Aenigmatite

Aenigmatite, also known as cossyrite after Cossyra, the ancient name of

Aenigmatite is primarily found in peralkaline volcanic rocks, pegmatites, and granites as well as silica-poor intrusive rocks. It was first described by August Breithaupt in 1865 for an occurrence in the Ilimaussaq intrusive complex of southwest Greenland. Its name comes from αίνιγμα, the Greek word for "riddle".

It was also reported from the

• Narsaarsuk and elsewhere in Greenland.
• The
  Khibiny and Lovozero alkaline massifs on Kola Peninsula, Russia
  .
• The
  Yenisei Range, Krasnoyarsk Krai, Russia
  .
• The volcanic island of Pantelleria, Italy.
• In the United States, from
  Little Rock, Pulaski County, Arkansas, and Santa Rosa, Sonoma County, California
  .
• In Australia, from Warrumbungle volcano, Nandewar volcano, and the Mount Warning complex, New South Wales; and the Peak Range Province, Queensland.
• In Canada, from
  Rainbow Range
  shield complexes.
• From Logan Point quarry, Dunedin Volcano, New Zealand.

See also

• List of minerals

References