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Diminution in the industry of the ultra-violet rays from quartz-tube mercury lamps

Publisher: Elsevier Science
Year: 1912
Tongue: English
Weight: 126 KB
Volume: 173
Category: Article
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(12)91064-9

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Bull. 53o-K.)--Vanadium occurs at Placerville, Col., disseminated in a dull green sandstone along seams or in veins containing roscoelite, quartz, and pyrite. Carnotite appears as a lining on the joint surfaces. A sandstone of lighter green color owed its color to mariposite, a chromium mica. Near G