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Silures
Silurian
silurid
silva
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sillimanite
sil·li·man·ite [ sílləmə nt ]


noun 
Definition:
 
white or greenish-brown fibrous mineral: a white or greenish brown fibrous mineral consisting of aluminum silicate. Source: metamorphic rocks.
[Mid-19th century. After Benjamin Silliman (1779-1864), U.S. geologist]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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