Mineralogy Database

Berryite Mineral Data

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General Berryite Information

Help on Chemical  Formula: Chemical Formula: Cu3Ag2Pb3Bi7S16
Help on Composition: Composition: Molecular Weight = 3,015.01 gm
   Copper    6.18 %  Cu
   Silver    6.87 %  Ag
   Bismuth  49.00 %  Bi
   Lead     20.89 %  Pb
   Sulfur   17.06 %  S
           100.00 % 
Help on Empirical Formula: Empirical Formula: Cu2.93Ag1.92Pb3.04Bi7.07S16.04
Help on Environment: Environment: In quartz veins with other sulfides and sulfosalts, and in siderite-rich cryolite.
Help on IMA Status: IMA Status: Approved IMA 1966
Help on Locality: Locality: From the Missouri mine, Park Co., and the Mike mine, San Juan Co., Colorado, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Professor Leonard Gascoigne Berry (1914-1982), mineralogist, Queen's University, Toronto, Canada, who obtained the first X-ray powder pattern of the mineral.
Help on Name Pronunciation: Name Pronunciation: Berryite Say BERRYITE
Help on Synonym: Synonym: IMA1965-013

Berryite Image

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  Berryite   Aikinite

Comments: Fine-grained, gray, metallic granular berryite with silvery, metallic, prismatic aikinite.
Location: Mike Mine, San Juan County, Colorado. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Berryite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.1517:1:7.1765
Help on Cell Dimensions: Cell Dimensions: a = 12.703, b = 4.0305, c = 28.925, Z = 2; beta = 102.484° V = 1,445.93 Den(Calc)= 6.92
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.47(1), 2.89(0.8), 2.8(0.7),

Physical Properties of Berryite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Blue gray, Gray.
Help on Density: Density: 6.7
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Metallic

Optical Properties of Berryite

Help on RL Anisotrophism: RL Anisotrophism: Distinct to strong, from gray-white to red-brown.
Help on RL Color: RL Color: Gray white.
Help on RL Pleochroism: RL Pleochroism: Weak to distinct.

Calculated Properties of Berryite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.82 gm/cc
note: Specific Gravity of Berryite =6.92 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEBerryite =1,341.69 barns/electron
U=PEBerryite x rElectron Density=7,809.01 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Berryite is Not Radioactive

Berryite Classification

Help on  Dana Class: Dana Class: (03)Sulfides - Sulfosalts
  (03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
  (03.06.15)Dana Group Berryite Cu3Ag2Pb3Bi7S16 P 21/m 2/m
Help on  Strunz Class: Strunz Class: 02.HB.20d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.H - Sulfosalts of SnS Archetype
  02.HB -With Cu, Ag, Hg, Fe, Sn and Pb
02.HB.20d Berryite Cu3Ag2Pb3Bi7S16 P 21/m 2/m

Other Berryite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Dana8, AmMin, v91, p1950) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Berryite :
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.HB.20d





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