• Webster's Revised Unabridged Dictionary
    • n Andalusite (Min) A silicate of aluminium, occurring usually in thick rhombic prisms, nearly square, of a grayish or pale reddish tint. It was first discovered in Andalusia, Spain.
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Century Dictionary and Cyclopedia
    • n andalusite A mineral of a gray, green, bluish, flesh, or rose-red color, consisting of anhydrous silicate of aluminium, sometimes found crystallized in four-sided rhombic prisms. Its composition is the same as that of cyanite and fibrolite. It was first discovered in Andalusia. Chiastolite (which see), or macle, is an impure variety, showing a peculiar tessellated appearance in the cross-section.
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In literature:

The top of Kearsarge is composed of andalusite schist.
"The Bay State Monthly, Volume 3, No. 5" by Various
Younger felspars, as well as mica, are developed, and there arise also sillimanite, garnet, andalusite and many others.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6" by Various
Sillimanite and andalusite are not infrequent ingredients of gneiss, and their presence has been accounted for in more than one way.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2" by Various