Marble is formed through the metamorphism of limestone, and/or dolomite.
magma
Moqui marbles are neat little concretions formed in sedimentary rock. Hematite cements the granules together into a hardened spherical mass, then erosion removes the surrounding sandstone.
i don't actually know. i' not the person who built it so yea.
Take a look at the related link I have included below. It is very informative and explains how marble rock is formed and what it comprises of.
the devils marbles were formed 50 million years ago
He will have 13 blue marbles and 10 green marbles.
10 Green marbles, 13 Blue marbles.
He has 10 green marbles.
There could be 12 white marbles and 16 red marbles
at least 39 blue marbles
8:6
12 blue marbles
24 red marbles