Editing Strontianite (section)

== Luminescence ==

Strontianite is almost always [[Fluorescence|fluorescent]].<ref name=Mindat/>  It fluoresces bright yellowish white under shortwave, mediumwave and longwave [[ultraviolet]] radiation.  If the luminescence persists after the ultraviolet source is switched off the sample is said to be [[Phosphorescence|phosphorescent]].  Most strontianite phosphoresces a strong, medium duration, yellowish white after exposure to all three wavelengths.<ref name=MinRec37>The Mineralogical Record (2006)  37-1:44</ref>  It is also fluorescent and phosphorescent in [[X-rays]] and [[Cathode ray|electron beams]].  All materials will glow red hot if they are heated to a high enough temperature (provided they do not decompose first); some materials become luminescent at much lower temperatures, and this is known as [[thermoluminescence]].  Strontianite is sometimes thermoluminescent.<ref name=Dana/><ref name=Mindat/><ref name=HOM/>