ophite


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ophite

[′ä‚fīt]
(petrology)
A diabase in which the ophitic structure is retained even though the pyroxene is altered to uralite.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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He argues that this Ophite evidence is essential for understanding Sethianism, practiced by a pre-Christian Jewish group who considered themselves virtuous offspring of the Biblical Seth.
A few years later it was found in the Spanish province of Huesca, near a village named Caserras, where it occurred filling fractures in ophite, associated with scolecite and prehnite.
In 1982 Besteiro and Lago described specimens from a Pyrenees ophite. Occurrences are also noted at Saint-Pandelon, Landes, France; in Morocco at Ourika; and from the Gunsight Mountains in Arizona.
The Antequera occurrence described here consists of distinctive, fibrous masses on and in quartz crystals, and as sky-blue coatings to 3 mm thick on fracture surfaces in ophite. Small cavities in the rock may be filled by radial-fibrous aggregates.
A close relationship exists between the blue quartz and the ophite intrusions, which seem to be the preferred environment for aerinite formation.
Blue-quartz-bearing ophite occurrences range from lenticular or tabular mineralized ophite which is altered and fractured, to mineralized but unconnected "floater" blocks embedded in "chaotic masses" of gypsum.