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Journal Article

Geology of Honda District, Colombia Available to Purchase

John W. Butler, Jr.
Journal: AAPG Bulletin
Published: 01 May 1942
AAPG Bulletin (1942) 26 (5): 793–837.
DOI: https://doi.org/10.1306/3D93346C-16B1-11D7-8645000102C1865D
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Journal Article

Detrital dihexahedral crystals of quartz in a sediment in Upper Magdalena Valley of Colombia, South America Available to Purchase

John W. Butler, Jr.
Published: 01 February 1940
American Mineralogist (1940) 25 (2): 145–151.
View PDF for article title, Detrital dihexahedral crystals of quartz in a sediment in Upper Magdalena Valley of Colombia, South America
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Journal Article

Origin of the emery deposits Near Peekskill, New York Available to Purchase

John W. Butler, Jr.
Published: 01 September 1936
American Mineralogist (1936) 21 (9): 537–574.
View PDF for article title, Origin of the emery deposits Near Peekskill, New York
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