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Silver Mineral Data
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General Silver Information
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 Chemical Formula: |
Ag |
| Composition: |
Molecular Weight = 107.87 gm |
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Silver 100.00 % Ag |
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______ |
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100.00 % |
| Empirical Formula: |
Ag |
| Environment: |
In sulfide ore veins. |
| IMA Status: |
Valid Species (Pre-IMA) Prehistoric |
| Locality: |
Mexico and Norway have large deposits of silver. Known to ancient civilizations. Link to MinDat.org Location Data. |
| Name Origin: |
Anglo-Saxon, of unknown origin. |
| Name Pronunciation: |
Silver  |
| Synonym: |
Cocinerite - Mixture with chalcocite |
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Electrum - Au Alloy |
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Silver Image |
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Images:
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Gold Silver
Comments: Very well crystallized Electrum (Silver rich gold) on quartz. The analysis gave 31.47% silver.
Location: Verespatak (now Rosia Montana), Transylvania, Romania.
Scale: 2.8 x 3.4 cm.
© Fabre Minerals |
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Images:
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Silver
Comments: Numerous fine, silver wires to 4 mm in diameter attached to a matrix of massive white calcite and minor sulfides.
Location: Himmelsfahrt mine, near Freiberg, Saxony, Germany.
Scale: 4 x 4.5 x 6 cm.
© Dan Weinrich |
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Images:
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Silver Stephanite
Comments: Thick, ropy, native silver wires with blocky, well-crystallized stephanite on white and tan calcite matrix.
Location: Freiberg, Erzgebirge, Saxony, Alemania, Germay.
Scale: Picture size 3 cm.
© Fabre Minerals |
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Images:
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Silver Crystallography
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| Cell Dimensions: |
a = 4.0862, Z = 4; V = 68.23 Den(Calc)= 10.50 |
| Crystal System: |
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.359(1), 2.044(0.4), 1.231(0.26), |
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Physical Properties of Silver
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| Cleavage: |
None |
| Color: |
Silver white, Gray white, Gray. |
| Density: |
10 - 11, Average = 10.5 |
| Diaphaneity: |
Opaque |
| Fracture: |
Hackly - Jagged, torn surfaces, (e.g. fractured metals). |
| Habit: |
Arborescent - "Tree like" growths of branched systems (e.g. silver). |
| Habit: |
Dendritic - Branching "tree-like" growths of great complexity (e.g. pyrolusite). |
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
| Hardness: |
2.5-3 - Finger Nail-Calcite |
| Luminescence: |
Non-fluorescent. |
| Luster: |
Metallic |
| Magnetism: |
Nonmagnetic |
| Streak: |
silver white |
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Optical Properties of Silver
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| RL Color: |
Brilliant silver white. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Silver in Air
| λ |
R |
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∑ R(λ) |
| 400 nm |
69.80 |
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| 420 nm |
71.00 |
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| 440 nm |
73.20 |
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| 460 nm |
75.00 |
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| 480 nm |
76.80 |
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| 500 nm |
78.20 |
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| 520 nm |
79.50 |
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| 540 nm |
80.80 |
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| 560 nm |
81.70 |
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| 580 nm |
82.50 |
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| 600 nm |
83.20 |
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| 620 nm |
84.00 |
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| 640 nm |
84.60 |
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| 660 nm |
85.20 |
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| 680 nm |
86.00 |
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| 700 nm |
86.50 |
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Calculated Relative Intensity Colors of Silver in Air
Relative
Intensity |
0% |
20% |
40% |
60% |
80% |
100% |
120% |
| R |
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Calculated Properties of Silver
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| Electron Density: |
Bulk Density (Electron Density)=9.15 gm/cc
note: Specific Gravity of Silver =10.5 gm/cc.
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| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PESilver = 261.51 barns/electron
U=PESilver x rElectron Density=2,392.85 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Silver is Not Radioactive |
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Silver Classification
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| Dana Class: |
01.01.01.02 (01)Native Elements |
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(01.01)with metallic elements other than the platinum group |
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(01.01.01)Gold group |
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01.01.01.01 Gold Au F m3m 4/m 3 2/m |
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01.01.01.02 Silver Ag F m3m 4/m 3 2/m |
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01.01.01.03 Copper Cu F m3m 4/m 3 2/m |
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01.01.01.04 Lead Pb F m3m 4/m 3 2/m |
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01.01.01.05 Aluminum Al F m3m,P m3m 4/m 3 2/m |
| Strunz Class: |
01.AA.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) |
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01.A - Metals and Intermetallic Alloys |
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01.AA -Copper-cupalite family |
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01.AA.05 Aluminum Al F m3m,P m3m 4/m 3 2/m |
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01.AA.05 Copper Cu F m3m 4/m 3 2/m |
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01.AA.05 Lead Pb F m3m 4/m 3 2/m |
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01.AA.05 Gold Au F m3m 4/m 3 2/m |
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01.AA.05 Nickel Ni F m3m 4/m 3 2/m |
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01.AA.05 Silver Ag F m3m 4/m 3 2/m |
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Other Silver Information
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| References: |
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Silver :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - Franklin Minerals(Dunn)
5 - Franklin Minerals(Palache)
6 - GeoScienceWorld
7 - Glendale Community College
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineral and Gemstone Kingdom
15 - Mineralienatlas (Deutsch)
16 - Online Mineral Museum
17 - Philatelic Mineralogy
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - Scandinavian mineral gallery
21 - University of Texas at Austin
22 - WWW-MINCRYST
23 - YupRocks
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Silver
Ag
Dana No: 01.01.01.02 Strunz No: 01.AA.05
Locality:
Notes:
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