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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An orthorhombic mineral containing arsenic, calcium, chlorine, copper, hydrogen, oxygen, and sodium.

from The Century Dictionary and Cyclopedia

  • n. A hydrated arseniate of copper, cobalt, and nickel occurring in lavender-blue amorphous masses: found with cobalt ores in Saxony and elsewhere.


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