Thallium (Tl #81) is the next element on the periodic table for my APEX mineral collection.
Thallium Minerals - There are lots of Thallium minerals.
Thallium is primarily used in the electronics industry. Thallium Sulfide electrical conductivity changes with exposure to infrared light therefore making this compound useful in photoresistors.
Thallium does NOT make a good name for a perfume.