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Calorimetric investigation of the excess entropy of mixing in analbite-sanidine solid solutions; lack of evidence for Na,K short-range order and implications for two-feldspar thermometry
H. T. Haselton, Guy L. Hovis, Bruce S. Hemingway and Richard A. Robie
Calorimetric investigation of the excess entropy of mixing in analbite-sanidine solid solutions; lack of evidence for Na,K short-range order and implications for two-feldspar thermometry
American Mineralogist (April 1983) 68 (3-4): 398-413
Calorimetric investigation of the excess entropy of mixing in analbite-sanidine solid solutions; lack of evidence for Na,K short-range order and implications for two-feldspar thermometry
American Mineralogist (April 1983) 68 (3-4): 398-413
Index Terms/Descriptors
- alkali feldspar
- alkali metals
- analbite
- calorimetry
- enthalpy
- entropy
- equations
- experimental studies
- feldspar group
- framework silicates
- geochemistry
- geologic thermometry
- heat capacity
- metals
- mineral data
- minerals
- mixing
- P-T conditions
- phase equilibria
- plagioclase
- potassium
- properties
- sanidine
- silicates
- sodium
- solid solution
- thermodynamic properties
Abstract
Heat capacities (5-380 K) measured for five highly disordered alkali feldspars. New data combined with recent data for plagioclase feldspars to derive an expression for the two-feldspar thermometer that is consistent with present knowledge of the thermodynamics of these solid solutions.--Modified journal abstract.
ISSN: 0003-004X
EISSN: 1945-3027
Coden: AMMIAY
Serial Title: American Mineralogist
Serial Volume: 68
Serial Issue: 3-4
Title: Calorimetric investigation of the excess entropy of mixing in analbite-sanidine solid solutions; lack of evidence for Na,K short-range order and implications for two-feldspar thermometry
Affiliation: U. S. Geol. Surv.,
Reston, VA,
United States
Pages: 398-413
Published: 198304
Text Language: English
Publisher: Mineralogical Society of America,
Washington, DC,
United States
References: 62
Accession Number: 1983-048696
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 13 tables
Secondary Affiliation: Lafayette Coll.,
USA,
United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1983
Program Name: USGSOPNon-USGS publications with USGS authors
