Especially since World War II, the pegmatites of the state of Minas Gerais have yielded some of the world's finest specimens of topaz, chrysoberyl, euclase, elbaite, and beryl (in all of its colored varieties); phosphate-rich pegmatites of the same state have furnished the world's finest specimens of brazilianite
, beryllonite, eosphorite, hydroxylherderite, amblygonite and more; complex pegmatites of other kinds have provided cassiterite, xenotime, monazite and several rare-earth species; Brazilian specimens of titanite, phenakite, fluorapatite, kyanite, scheelite, spessartine and bertrandite are among the world's very best.
In 1948 Burnham offered brazilianite
crystals (no doubt from the type locality at Corrego Frio, Brazil) in crystals to 2 inches, priced at $15; pink morganite beryl crystal groups from Brazil; and paravauxite from Llallagua, Bolivia, among many others.
Still in Brazil in 1945, he continued visiting important mineral localities, finding a wealth of gem species including fabulous brazilianite
crystals (still the world's best) at the type locality of Corrego Frio.
The Telirio mine has been a known producer of brazilianite
since at least the early 1980's, but a few years ago the "mother lode" was struck there, yielding hundreds of highly aesthetic specimens.
In August 1946 he announced his acquisition of the "largest and finest lot of brazilianite
crystals ever sent to this country.
br), had laid out the contents of a spectacular new find, in December 2006, of brazilianite
in the Telirio mine, Linopolis area, Minas Gerais.
He initiated, or was active in, various specimen mining projects in Vera Cruz, Guerrero, and Sonora, Mexico; the Otjua mine in Namibia; chrysoberyl, topaz and brazilianite
localities in Brazil; the De Maria gold mine in California; the Blanchard mine in New Mexico; the Bunker Hill mine in Idaho; the Block D mine area in Arusha, Tanzania; and a new epidote locality in Kenya which he worked with the legendary African explorer Campbell Bridges.
1942) tourmaline; garnet Etiro pegmatite Topaz, brazilianite
, Miller (1969) eosphorite Kanona-Erongo Schorl; garnet Frommurze et al.
Fred also wrote hundreds of popular magazine articles, and numerous articles in technical mineralogy journals; he published the first descriptions of the new minerals brazilianite
, mackayite and blakeite.
Charming little crystal groups of brazilianite
from the Marcel Telirio mine near Linopolis, as well as very good single crystals, were being offered by various dealers.
For one thing, he offered about 12 miniature and small-cabinet specimens of brazilianite
from a brand-new occurrence, some 400 km north of the familiar ones in the Linopolis, Minas Gerais region.
There were 12 bicolored red/green scepter tourmaline crystals of highest quality; brazilianite
matrix specimens 30 cm wide; superbly crystallized rose quartz clusters with childrenite rosettes; doubly terminated herderite crystals more than 10 cm long, on matrix; morganite crystals with phantoms; euclase crystals to 6 cm, the smaller ones richly colored.