Orthocumulate | Article about orthocumulate by The Free Dictionary
A cumulate composed chiefly of one or more cumulus minerals plus the crystallization products of the intercumulus liquid.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Massive and mottled rocks may show adcumulate (~93-100% cumulus phase), mesocumulate (~85-93%), or orthocumulate
(~75-85%) texture, with mottled rocks comprising two or more textures in close association (cm- to m-scale).
These interstitial areas are interpreted as having crystallized as an orthocumulate
liquid trapped by the settling and accumulation of the kaersutite and magnetite megacrysts in a magma chamber at depth.