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Optical Mineralogy has its roots in the early 19th century, when mineralogists began using optical instruments to study the properties of minerals. The field gained significant momentum in the late 19th and early 20th centuries, with the development of more sophisticated optical instruments and techniques. Paul F. Kerr, an American mineralogist, was a prominent figure in the field during the mid-20th century.

Paul F. Kerr’s " Optical Mineralogy " remains a fundamental textbook for identifying minerals via polarizing microscopy, offering detailed coverage of crystal optics, the optical indicatrix, and systematic mineral descriptions. The text is renowned for its practical application in thin-section analysis, bridging theoretical crystallography with hands-on geological identification techniques. For legal digital access, the Internet Archive provides borrowed scans of the classic editions, while academic repositories and used book vendors offer alternative acquisition routes. Share public link

Optical Mineralogy is a branch of mineralogy that deals with the study of minerals using optical techniques. Paul F. Kerr, a renowned American mineralogist, wrote an influential book on the subject, which has become a classic in the field. The book, likely titled "Optical Mineralogy" or "The Microscopic Identification of Minerals" (Kerr's most notable work), provides a detailed guide on the identification and characterization of minerals using optical properties.

He didn’t blink. “How’s the relief?” Optical Mineralogy Paul F Kerr.pdf

Paul F. Kerr’s influence extended beyond raw data; his writing style was tailored for the learner. Unlike some advanced treatises that assumed a prior background in optical physics, Optical Mineralogy was designed for the undergraduate geologist. He utilized clear diagrams to illustrate ray paths and crystal sections, visualizing phenomena that disappear the moment the microscope light is turned off.

Dr. Elara Vance pressed the heels of her hands into her tired eyes. The dual nicols of the petrographic microscope swam back into focus, revealing the thin section of lunar basalt. Under crossed polars, the plagioclase feldspar displayed its characteristic twinning—stripes of alternating black and gray, sharp as a zebra’s back. But something was wrong. An interstitial mineral, no more than a sliver, blazed with an interference color she didn’t recognize. Not the chalky gray of quartz, not the vibrant blue of hypersthene. It was the bruised purple of a sunset over a dead volcano.

The second half of the book is a systematic catalog of the optical properties of nearly every major mineral group. The text provides a structured layout of properties like refractive index, birefringence, and extinction angle for hundreds of species. Optical Mineralogy has its roots in the early

Covers the fundamental principles of light, including refraction, Snell's Law , and the nature of isotropic and anisotropic minerals.

Given that physical copies of Kerr’s Optical Mineralogy are rare (out of print and expensive on secondhand markets), many students search for a .

Suggestions for complementing this book

Optical Mineralogy - Kerr, Paul F.: 9780070342187 - Amazon UK

You might wonder why you shouldn't just use a modern text like Nesse (Introduction to Optical Mineralogy) or a mobile app.