aphanite


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aph·a·nite

 (ăf′ə-nīt′)
n.
A dense, homogeneous rock with constituents so fine that they cannot be seen by the naked eye.
[From Greek aphanēs, unseen : a-, not; see a-1 + phainesthai, phan-, to appear, passive of phainein, to show; see phenomenon.]
aph′a·nit′ic (-nĭt′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.

aphanite

(ˈæfəˌnaɪt)
n
(Geological Science) any fine-grained rock, such as a basalt, containing minerals that cannot be distinguished with the naked eye
[C19: from Greek aphanēs invisible]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aphanite - fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye
rock, stone - material consisting of the aggregate of minerals like those making up the Earth's crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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Lithic grains were made up mainly by eruptive rock, quartzite, phyllite, and dolomite, and to a lesser degree from slate, aphanite, schist and metasandstone, and a small amount of limestone, high grain rock.
Diagenetic controls on reservoir quality of tight sandstone: A case study of the Upper Triassic Yanchang formation Chang 7 sandstones, Ordos Basin, China/Controles diageneticos en yacimientos de arenisca compacta: estudio de caso de las areniscas Chang 7, en la Formacion Yanchang, Triasico Superior, cuenca de Ordos, China

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