170 results for iron

The colors in Petrified Wood come from minerals present during formation.  Petrified Wood may retain the details of the original wood, but often the bright colors are not common in the actual wo ...

Tiger Iron consists of Red Jasper, Hematite, and Tiger eye. It is a great example of a metamorphosed gemstone: More than 2 billion years ago, deposits of these three materials were slowly mashed t ...

Fire Agate has such small layers that light entering them forms interference colors known as "fire." It is thought to be formed when hot water saturated with silica and iron oxide invaded cavities ...

  Minnesota contains some of the oldest rocks on Earth. It has granitic gneisses that formed some 3,600 million years ago. Southern Minnesota rises from the midwestern prairies into a rolling ...

Snakeskin Jasper is a semiprecious gemstone material from Australia.  It is found in Turee Creek Station in the Phibara region of western Australia. It is red, orangey red and white ba ...

Not all of New York is equally endowed with gem grade rocks and minerals. But mining occurs in every county in New York State except Bronx, Kings, New York, Queens and Richmond. More than half of N ...

Brazil is of huge importance in the world of rocks and minerals. In fact, Brazil is the world’s fifth largest mineral producer. Brazil is the world's largest producer (22% of world productio ...

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 ...

  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 count ...

Plume Agates are clear or milky with three-dimensional plant, or flower-like plumes floating in them. Plumes are different than dendrites, which are usually more branch-like or thin, or moss which ...

Pyrite is the classic "Fool's Gold". There are other shiny brassy yellow minerals, but Pyrite is by far the most common and the most often mistaken for gold. Whether it is the golden look or so ...

Tennessee has more mineral resources than any other state east of the Mississippi, except North Carolina. Limestone and dolomite, bituminous coal, lead, zinc, ball clay, sand and gravel, phosphate, ...