Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,910,401,878 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Jamesonite

   Also found in: Dictionary/thesaurus, Wikipedia 0.03 sec.
jamesonite [′jām·sə‚nīt]
(mineralogy)
Pb4FeSb6S14A lead-gray to gray-black mineral that crystallizes in the orthorhombic system, occurs in acicular crystals with fibrous or featherlike forms, and has a metallic luster. Also known as feather ore; gray antimony.

Jamesonite 

(named for the Scottish mineralogist R. Jameson, 1774-1854), a mineral from the sulfide group. Its chemical composition is Pb4FeSb6S14; Cu, Ag, and Zn are present as impurities. Jamesonite has a complex, chain-type structure and crystallizes in the monoclinic system. It forms filiform-acicular, capillary, felted, and granular aggregates, and, more rarely, fine acicular or fibrous lead-gray crystals with a metallic luster. Jamesonite is brittle. Its hardness on the mineralogical scale is 2-3, and its density measures 5,500-6,000 kg/m3. It is found in ores of lead-zinc hydrothermal deposits.



Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
They can be weakly mineralized in places with arsenopyrite, pyrite and rare jamesonite and boulangerite in a quartz gangue.
Gold mineralization in the 2004 Phase 1 drill holes was in the form of fine grained and visible free gold associated with quartz veins, stockworks and quartz rich shear zones containing between 1 percent to 3 percent pyrite, arsenopyrite and jamesonite.
Unaltered quartz veins containing jamesonite were discovered in a shear zone in Trench 1.
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.