is a manganoan variety of Muscovite that was originally described in 1865 by J.F.H. Breithaupt
who also named the mineral. The name Alurgite is from the Greek
word halourges meaning
genuine purple dye from the sea in allusion to
its typical reddish-purple color. In ancient Greece
Murex shells from the sea were used to produce a purple dye called
was the most expensive dye known in antiquity.
is a reddish-purple variety of Muscovite that
gets its color from the presence of manganese in its
chemical formula. A green variety of Muscovite
also exists that is called Fuchsite and is colored by the
presence of chromium.
W. T. Schaller (1959) placed Alurgite as an intermediate between Leucophyllite
(now a synonym of Aluminoceladonite) and Muscovite.
cabochon gems are uncommon but beautiful with the reddish-purple
color against a dark background of black Braunite.
Ouro Preto, Minas Gerais, Brazil; Prabornaz Mine, Saint-Marcel, Aosta Valley, Italy;
Tone mine, Kinkai-Tone-machi, Nagasaki City, Nagasaki Prefecture, Kyushu Region, Japan.