Feature
Gems & Gemology, Winter 1998, Volume 34, No. 4
Barite Inclusions in Fluorite
John I. Koivula and Shane Elen
Hemispherical aggregates of the mineral barite were identified as inclusions in fluorite from Illinois. One of these inclusions showed a dramatic pseudo-color change because of its position in the host. The identification of these inclusions was made nondestructively using laser Raman microspectrometry.
