felsitic


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fel·site

 (fĕl′sīt′)
n.
A fine-grained, light-colored igneous rock, composed chiefly of feldspar and quartz.
[fels(par) + -ite.]
fel·sit′ic (-sĭt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Minor grain types include chalcedonic microcrystalline quartz of indeterminate origin but possibly from amygdules in volcanic rock, polycrystalline microlitic and felsitic volcanic rock fragments (in addition to more abundant glassy volcanic rock fragments), equant opaque iron oxide grains that are probably magnetite, internally foliated fragments of metamorphic slate, and rare aggregate epidote grains.
Mask Cave: red-slipped pottery and the Australian-Papuan settlement of Zenadh Kes (Torres Strait)
The property is underlain by a northeast striking belt of basic intrusive and extrusive rocks intercalated with metasedimentary rocks and intruded by quartz feldspar porphyry and felsitic rocks.
Seabee gold project

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