Books  Physical Sciences  Earth & Planetary Sciences  Mineralogy & Crystallography 

Montana Sapphires

Out of Print

By: M O'Donoghue

208 pages, Illus

Chapman & Hall

Hardback | #44911 | ISBN-13: 9780412987618
Out of Print Details


The geology and mineralogy of sapphires. Sapphires from hard rock deposits - the Yogo Gulch deposit. The Yogo deposit from early reports. Interlude-Streeter, a London sapphire entrepreneur. Yogo in the post-war years. Sapphires from gravel deposits. Dry Cottonwood Creek. Rock Creek. The colour of sapphires. Altering the colour of sapphires. The colour of Rock Creek sapphires. The colour of dry Cottonwood Creek sapphires. Diffusing colour into sapphires. Heat equipment. Sapphires in commerce. Stop press.

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