How Agates are created…
Agates develop as secondary deposits in hollow cavities, called vesicles. Although they can form in all types of host rock, most of the world’s agates developed in ancient volcanic lava. When the continents were first forming, layers of molten lava pushed toward the earth’s surface through rift zone cracks, volcanoes, and other geologic events.
pictures courtesy of RockOn Omaha
Agate Geode Sphere
Polished Agate Slice
Petrified Wood is created by…
Petrified Wood is a fossil in which the organic remains have been replaced by minerals in the slow process of turning to stone. This petrification process generally results in a Quartz Chalcedony mineralization. Special rare conditions must be met in order for the fallen wood to be transformed into precious Fossil Wood or Petrified Wood. In general, the fallen trees get buried in an environment free of oxygen (anaerobic environment), which preserves the original tree structure and general appearance. The other conditions include a regular access to mineral rich water flowing through the wood, replacing the organic tree structure with inorganic stone. The end result is Petrified Wood, a tree, with its original basic structure in place, replaced by stone.
Elements such as manganese, iron, and copper in the water/mud during the petrification process give petrified wood a variety of color ranges. Pure quartz crystals are colorless, but when contaminants are added to the process the crystals take on a yellow, red, or another tint.
Following is a list of contaminating elements and related color hues:
carbon – black
cobalt – green/blue
chromium – green/blue
copper – green/blue
iron oxides – red, brown, and yellow
manganese – pink/orange
manganese oxides – blackish/yellow
photo’s courtesy of RockOn Omaha
Fern Tietea Singularis from Brazil
Petrified Wood from Madagascar
Petrified Wood Rainbow from Arizona
Petrified Wood from Indonesia
Malachite is known as the stone of Transformation.
Malachite is believed to bring about Insightfulness, Friendship and Emotional Healing.
It clears and activates all Chakras – Especially the Heart and Throat Chakras.
Malachite is an extremely powerful metaphysical stone, and is used for deep energy cleaning, bringing healing and positive transformation to the wearer.
(Pictures Courtesy of RockOn Omaha)