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Floatation Test

Organic Material

NaCl (Probably)

Iron Sulfide (FeS) (possible)

CO2 Evolves

FeCO3 (magnetic)

Acid turns to green or yellow

Fe2(CO3)3 (iron(III) carbonate)

Acid turn green or yellow

CaCO3 (calcium carbonate) MgCO3 (magnesium carbonate) Ca(SO4)2 (calcium sulfate)

Slow Solubility

Soluble in hot HCl

Fe2O3 (Iron Oxide)

Attracted to magnet?

Fe3O4 (magnetite)

Soluble in Chelating Agent (EDTA)

SrSO4 (strontium sulfate)

BaSO4 (barium sulfate - barite)