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Document Type

Research

Abstract

Many of the igneous rocks of the Terlingua district in west Texas contain analcite as an important mineral. The analcite-bearing rocks generally are assemblages of andesine or labradorite, alkali feldspar, augite or aegirite-augite, olivine, iron ores, and analcite. Biotite is present in some types but absent in others. Important types are analcite syenogabbro, analcite trachybasalt porphyry, analcite trachycdolerite, and analcite syenite. Analcite was formed in these rocks through an extended period from late magmatic to definitely post magmatic stages. Reaction between the analcitic liquid and earlier formed minerals resulted in a series of reaction products including analcite aegirite-augite, serpentine, albite, and zeolites.

Publication Date

1939

Journal Title

Proceedings of the Iowa Academy of Science

Volume

46

Issue

1

First Page

252

Last Page

252

Copyright

© Copyright 1939 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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