70 results for Rhyolite

The best picture jaspers in the world come from the Oregon-Idaho border. Jasper is a member of the chalcedony family.Chalcedony, pronounced kal sid nee, is any form of microcrystalline quar ...

Rhyolite is an extrusive igneous rock formed as a deposit of volcanic ash. The ash becomes rock after being exposed to extreme heat and pressure. Iron oxide stains create the beautiful patterns. R ...

Leopard Skin Jasper is named for its lovely and colorful pattern. It is an orbicular jasper with mottled reds, pinks, yellows, and browns and resembles the fur of a leopard. Though called a jaspe ...

Kabamba Jasper is a lovely green orbicular jasper from Madagascar.  Kabamba Jasper is green orbicular rock from the South Africa Rift on the west side of the island of Madagascar. This semi ...

Snowflake Obsidian is a black obsidian with whitish-gray spots of radiating needle-shaped cristobalite crystals. A lot of Snowflake Obsidian is from Millard County, Utah. Approximately 2 ...

Ocean Jasper is from a silicified rhyolite ash flow off the northwest coast of Madagascar, near the village of Marovato.  It was discovered around 2000 and was vary plentiful at first. Ocean ...

Bruneau Jasper is a beautiful semi precious gemstone that comes from the remote canyon near the Bruneau River in western Idaho, about 30 miles south of the tiny town of Bruneau. It is a remote an ...

Willow Creek Jasper is a well known semi precious gemstone material that comes from about 15 miles north of Eagle, Idaho, which is northeast of Boise. The mine has been producing material for ...

Lots of beautiful rocks and minerals come from the state of Utah. Utah covers 54.4 million acres, of which 35 million are owned by the federal government. There are five National Parks and six Nat ...

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

  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 ...

New Mexico is one of the richest states for finding rocks and minerals. Varieties of agate, jasper, chert, or petrified wood are found in 15 of New Mexico's 32 counties. The New Mexico state gems ...