexagonal - Crystals show a hexagonal outline. |
| Hardness: |
2.5-3 - Finger Nail-Calcite |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Nonmagnetic |
| Streak: |
steel gray |
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Optical Properties of Stromeyerite
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| RL Anisotrophism: |
Strong, vivid blue and deep violet. |
| RL Color: |
White, dull grayish. |
| RL Pleochroism: |
Weak in air, stronger in oil, grayish brown to whitish gray, with a faint bluish gray tint or creamy. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Stromeyerite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
32.90 |
40.00 |
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| 420 nm |
32.20 |
40.70 |
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| 440 nm |
31.50 |
41.40 |
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| 460 nm |
30.40 |
38.60 |
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| 480 nm |
29.20 |
36.00 |
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| 500 nm |
28.40 |
33.80 |
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| 520 nm |
28.00 |
32.10 |
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| 540 nm |
27.70 |
31.00 |
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| 560 nm |
27.50 |
30.20 |
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| 580 nm |
27.40 |
29.70 |
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| 600 nm |
27.30 |
29.40 |
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| 620 nm |
27.30 |
29.10 |
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| 640 nm |
27.30 |
28.90 |
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| 660 nm |
27.40 |
28.80 |
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| 680 nm |
27.60 |
28.90 |
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| 700 nm |
27.80 |
29.00 |
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Calculated Relative Intensity Colors of Stromeyerite in Air
Relative
Intensity |
0% |
40% |
80% |
100% |
120% |
160% |
200% |
240% |
280% |
320% |
| R1 |
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| R2 |
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Calculated Properties of Stromeyerite
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| Electron Density: |
Bulk Density (Electron Density)=5.66 gm/cc
note: Specific Gravity of Stromeyerite =6.26 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0011819086
Boson Index = 0.9988180914 |
| Photoelectric: |
PEStromeyerite = 149.03 barns/electron
U=PEStromeyerite x rElectron Density= 843.63 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stromeyerite is Not Radioactive |
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Stromeyerite Classification
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| Dana Class: |
02.04.06.01 (02)Sulfides - Including Selenides and Tellurides |
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(02.04)where Am Bn Xp, with (m+n):p=2:1 |
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(02.04.06)Stromeyerite Group |
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02.04.06.01 Stromeyerite AgCuS C mcm 2/m 2/m 2/m |
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02.04.06.02 Eucairite CuAgSe Pmmn 2/m 2/m 2/m |
| Strunz Class: |
02.BA.25a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BA -With Cu, Ag, Au |
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02.BA.25a Stromeyerite AgCuS C mcm 2/m 2/m 2/m |
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Other Stromeyerite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| 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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Stromeyerite Specimen Label here :
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Stromeyerite
AgCuS
Dana No: 02.04.06.01 Strunz No: 02.BA.25a
Locality:
Notes:
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