Definition of allophane
: an amorphous translucent mineral of various colors often occurring in incrustations or stalactite forms and consisting of a hydrous aluminum silicate
Origin of allophane
Greek allophanēs appearing otherwise, from all- + phainesthai to appear, middle voice of phainein to show — more at fancy
First Known Use: circa 1821
Learn More about allophane
Britannica.com: Encyclopedia article about "allophane"
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