Canada
1478 Birnessite, Serandite, Leucophanite, Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carriere Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada
Brown-black birnessite pseudomorph after a prismatic 20mm serandite crystal with no matrix attached. The serandite crystallized first, the birnessite replaced the serandite atom-by-atom maintaining the crystal form, but changing the composition. Green crystals are leucophanite. Size 23x12x8mm. Ex John Betts, number 57821.
0794 Xanthoconite, Proustite, Dyscrasite, O’Brien Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Vintage micro. This specimen was part of the collection of micromount Hall of Famer (ind. 1997) Bill Henderson. According to Henderson’s label, Neal Yedlin, the most renowned of all micromounters, originally placed it into circulation, passing it on to Bentley Mins, whom we might assume to be the well known...