I have come across some older "papers" hidden in the deep recesses of my lab/office. The first was an assignment/report I prepared for a course in geochemistry about 40 years ago! I believe the text editor was Multimate on an IBM 5150 (could have been a 286/5160)!!
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I am a bit sad about the other two. Originally a single manuscript that was split into two separate papers to cut down on the overall individual page count. I remember struggling to write final drafts that I felt worthy of being submitted for possible publication but, then, life/career kept moving ahead and my ability to edit further behind. The names of the co-authors have been removed because the below drafts were never submitted for their approval. The manuscripts were prepared about 30-35 years ago.
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Reliability of Mineral-Liquid Partition Coefficients
A Geochemical Model for the Origin of the Archean Tonalite-Trondhjemite-Granodiorite Series