FELSITE
\fˈɛlsa͡ɪt], \fˈɛlsaɪt], \f_ˈɛ_l_s_aɪ_t]\
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A finegrained rock, flintlike in fracture, consisting essentially of orthoclase feldspar with occasional grains of quartz.
By Oddity Software
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A finegrained rock, flintlike in fracture, consisting essentially of orthoclase feldspar with occasional grains of quartz.
By Noah Webster.