188 results for calcite

North Dakota has lots of oil, gas, sand, coal and other natural resources. North Dakota is in the U.S. region known as the Great Plains. Eastern North Dakota lies in the level bed of the ancient...

  Hematite is a silvery, shiny opaque black stone that almost looks like metal. It is a common iron ore. In fact Hematite is the source for a large percentage of the iron mined in this...

Once again, I would like to explain that, though we have been in the rock and mineral business for 40 plus years, Petrified Wood is not our specialty. However, recently we bought a HUGE collection and

Pennsylvania is not rich in rocks and minerals, and not very great for rockhounding.  There are very limited public lands, and much of it is hunting grounds. Pennsylvania does not have an...

Though Alabama isn’t really known for its rocks, it actually is rich in pretty rocks!  About 190 different minerals have been found in Alabama. The southern half of Alabama is a coastal plain...

Vermont is known for its marble, serpentine, and other metamorphic rocks. Much of the area of Vermont is broken up by the Green Mountains and, parallel with them in the west, the Taconic Mountains...

Florida is not really known for good cutting or lapidary material. But Florida does have some cool rocks and minerals. Primarily Florida is covered with sedimentary rocks: limestone or calcite and...

Illinois is not known for producing many gemstones or minerals. But Illinois was the leading producer of fluorite in the United States for many years, and the mineral was named the official state...

  Missouri's major mineral resources include lead ore, iron ore, zinc, barite, and limestone. Galena was named the official state mineral of Missouri in 1967. Galena is a major source of lead...

Limb cast are some of the most beautiful “Petrified Wood” around.  But what is a limb cast? Limb cast begin the same way that Petrified Wood does, trees are buried quickly under several hundred yards

New Jersey's has a rich mining history. The northwest corner of New Jersey contains the famous Delaware Water Gap, where the Delaware River has cut through the Kittatinny mountain range of the...