Glossary
Magnesium carbonate
The chalk mineral, MgCO₃, used because it absorbs moisture from skin.
As an Amazon Associate I earn from qualifying purchases.
Sports chalk is magnesium carbonate. On a label you may see MgCO₃. It is a white powder that picks up moisture, which is why a dusty hand grips a dry bar or a dry hold better than a sweaty one.
Liquid chalk, block chalk, and loose chalk are different packages of the same mineral, plus whatever else the maker adds. A product that does not name magnesium carbonate may still be sold as "liquid chalk." If the ingredient list is missing, you cannot tell from the title alone.
Competition rules that mention chalk usually mean this mineral. They do not always mention the bottle. See the weightlifting and climbing pages before you assume a liquid is legal in a meet.
Black Diamond White Gold loose chalk
Loose chalk. The title says 100% magnesium carbonate, in a loose or refillable format.
This is powder. Gyms that ban dry chalk are talking about this category. It is the comparison piece next to a liquid bottle, not a liquid itself.
Check price on Amazon