Definify.com

Webster 1913 Edition


Sillimanite

Sil′li-man-ite

,
Noun.
[After Benjamin
Siliman
, an American meneralogist.]
(Min.)
Same as
Fibrolite
.

Webster 1828 Edition


Sillimanite

SIL'LIMANITE

,
Noun.
A mineral found at Saybrook in Connecticut, so named in honor of Prof, Silliman of Yale College. It occurs in long, slender, rhombic prisms, engaged in gneiss. Its color is dark gray and hair brown; luster shining upon the external planes, but brilliant and pseudometallic upon those produced by cleavage in a direction parallel with the longer diagonal of the prism. Hardness about the same with quartz. Specific gravity, 3.410.

Definition 2024


sillimanite

sillimanite

English

Sillimanite

Noun

sillimanite (countable and uncountable, plural sillimanites)

  1. (mineralogy) A fibrous neosilicate mineral, polymorphic with andalusite and kyanite, with the chemical formula Al2SiO5.

Synonyms

Translations

  1. Richard V. Gaines, H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig: Dana's new mineralogy, John Wiley & Sons, 1997