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cobalt bloom

noun, Mineralogy
1.
erythrite (def 1)
Origin
1770-1780
1770-80
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cobalt bloom

cobalt bloom

noun
1.
another name for erythrite (sense 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for cobalt bloom

arsenate mineral in the vivianite group, hydrated cobalt arsenate [Co3(AsO4)28H2O]. Erythrite, which is used as a guide to the presence of cobalt-nickel-silver ores because of its crimson or peach-red colour, occurs as radiating crystals, concretions, or earthy masses in the oxidized zone of cobalt and nickel deposits. It forms a complete solid-solution series with annabergite, in which nickel replaces cobalt in the erythrite structure. As the nickel content increases, the colour lightens to white, gray, or pale green. Erythrite occurs in Schneeberg, Ger.; Allemont, France; Cornwall and Cumberland, Eng.; Chile; Morocco; and the southwestern United States. For detailed physical properties, see arsenate mineral (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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10
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