3" Las Choyas Geode With Quartz & Chalcedony

This is a beautiful, cracked "coconut geode" from Las Choyas Mexico. It's full of glimmering, quartz, calcite and blue chalcedony/agate . Both halves which fit together nicely are included along with a pair of acrylic display stands.

Geodes are rounded, hollow voids in rocks filled with crystals and other minerals. They are typically formed when air bubbles inside of volcanic rock form hollow cavities. Over time, as mineral-rich water seeps into the rock it beings to deposit tiny crystals on the sides the hollow cavity. After millions of years, the flow of water gradually builds crystals inside the empty space.

Las Choyas geodes, often referred to as coconut geodes are mined from 100 to 200 feet below the surface near Chihuahua, Mexico. Shafts are drilled down to the geode bearing white clay, and then tunnels are dug horizontally to extract the geodes.

The geodes typically range from about 2-6 inches in diameter and can contain a variety of minerals and crystals. Most hollow geodes contain a variety of quartz ranging from clear quartz to smoky quartz to more rarely amethyst. Many secondary minerals such a goethite, hematite, mordenite, calcite and galena may also be present in some geodes.
DETAILS
SPECIES
Quartz
LOCATION
Las Choyas, Chihuahua, Mexico
SIZE
3" wide
CATEGORY
SUB CATEGORY
ITEM
#36221