Mineralogy Database

Franckeite Mineral Data

Search Webmineral :

General Franckeite Information

Help on Chemical  Formula: Chemical Formula: (Pb,Sn)6Fe++Sn2Sb2S14
Help on Composition: Composition: Molecular Weight = 1,995.14 gm
   Iron       2.80 %  Fe
   Tin       13.68 %  Sn
   Antimony  12.20 %  Sb
   Lead      48.81 %  Pb
   Sulfur    22.50 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb4.7Sn2.3Fe2+Sb2S14
Help on Environment: Environment: Hydrothermal Ag-Sn deposits and limestone contact metamorphic deposit.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1893
Help on Locality: Locality: Found in Bolivia at Poopo in Oruro and at Las Aminas, southeast of Chocaya, in Potosi. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the mining engineers, Carl and Ernest Francke.
Help on Name Pronunciation: Name Pronunciation: Franckeite + Pronunciation Say FRANCKEITE