Tucson Gem & Mineral Show 2015
Fluorescent Minerals
Gypsum var. selenite in rose crystal formation, SW & LW UV.
This mineral also has a long-lasting phosphoresence.
Same under white light. 2"x2"x2" - longest crystal is 0.75".
From Red River floodway, Winnipeg, Manitoba, Canada.
Agrellite fluoresces bright lavender under shortwave UV. The green is possibly calcite (it is fluorescent light blue under LWUV) or a different uranium-activated fluorescent mineral.
Kipawa Complex, Villedieu Twp., Quebec, Canada. 4"x3"x1.5"
Under white light. The non-fluorescent red crystals are eudialyte, the black are aegirine.
Also non-fluorescent are these crocoite crystals from the Adelaide Mine in Tasmania, Australia. According to the pamphlet that came with the specimen, "the name crocoite is derived from krokos, the Greek for 'crocus' or 'saffron', due to its color." 3"x2.5"x2.5"
Close up of the crystals. FOV = 1"
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