is an extremely rare collector's gem. It is a rare Phosphate
mineral that is relatively soft (4.5 - 5.0 Mohs hardness). Until a find
at White Mountain, Mono County, California, Augelite was
only known as very tiny crystals or masses.
This source is now depleted. The only current sources
for gem quality crystals are Rapid Creek, Dawson Mining District, Yukon Territory,
Canada; Ancash Department, Peru; Groton,
Grafton County, New Hampshire, USA. Even these sources only produce very small
crystals, most of which are highly included or opaque.
is found at the Västanå mine, near Näsum, Skåne,
and at Hålsjöberg, Värmland, Sweden. At Mbale, Uganda.
In the Buranga pegmatite, near Gatumba, Rwanda. In the
USA, large crystals from the Champion mine, White Mountains,
Mono County, California; in New Hampshire, at the Palermo
#1 mine, near North Groton, Grafton County, and the
G.E. Smith mine, Newport, Sullivan County; in the Hugo
and Ingersoll mines, near Keystone, Pennington County,
South Dakota; in the White Picacho district, Maricopa
and Yavapai Counties., Arizona. From the Big Fish River–Rapid
Creek area, Yukon Territory, Canada. In Bolivia, from
the Socavón mine, San José, and Itos mines, Oruro; at
Llallagua, Machacamarca, Tatasi, and Portugalete, Potosí.
From Mt. Perry, 75 km southwest of Bundaberg, Queensland,
Australia. Additional localities are known.