The mineral, a lead fluorochloride (formula PbFCl), was discovered sometime around the early 1800s at Bage Mine at Bolehill near Matlock, together with specimens of phosgenite and anglesite.
Mineral ini, fluoroklorida timah (rumus PbFCl), ditemukan sekitar awal tahun 1800-an di Tambang Bage di Bolehill dekat Matlock, bersama contoh-contoh fosgenit dan anjelsit.