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What is the only rock that humans can eat?

Question #8664. Asked by Jamie.
Last updated Oct 05 2016.

avatar
sue943
Answer has 18 votes
Currently Best Answer
sue943
23 year member
104 replies avatar

Answer has 18 votes.

Currently voted the best answer.
Humans can eat Salt (Sodium Chloride) and Chalk (otherwise known as Calcium carbonate)
Common salt is a mineral composed primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite.

link https://en.wikipedia.org/wiki/Salt

And yes, you can indeed eat chalk:

link http://www.huffingtonpost.com/the-daily-meal/5-things-you-didnt-know-y_b_5059429.html

Response last updated by Terry on Oct 05 2016.
Dec 11 2000, 8:56 PM
l3i7l
Answer has 4 votes
l3i7l
21 year member
266 replies

Answer has 4 votes.
Pass the SALT please.

Dec 11 2000, 11:24 PM
JSBach
Answer has 5 votes
JSBach
23 year member
187 replies

Answer has 5 votes.
Natural table salt (NaCl) as well as other types of soluble solids (MSG), but chalk as well (although not very good).

Dec 12 2000, 1:37 PM
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