43 results for colorado

Colorado, like most western states, has produced gold, copper, and silver. Gold was discovered in 1859 and the most productive gold mine in Colorado, the Cresson Mine, produced more than 258,000...

The annual Denver Gem Show is always held around the second week of September.   HISTORY OF THE DENVER GEM, ROCK, MINERAL AND FOSSIL SHOW In the 1950s, six different Denver area gem and mineral clubs

Rhodochrosite is a gorgeous gemmy pink stone mostly from Argentina. Rhodochrosite actually formed in the Inca silver mines after they were abandoned in the thirteenth century. These magnificent pink...

Dendritic Agates have very thin tree-like inclusions of iron, manganese, or other metallic oxides that grow in natural fractures. These inclusions called dendrites were named after the Greek word...

Sowbelly Amethyst Agate or Vein Amethyst Agate with Silver Dendrites A lovely material with the unfortunate name of Sowbelly Agate, but it is also known as Vein Amethyst or Amethyst Agate. Sowbelly...

For those interested in pursuing education and a career in mining. This may not be an exhaustive list and the information presented is taken directly off their websites, but may change at any time. I

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...

Lapis Lazuli (often just referred to as Lapis) is an opaque, bright blue stone consisting mainly of Diopside and Lazurite. Lapis often has gold flecks (Pyrite) or whiteish veins (Calcite)...

What is my state's official state rock, mineral, or fossil?   Alabama designated Hematite as the state mineral in 1967, Hematite as the state rock in 1969, and Star Blue Quartz as the state...

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 wood and

The Green River Fossil Formation is one of the best known and most prolific fossil locations in the U.S. About 55 million years ago, during the Eocene period, the Rocky Mountains were formed. At that

    We have spent many summers digging dinosaur