203 results for arizona

Malachite, a beautifully patterned green mineral, is a copper carbonate or a copper ore. It has a hardness between 3.5 and 4. Malachite crystallizes in the monoclinic crystal system, and most often...

If you are even remotely interested in collecting rocks and minerals, you have probably heard about the Tucson Gem, Mineral and Fossil Show.   Held every year for the last 60 years in beautiful Tucson

Origin of Names for Rocks and Minerals How do rocks and minerals get their names? Rock and Mineral names can be traced quite often to Greek and to Latin. It is common practice to add an "ite" to...

Ways that mining is done to extract rocks from the earth.    When you hear prospector what do you envision? The old man with the long gray beard, leading his pack mule and collecting...

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...

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

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)...

Another type of “damage” seen in Petrified Wood is from insects. Though origin and evolutionary history of this is poorly understood to date, as the fossil record is scarce, evidence for herbivory ins

Fossils are a record of a past life. They are the remains of plants and animals that lived millions of years ago. A fossil can be a part of the animal; such as the shell or bone. It can be an egg,...

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

Peru is one of the leading producers of copper, gold, lead and silver. Today, Peru is the largest gold producer in Latin America, and