Milarite is a rare
beryl
Beryl ( ) is a mineral composed of beryllium aluminium silicate with the chemical formula Be3Al2Si6O18. Well-known varieties of beryl include emerald and aquamarine. Naturally occurring, hexagonal crystals of beryl can be up to several ...
. It is a member of the
osumilite group. Crystals of this mineral typically come in green or yellow. The mineral gets name after Val Milar.
Occurrence
The mineral can be found be found in countries like Switzerland, Brazil, Mexico, China, Namibia, and the United States.
It can be found in Alpine
fissures
A fissure is a long, narrow crack opening along the surface of Earth. The term is derived from the Latin word , which means 'cleft' or 'crack'. Fissures emerge in Earth's crust, on ice sheets and glaciers, and on volcanoes.
Ground fissure
A ...
.
the mineral also occurs in marble
xenolith
A xenolith ("foreign rock") is a rock fragment ( country rock) that becomes enveloped in a larger rock during the latter's development and solidification. In geology, the term ''xenolith'' is almost exclusively used to describe inclusions in ig ...
s.
References
Beryllium minerals
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