franckeite
/ˈfraŋkəaɪt/Mineralogy
noun
A lead sulphide mineral also containing tin, iron, and antimony, typically found in association with metamorphic tin deposits and occurring as lustrous greyish-black tabular crystals, notably in the tin mines of Bolivia.
- Formula FePb5Sn3Sb2S14. Crystal system: triclinic..
Origin
Late 19th century; earliest use found in Journal of the Chemical Society. From German Franckeit from the name of Carl Francke and Ernst (also Ernest) Francke, German mining engineers, who discovered the mineral + -it, with remodelling of the ending after -ite.
- Ruskinite
- Ruskinize
- Ruskin, John
- Ruskiny
- rusky
- rusma
- Rusnak
- Russ
- russel
- Russel fence
- Russell antinomy
- Russell, Bertrand
- Russell, Bill
- Russell body
- Russell diagram
- Russell fence
- Russell, George William
- Russell Group
- Russell, Henry Norris
- Russellian
- Russellism
- Russellite
- Russell, John
- Russell, Ken
- Russell's antinomy