Is there anyway to destinguish between white kaolin and calcium carbonate?

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Asoori Latha

Calcium carbonate is odourless, it reacts with acid, putting some drops of Hydro Chloric acid on the powder will give effervesces and it is Insoluble in water and ethanol.

Kaolinite has a smell of clay

you add water it becomes plastic.

Ian J Slipper

Use dilute (up to 10%) hydrochloric acid, calcite will fizz and produce bubbles, kaolinite will not react with HCl.