TY - JOUR T1 - Description of a Triple Sulphuret, of Lead, Antimony, and Copper, from Cornwall; With Some Observations upon the Various Modes of Attraction Which Influence the Formation of Mineral Substances, and upon the Different Kinds of Sulphuret of Copper JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 94 SP - 30 EP - 62 PY - 1804/01/01/ UR - http://dx.doi.org/10.1098/rstl.1804.0006 M3 - doi:10.1098/rstl.1804.0006 AU - de Bournon, C. ER -