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).
Of course, one can't be sure that the original isometric mineral was boleite
--but Jack and Marty have found loose boleite
crystals to 3 mm at the same outcrop, and Mexican-minerals expert Peter Megaw also believes that the original crystals were indeed boleite
, although Marcus Origlieri holds out for cuprite.
That's interesting: they are little dark blue cubes like boleite
, but look at that strange cross-like pattern on the faces of the cubes?
Bill often collected far afield--traveling to Mexico for wulfenite at Los Lamentos and boleite
at Santa Rosalia; to Spain for the famous pyrites; to Prince of Wales Island, Alaska for epidote; to the Yukon Territory for lazulite; to almost all the localities in California, Nevada, Arizona and Utah.
In 1973 Swoboda returned to Mexico and spent three years mining for boleite
and cumengite at the Amelia mine, Boleo, Baja California.
Fine examples of cerussite, dioptase, malachite, azurite, wulfenite, smithsonite and vanadinite have been collected there, as well as some of the finest known examples of a number of rarer species such as boleite
, diaboleite, caledonite, hydrocerussite, linarite, matlockite and leadhillite.
Most "educational" for me in the Broken Hill department were the Smithsonian's 7-cm cluster of sharp crystals of native antimony and stibnite, with bright metallic crystals of antimony to 1 cm, and, in the Natural History Museum of London's "general" Australian case, a matrix studded with sharp, brilliant blue cubes of boleite
A surprising quantity of the rare mineral penfieldite as small, sharp, pyramidal crystals lining vugs in galena and associat ed with powdery boleite
was found in 2001 at the Margarita mine in Sierra Gorda.
Box 2091, Tehachapi, CA 93581) has acquired about 20 very nice specimens of the boleite
that Ed Swoboda mined in the 1970's from the renowned Amelia mine at Boleo, Baja California, Mexico.
Almost randomly I'll select for individual raves Kerith Graeber's red grossular from Coahuila, her 4-cm kottingite spray from the Ojuela mine, and her matrix boleite
with three 1.
The crystals are fat, lustrous, largely undamaged, of a color like that of dark boleite
, and are 1.
The name, diaboleite, was chosen for the mineral to distinguish it (Greek "dia" = "apart") from the similar mineral, boleite