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" BB in forceps becomes brown and glassy but does not fuse. Colors flame green. "
Tables for the Determination of Minerals by Physical Properties ... - Page 97
by Albin Weisbach, Persifor Frazer - 1897 - 163 pages
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A Description of Minerals of Commercial Value: A Practical Reference-book ...

Daniel Moreau Barringer - Mineralogy - 1897 - 182 pages
...blue when cold. If iron is present specimen must be treated with tin before this effect is obtained. In forceps becomes brown and glassy, but does not fuse. Colors flame green. Moistened with HC1 the color is at first blue. With the fluxes gives yellowish-green beads when hot,...
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