Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Eta-bronze

This page is currently not sponsored. Click here to sponsor this page.



Formula:
Cu
 
6
Sn
 
5
System:HexagonalColour:White to bronze
Lustre:MetallicHardness:2


Reported natural occurrence of the alloy in oxidised tin ores.

Originally reported from Panasqueira Mines, Panasqueira, Covilhã, Castelo Branco District, Portugal.

Classification of Eta-bronze

IMA status:Published without Approval
Nickel-Strunz 10th (pending) edition ID:1.AC.15

1 : ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides)
A : Metals and Intermetallic Alloys
C : Indium-tin family
mindat.org URL:http://www.mindat.org/min-785.html
Please feel free to link to this page.

Physical Properties of Eta-bronze

Lustre:Metallic
Colour:White to bronze
Hardness (Mohs):2

Crystallography of Eta-bronze

Crystal System:Hexagonal

Chemical Properties of Eta-bronze

Formula:
Cu
 
6
Sn
 
5
Idealised Formula:
Cu
 
1.2
Sn
Essential elements:Cu, Sn
All elements listed in formula:Cu, Sn

Relationship of Eta-bronze to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
1.AC.05Indium
In
1.AC.10Tin
Sn
1.AC.15Sorosite
Cu
 
1+x
(Sn,Sb), where 0.1 ≤ x ≤ 0.2
1.AC.15Yuanjiangite
AuSn
1.AC.15UM1965-07-E:CuSn
Cu
 
3
Sn

Other Names for Eta-bronze

Synonyms:
Bronze-n'Cu6Sn5η-BronzeNative Bronzen'-Bronze
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Eta-bronze

Search Engines:
  • Look for Eta-bronze on Google
  • Look for Eta-bronze images on Google
    • Mineral Dealers:
  • Wilensky Fine Minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Search for minerals at Heliodor
  • Search for - Eta-bronze - on e-Rocks Mineral Sales & Auctions
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Rare and Unusual minerals at Mineralogical Research Company
  • Find Eta-bronze on www.crystalclassics.co.uk
  • The Arkenstone - Fine Minerals
  • High-end worldwide specimens & outstanding customer service
  • Search for Eta-bronze from all mineral dealers at minfind.com
  • Edwards Minerals - Fine Specimens
  • SpiriferMinerals.com - high quality low prices
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Eta-bronze

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Portugal
     
    • Castelo Branco District
      • Covilhã
        • Panasqueira
    		No reference listed
    Russia
     
    • Far-Eastern Region
      • Chukotskii Autonomous Okrug
        • Okhotsk-Chukotka belt
    		[AmMin 82:821]
    U.S. Virgin Islands
     
    Alminas, Henry V.; Foord, Eugene E.; Tucker, Robert E. (1994) Geochemistry, mineralogy, and geochronology of the U.S. Virgin Islands USGS Bulletin 2057 36p
    • St Thomas
    		Alminas, Henry V.; Foord, Eugene E.; Tucker, Robert E. (1994) Geochemistry, mineralogy, and geochronology of the U.S. Virgin Islands USGS Bulletin 2057 36p
    Uzbekistan
     
    • Sidaryo (Syrdar'ya) Viloyati
      • North Nuratau Range
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 28th Oct 2011 22:25:26
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds