Is Calcium Carbonate Vegan?

Answer: Maybe

It is a common substance found as rock in all parts of the world but is also the main component of seashells and the shell of snails. Calcium carbonate is found naturally as the following minerals and rocks: Aragonite, Calcite, … Fun fact: it’s usually the principal cause of hard water.

From the isitvegan.com archives. Thanks to Dan Linehan.

2 comments for “Is Calcium Carbonate Vegan?

  1. Mary Grey
    September 7, 2015 at 9:31 am

    But is it Vegan ?

  2. March 27, 2016 at 1:57 pm

    I’m trying to find that out too. I emailed the company Silk to find out if the calcium carbonate they use in their soy milk is biological (not vegan) or geological (vegan). Anyone out there know? Haven’t heard back from Silk yet.

Leave a Reply