OPALISED WOOD POLISHED
A striking Australian Opalised Wood Polished. This is a full slice end of the tree featuring defined areas. This slice end is polished on one side to make a great display piece for the home. The back of the wood slice end remains natural and unpolished. Petrified wood is extremely hard and dense, hence the weight. It is always surprising to pick these us and see how heavy they are. Now you can add to your existing petrified wood or fossils collection with this great Aussie piece. An ancient treasure.
Springsure, Queensland, Australia.
12.5cm x 9.5cm x 6cm, 809g.
Petrified wood is a fossil. Then groundwater rich in dissolved solids flows through the sediment, replacing the original plant material with silica, calcite, pyrite, or another inorganic material such as opal. The result is a fossil of the original woody material that often exhibits preserved details of the bark, wood, and cellular structures. Petrified wood from Queensland is prized for it’s excellent quality and beauty.
SiO2 · nH2O
Hydrated Silicon Dioxide.
Boulder Opal is a variety of Precious Opal found in Queensland, Australia, as cracks or coatings in and around ironstone sandstone boulders. Opal has been a popular gem for many centuries and has a very interesting structure. The name opal probably is derived from the Sanskrit name for precious stone upala. Opal is considered as mineraloid because the structure is not truly crystalline. The chemistry of Opal is primarily SiO2 and varying amounts of water. The amount of water varies from 5 to 10% and greater. This water can help geologists determine the temperature of the host rock at the time the opal formed.