Goodchild, of the Scottish Geological Survey, found wulfenite there in 1875 but the locality only really became of interest to collectors in the 1950s following the reporting of a suite of rare supergene minerals including bayldonite, duftite, beudantite, carminite, lindgrenite and
stolzite (the first authenticated British occurrence).
Greg and Lettsom (1858) cite the Force Crag mine as the first occurrence of
stolzite ever found in England, though later writers believe that
stolzite is unlikely there, given the mineralogical and geological setting of the vein.
There are also, of course, much fancier items in the collection, including sharp floater crystals and twins of some truly rare species: senarmontite, glaucodot,
stolzite, hambergite, neptunite, epididymite, a petite cumengite "mace" on boleite, and (naturally) a superb specimen of a member of the whiteite group, specifically of whiteite-(CaFeMg).
1902
Stolzite and Embolite, Broken Hill, New South Wales, Australia, no.
Cerussites, fine rhodonite in galena and especially a world-class
stolzite garnered the most praise.
I can't mention them all, but, for example, the famous Wheatley mine near Phoenixville, source of the 19th century's best American pyromorphites, was also the source of the Kosnars' miniature specimens of cerussite, mimetite, wulfenite, malachite, atacamite and
stolzite; it was an education just to see these.
The world's best
stolzite crystals, we now know, are orange 3-cm bypyramids (which look just like wulfenite) from a 1993 Tsumeb pocket.
Associated minor minerals occurring as coatings in fractures, include tourmaline, topaz, apatite, titanite, rutile,
stolzite, arsenopyrite, bornite, chalcopyrite and molybdenite (in no particular order).