Luis reports that the great and renowned Herja mine near Baia Marie, Maramures, finally closed in December 2006, after who knows how many decades of yielding superb specimens of semseyite, stibnite, sphalerite, bournonite, fizelyite
and other sulfides common and rare, as well as fine calcite, gypsum and quartz.
In British Columbia the Silver Tunnel of the Van Silver mine has produced hundreds of rare and beautiful crystal specimens of lead and silver antimony sulfides, including fizelyite crystals which are among the best in the world.
Diaphorite and fizelyite were first observed in Canada at the Van Silver mine, and it is the second reported occurrence in Canada for semseyite, miargyrite and pyrostilpnite.
Fizelyite is the last mineral to simultaneously deposit with ankerite.
The lustrous gray-black fizelyite is highly variable in habit.
The presence of boulangerite with silver minerals is often an indicator of nearby fizelyite. Fizelyite crystals have been found growing on both miargyrite and diaphorite crystals.
Semseyite has been observed in co-deposition with fizelyite and on calcite.
Hoda and Chang (1975) found that, in the 350[degrees] to 250[degrees]C range, miargyrite, diaphorite, fizelyite, semseyite, freieslebenite and boulangerite crystallized sequentially, and in the 250[degrees] to 180[degrees]C range pyrargyrite and pyrostilpnite precipitated.