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Neyite Mineral Data
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General Neyite Information
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 Chemical Formula: |
AgCu3Pb12.5Bi13S34 |
| Composition: |
Molecular Weight = 6,619.03 gm |
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Copper 2.88 % Cu |
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Silver 1.63 % Ag |
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Bismuth 41.04 % Bi |
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Lead 37.88 % Pb |
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Sulfur 16.57 % S |
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______ |
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100.00 % |
| Empirical Formula: |
AgCu3Pb12.1Bi13S34.2 |
| Environment: |
Primary sulfide mineral in a porphyry molybdenum deposit. |
| IMA Status: |
Approved IMA 1969 |
| Locality: |
Lime Creek Molybdenum deposit, Patsy Creek, Alice Arm, British Columbia, Canada Link to MinDat.org Location Data. |
| Name Origin: |
Named for Charles Stewart Ney (1918-1975 ), Geologist. |
| Name Pronunciation: |
Neyite  |
| Synonym: |
IMA1968-017 |
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Neyite Image |
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Images:
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Neyite Crystallography
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| Axial Ratios: |
a:b:c =9.2192:1:10.736 |
| Cell Dimensions: |
a = 37.527, b = 4.0705, c = 43.701, Z = 4; beta = 108.801° V = 6,319.31 Den(Calc)= 6.96 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.92(1), 3.51(1), 3.72(1), |
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Physical Properties of Neyite
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| Cleavage: |
None |
| Color: |
Lead gray, Gray blue, Yellow blue, Silver gray. |
| Density: |
7.02 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
| Hardness: |
2.5 - Finger Nail |
| Luster: |
Metallic |
| Streak: |
gray |
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Optical Properties of Neyite
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| RL Anisotrophism: |
Moderate, light gray, yellow-green, and light reddish brown to gray-black. |
| RL Color: |
Galena white. |
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Calculated Properties of Neyite
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| Electron Density: |
Bulk Density (Electron Density)=5.79 gm/cc
note: Specific Gravity of Neyite =6.96 gm/cc.
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| Fermion Index: |
Fermion Index = 0.08
Boson Index = 0.92 |
| Photoelectric: |
PENeyite =1,500.32 barns/electron
U=PENeyite x rElectron Density=8,684.44 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Neyite is Not Radioactive |
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Neyite Classification
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| Dana Class: |
03.05.01.01 (03)Sulfides - Sulfosalts |
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(03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.05.01)Dana Group |
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03.05.01.01 Neyite AgCu3Pb12.5Bi13S34 C 2/m 2/m |
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03.05.01.02 IMA2008-053! Cu7Pb27Bi25S68 C 2/m 2/m |
| Strunz Class: |
02.JB.25i 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.J - Sulfosalts of PbS Archetype |
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02.JB -Galena derivatives, with Pb |
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02.JB.25i Neyite AgCu3Pb12.5Bi13S34 C 2/m 2/m |
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02.JB.25i IMA2008-053! Cu7Pb27Bi25S68 C 2/m 2/m |
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Other Neyite Information
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Neyite :
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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Print or Cut-and-Paste your Neyite Specimen Label here :
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Neyite
AgCu3Pb12.5Bi13S34
Dana No: 03.05.01.01 Strunz No: 02.JB.25i
Locality:
Notes:
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