a mineral
what type of rock is agate
many of veritys
There are minerals like graphite that have the same chemical composition as diamond, and there are many gems that are simply quartz, like agate, but there are probably none that are similar to both diamond and agate.
Pumice is an extrusive igneous rock, not a mineral.
a mineral
Minnesota's state mineral is iron ore.
State Mineral: Coal State Rock: Agate State Gemstone: Freshwater Pearl
Depends on what you're looking for. South Dakota's state mineral is rose quartz the state gemstone is fairburn agate
Maryland has an Official Gem which is an agate called the Patixent River Stone but it has no Official Stone, Rock or Mineral.
Agate is a variety of silicon dioxide (SiO2); it is not a silicate.
what type of rock is agate
many of veritys
As of 2014, Maryland does not have an official state rock. However, the state does have the Patuxent river stone as the official gemstone of the state.
7.0 on Mohs' scale
Geodes are actually the result of the crystallisation of minerals in a void or cavity (also known as a vug) in a rock. They are not a type of rock themselves. They however can form in either igneous or sedimentary rocks.
A ROCK SHOP that sells minerals and crystals will often have agate in different forms,. One of the best in NYC is called ROCK STAR CRYSTALS in Manhattan. They have more AGATE in a variety of forms than any other store run NYC, including Agate Geodes, Agate Bookends, Agate Slices in various sizes, Agate Pyramids and Spheres, Agate Massage Wands, Agate Jewelry, and even Agate Windchimes. You might also find agate bookends and agate coasters at a home furnishing store, but it's uncommon.