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Rubidium in alkali feldspar perthites

Ronald B. Parker, John S. King and Ronald G. Worl
Rubidium in alkali feldspar perthites
Contributions to Geology (1963) 2 (1): 59-61


Twenty-eight alkali feldspar perthites were analyzed for Rb content by X-ray emission spectrography, and the microcline/plagioclase ratios determined by X-ray diffraction. Pink perthites range from 78-82 weight % microcline and contain up to 0.31 weight % Rb. White perthites range from 73-94 weight % microcline and contain up to 0.18 weight % Rb. Green perthites show the greatest range in microcline content, from 70-100 weight %, and show a systematic relationship among color intensity, microcline percentage, and Rb content. Rb content of green microcline ranges from 0.06 - 1.00 weight % and is highest in dark green, microcline-rich samples.

ISSN: 0010-7980
Serial Title: Contributions to Geology
Serial Volume: 2
Serial Issue: 1
Title: Rubidium in alkali feldspar perthites
Pages: 59-61
Published: 1963
Text Language: English
Publisher: University of Wyoming, Laramie, WY, United States
Accession Number: 1963-008421
Categories: Mineralogy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus., table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1963
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