Diopside

Pale yellow grains of norbergite and white to pale gray grains of diopside, both common, in marble matrix, with small, scattered grains of violet fluorite, graphite, and pyrite. The diopside is nearly the same color as the matrix rock, so it is inconspicuous in daylight, but its SW blue fluorescence reveals its abundance (see photo DPS18b). The norbergite fluoresces its customary yellow color SW. This specimen was purchased during the early 2000s by Richard Bostwick from Lenny Lee at one of the local mineral shows and later, in 2007, was exhibited in the large fluorescent tent at the Springfield, Massachusetts show. In 2023 it became specimen FMM-3150 of the Franklin Mineral Museum through purchase of a large part of the Bostwick collection.

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