Sulpheret of Copper, containing Sulpheret of Iron, from Berks county copper mine

Object Status:

Unlocated

Primary Source Reference:

Poulson's American Daily Advertiser (Philadelphia) 4 Jan 1809

Notes:

Chalcopyrite (copper) and pyrite (iron).

Joseph Cloud (1770-1845) was the chief assayer at the U.S. Mint at Philadelphia from 1797 to 1836.