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Authigenic albite from the Lowville limestone at Bellefonte, Pennsylvania

Arthur Pharaoh Honess and Charles Davis Jeffries
Authigenic albite from the Lowville limestone at Bellefonte, Pennsylvania
Journal of Sedimentary Petrology (April 1940) 10 (1): 12-18


Insoluble residues, obtained from the Lowville limestone at Bellefonte, Pa., show appreciable quantities of authigenic albite of unusual purity. The mineral occurs as twinned idiomorphic crystals, the largest of which are about one-fourth millimeter along the major diameter. Inclusions of small rhombs and granules of calcite are commonly observed in the albite crystals. The authigenic character of the albite is suggested by the unusual chemical composition, idiomorphic habit, the dearth of associated clastic materials, and the manner of distribution in the limestone. The crystals do not appear to be confined to special horizons, nor are they related genetically to fracture zones which may be considered avenues of circulation for hydrothermal solutions. The enclosing rock shows no trace of metasomatic change or heat effects of any kind, nor do the crystals appear to show replacement features, but rather they suggest formation in the calcareous muds of the sea floor during deposition and compaction of the sediment. Complete chemical analyses of the feldspar collected at random from several different parts of the Lowville rock show no potash but an unusually high soda content.

ISSN: 0022-4472
Serial Title: Journal of Sedimentary Petrology
Serial Volume: 10
Serial Issue: 1
Title: Authigenic albite from the Lowville limestone at Bellefonte, Pennsylvania
Pages: 12-18
Published: 194004
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
Accession Number: 1949-007745
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N39°43'00" - N42°17'60", W80°31'60" - W74°40'00"
Source Note: Pa. State Coll. Mineral Indus. Expt. Sta. Tech. Paper 53, 1940.
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: 1949
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