Mineralogy Database

Brass Mineral Data

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General Brass Information

Help on Chemical  Formula: Chemical Formula: Cu3Zn2
Help on Composition: Composition: Molecular Weight = 321.42 gm
   Zinc    40.69 %  Zn
   Copper  59.31 %  Cu
          100.00 % 
Help on Empirical Formula: Empirical Formula: Cu3Zn2
Help on Environment: Environment: Base metal ore bodies containing copper and zink sulfides where partial oxidation can create the mineral.
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as an alloy of copper and zinc.
Help on Synonym: Synonym: Laiton

Brass Image

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Comments: Small brassy metallic grain of brass.
Location: Nurek Ore District, Uzbekistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Brass Crystallography

Help on Crystal System: Crystal System: Isometric Space Group: Unk

Physical Properties of Brass

Help on Color: Color: Yellow.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Luster: Luster: Metallic

Calculated Properties of Brass

Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEBrass = 48.42 barns/electron
U=PEBrass x rElectron Density= . barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Brass is Not Radioactive

Brass Classification

Help on  Dana Class: Dana Class: (01)Native Elements
  (01.01)with metallic elements other than the platinum group
  (01.01.06)Dana Group Brass* Cu3Zn2 Unk Cubic Danbaite CuZn2 Unk Cubic Zhanghengite (Cu,Zn,Fe,Al,Cr) I m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 01.AB.10a 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
  01.A - Metals and Intermetallic Alloys
  01.AB -Zinc-brass family (Cu-Zn alloys)
01.AB.10a Brass* Cu3Zn2 Unk Cubic
01.AB.10a Zhanghengite (Cu,Zn,Fe,Al,Cr) I m3m 4/m 3 2/m

Other Brass Information

Help on References: References: NAME( Athena) PHYS. PROP.(Am.Min.,Vol.77,p446,1992)
Help on See Also: See Also: Links to other databases for Brass :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Dana No: Strunz No: 01.AB.10a