Lot of 10 Carnegie Geophysical Lab Geological Papers 1920s–30s Mineral Science

Lot of 10 Original Geology & Mineralogy Papers – 1920s & 1930s

Offprints from:
• Geophysical Laboratory – Carnegie Institution of Washington
• Yale University Geological Department
• Printed in The American Journal of Science (multiple vols.)

These are original early-20th-century academic publications – not modern reprints – covering crystallography, mineral formation, earth age studies, powder spectrum testing, and Pacific Coast stratigraphy.

Ideal for:
• University libraries • geology research • mining history • academic décor • collectors

Includes topics such as:
– Crystal Structure of Covellite
– High-Temp Modification of Quartz (β-Quartz)
– Earth Age by Sodium Accumulation
– Mesozoic Stratigraphy – Pacific Coast
– Powder Spectrum Standards (NiO & CdO)
– Compliments-of-Author signed copies

Condition
Vintage academic paper – 80–100 years old – age wear, minor tears, aging, hole-punch, some library markings – overall legible & intact.

Rare group – uncommon to find in a full