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Uytenbogaardtite Mineral Data
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General Uytenbogaardtite Information
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 Chemical Formula: |
Ag3AuS2 |
| Composition: |
Molecular Weight = 584.70 gm |
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Silver 55.35 % Ag |
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Gold 33.69 % Au |
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Sulfur 10.97 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Ag3AuS2 |
| Environment: |
Hydrothermal Au-Ag-quartz veins. |
| IMA Status: |
Approved IMA 1978 |
| Locality: |
Tambang Sawah, Benkoelen district, Indonesia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Willem Uytenbogaardt (1918- ), Professor of Geology, Technical University, Delft, The Netherlands, prominent ore microscopist. |
| Name Pronunciation: |
Uytenbogaardtite + Pronunciation  |
| Synonym: |
ICSD 15732 |
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PDF 33-587 |
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Uytenbogaardtite Image |
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Images:
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Uytenbogaardtite
Comments: Gray crystal grains of uytenbogaardtite to 1mm throughout matrix with electrum.
Location: Bullfrog mine, Nye County, Nevada, USA.
Scale: Slab 1cm thick 6x6cm.
© Tom Loomis / Dakota Matrix |
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Uytenbogaardtite Crystallography
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| Axial Ratios: |
a:c = 1:1.01025 |
| Cell Dimensions: |
a = 9.75, c = 9.85, Z = 8; V = 936.37 Den(Calc)= 8.29 |
| Crystal System: |
Tetragonal - Trapezohedral H-M Symbol (4 2 2) Space Group: P 4122 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.712(1), 2.59(0.9), 6.94(0.4), |
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Physical Properties of Uytenbogaardtite
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| Color: |
Gray white. |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
2 - Gypsum |
| Luster: |
Metallic |
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Optical Properties of Uytenbogaardtite
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| Optical Data: |
NCalc= 2.27 - from Gladstone-Dale relationship (KC = 0.1532) where Ncalc=Dcalc*KC+1
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| RL Anisotrophism: |
Strong, without distinct colors. |
| RL Color: |
Gray-white. |
| RL Pleochroism: |
Distinct in air, gray-white to gray-white with a brownish tint. |
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Calculated Properties of Uytenbogaardtite
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| Electron Density: |
Bulk Density (Electron Density)=7.15 gm/cc
note: Specific Gravity of Uytenbogaardtite =8.29 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0008226226
Boson Index = 0.9991773774 |
| Photoelectric: |
PEUytenbogaardtite = 678.66 barns/electron
U=PEUytenbogaardtite x rElectron Density=4,849.53 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Uytenbogaardtite is Not Radioactive |
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Uytenbogaardtite Classification
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| Dana Class: |
02.04.03.01 (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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(02.04.03)Uytenbogaardtite Group |
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02.04.03.01 Uytenbogaardtite Ag3AuS2 P 4122 4 2 2 |
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02.04.03.02 Fischesserite Ag3AuSe2 I 4132 4 3 2 |
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02.04.03.03 Petzite Ag3AuTe2 I 4132 4 3 2 |
| Strunz Class: |
02.BA.40b 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.40b Uytenbogaardtite Ag3AuS2 P 4122 4 2 2 |
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Other Uytenbogaardtite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Uytenbogaardtite :
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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Uytenbogaardtite
Ag3AuS2
Dana No: 02.04.03.01 Strunz No: 02.BA.40b
Locality:
Notes:
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