I thought marbles were made of glass. But try Agate, a silica mineral.
Agate :D
quartz
limestone and pentelic marbles
They can be used to make glass.
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.
There could be several rocks used in the making of glass, but the main constituent material used in making glass is quartz. The rock which is used most for supplying the quartz used in glass making is sandstone.
Quartz is a highly abundant material and has been used in a plenty of applications. Powdered quartz is used in making porcelain, scouring soaps, sandpaper, and wood fillers. Because it is a primary ingredient in sand it is also used to make glass & labware, silica brick, cement, and mortar. Ground quartz is used as an abrasive in stonecutting, sandblasting, and glass grinding. We are the leading Quartz Powder manufacturers in india.
Marbles are generally made from recycled glass. However they are occasionally made of plastic. (These are mostly used in board games and such). Mike
Usually sandstone is used to supply quartz for making glass.
Usually sandstone is used to supply quartz for making glass.
Marbles are named because of their function and not what they are made of. Marbles can be make from any substance that holds a spherical shape.Now, and historically, marbles have been made of Glass, Ceramic and stone etc.The most common substances used are the ones which have useful weight.
yes, quartz is used in watches and the quartz watches are known as best watches in the world