59 results for igneous

Rocks are formed in 3 ways-sedimentary, igneous and metamorphic. But did you know there are actual fields of scientific study who specialize in exploring, studying and understanding each of these for ...

In Part 1 of my All About Macrocrystalline Quartz series we discussed the basics of Macrocrystalline Quartz: science, nomenclature, varieties, and uses. In Part 2 we discussed Quartz crysta ...

Quartz has long been the subject of spiritual beliefs and folklore. We were fortunate enough recently in acquiring a large stock of various Quartzes from several locations and have spent time explori ...

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 Appal ...

  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 ...

Wisconsin is one of the best states in the U.S. for finding a rocks, crystals and minerals. Wisconsin is a rolling plain laid down on sedimentary rocks and broken in places by uplifted igneous and m ...

Oklahoma has only a limited variety of rocks and minerals, mostly agate and petrified wood. However, Oklahoma is rich in commodity minerals throughout the state. These natural minerals, which includ ...

  Michigan has 1,853 records of mining mines according to the U.S.G.S. Lower Michigan is quite level and not much elevated above the Great Lakes, and is underlain by sedimentary deposits of li ...

Maine is an excellent state for rock and mineral collecting! The northern part of Maine is hilly and often swampy, the southern part is rolling uplands broken by hills, isolated mountains and valley ...

Texas produces a large variety of gemstones, rocks, minerals and fossils. Sandy sediments typical of the coastal plain make up southeastern Texas. Behind this lies the Llano uplift of central Texas ...

After Quartz, Calcite is the most next common mineral on the face of the Earth. Calcite comprises about 4% by weight of the Earth's crust. It is found throughout the world in sedimentary, metamo ...

Collectible rocks and minerals are found in every province and territory in Canada. Canada is the second largest country in the world. It is the world leader in the production of potash and ranks am ...