30090 Cassiterite, Viloco Mine (Araca Mine), Loayza Province, La Paz, Bolivia April 30, 2020 Steve Bolivia South America Heavy specimen. Most of the matrix is cassiterite too. Video best viewed full screen.
Europe Portugal 20111 Fluorapatite, Cassiterite, Arsenopyrite, Panasqueira Mines, Covilhã, Castelo Branco, Portugal March 1, 2023
