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Behaves simi- Gives the iron As in borax. Behaves as an
larly to the and sometimes
magnetic oxide.
manganese reaction.
oxide. With
nitre and carbonate of soda on platinum generally gives the manganese reaction.
In acid dissolves with effervescence.
Scorodite..... FeÄs+4H. Evolves water. Gives off water Emits arseni