Mineral fluorescence was first noticed in the zinc mines near Franklin, NJ where fluorescence was used to sort ore. It is the most complex, famous and prolific fluorescent mineral location in the world.
This hand specimen contains fluorescent:
quartz – yellow
calcite – blue
Not much quartz fluoresces. When it does, it usually contains trapped hydrocarbons which is probably the case here. The crystalline nature of these Warsaw formation geodes creates a nice sparkle to the fluorescence.
Talcville New York
These palm to hand sized specimens contain fluorescent:
tremolite – orange to yellow
aphophyllite/manganocummingtonite – red to pink
talc – blue
These are classic specimens with attractive textures in natural light. And an unusual combination of pinks, reds and oranges that combine and grade into each other producing a wide array of pastel fluorescent colors.