Editing Quartz (section)

=== Milky quartz ===
Milk quartz or milky quartz is the most common variety of crystalline quartz. The white color is caused by minute [[fluid inclusions]] of gas, liquid, or both, trapped during crystal formation,<ref>{{Cite book|url=https://books.google.com/books?id=KLSTDgAAQBAJ&pg=PA97|title=Gemstones: A Complete Color Reference for Precious and Semiprecious Stones of the World|last1=Hurrell|first1=Karen|last2=Johnson|first2=Mary L.|year=2016|publisher=Book Sales|isbn=978-0-7858-3498-4|page=97}}</ref> making it of little value for optical and quality gemstone applications.<ref>[http://www.galleries.com/minerals/silicate/milky_qu/milky_qu.htm Milky quartz at Mineral Galleries] {{Webarchive|url=https://web.archive.org/web/20081219020818/http://www.galleries.com/minerals/silicate/milky_qu/milky_qu.htm |date=19 December 2008 }}. Galleries.com. Retrieved 2013-03-07.</ref>