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).
In 1973 Swoboda returned to Mexico and spent three years mining for boleite and cumengite
at the Amelia mine, Boleo, Baja California.
Pierre Bariand, curator at the Sorbonne in Paris, brought the world's largest cumengite
crystals, found at Boleo in Baja California, Mexico.
For a single crystal, the largest cumengite
in the world, exhibited once again by the Sorbonne, attracted a lot of attention.
The second presentation of the Miguel Romero Memorial Award went to Pierre Bariand, who again brought some of those super-rare cumengite
crystals from Boleo, Mexico.
It is a star-shaped compound octahedron: try to imagine a hematite pseudomorph after a giant cumengite
crystal and you will get the picture.
The 11 cumengites
pictured on one page are individually as small as 0.
Once again Pierre Bariand brought those incredible Boleo cumengites