Description
Petrified wood, also known as petrified wood, is a type of fossil: it consists of fossilized wood in which all organic materials have been replaced by minerals (usually silicates, such as quartz), while retaining the wood's structure. The process of petrification occurs underground, when a tree is buried under sediment, and can take millions of years. Groundwater slowly seeping through the soil deposits minerals where the lignin and cellulose rot away. If the deposition and rotting occur at the same rate, the shape of the cells is preserved. The smallest details can be immortalized. Petrified annual rings and various tissues can be traced down to a microscopic level. Petrified wood has a hardness of 7 on the Mohs scale of hardness, the same as quartz. The petrification process has now been reduced to a few days in a laboratory. Petrified wood occurs in a wide spectrum of colors due to variations in the deposits of minerals such as manganese, iron, and copper. Quartz is colorless, but when iron is added, crystals with a red or yellow tinge are formed, as shown in the list below: Carbon – black Cobalt – green/blue Chromium – green/blue Copper – green/blue Iron oxides – red, brown, yellow Manganese – pink/orange Manganese oxides – black Silica – white, gray. Localities: Argentina: The Petrified Forest National Monument in Santa Cruz, Argentina is considered one of the world’s best-preserved petrified forests; many petrified trees in Patagonia have a diameter of over 3 meters and are over 30 meters tall. Belgium: The Goudberg geosite near Hoegaarden *Greece: The Petrified Forest at Sigri on the western tip of the island of Lesbos is probably the largest petrified forest, over 150 km². There are trunks up to 22 meters long. Large trees, complete with their roots, still stand upright. It has been a protected natural monument since 1985. *Kerguelen: Remains of petrified forests dating back ninety million years have been found on the French islands. *Namibia: The petrified trees near Khorixas were likely transported as logs by rivers from the north to Namibia. Some recognizable trunks are 30 meters long. *Austria: Remains of a petrified forest are located near Laas in the state of Carinthia. *Czech Republic: The largest stone is located in the Nová Paka museum village and is 8.20 meters long. *United States: The largest specimens in the country reach approximately 1.8 meters in diameter and are therefore significantly smaller than those in South America. A famous park is the Petrified Forest National Park in Arizona.
The most beautiful minerals, fossils, and gemstones from Madagascar.
Madagascar, officially the Republic of Madagascar and formerly known as the Malagasy Republic, is an island in the Indian Ocean, off the southeastern coast of Africa. The nation consists of the island of Madagascar (the fourth largest island in the world) and numerous smaller peripheral islands. It is a famous place for diving and swimming and is renowned for its high-quality gemstones mined from the soil and rocks. We at Timmersgems can proudly say that we are the second-largest importer of Malagasy gemstones in Europe, just behind a French company. Every year, we have at least 3 large containers filled with the most beautiful gemstones, minerals, and buffalo horns. If you take a look at our webshop and showroom, you will find a wide range of Labradorite, Amethyst, Citrine, Rose Quartz, and many, many other varieties. We do business with 17 small family businesses on the island. In this way, we can guarantee that you will find the best and most beautiful gemstones and minerals. We have also been supporting these families since the beginning of our company 35 years ago. We have lost our hearts to the island, the people, and the products. Every year, it is a wonderful experience to visit the island and find the best stones and minerals for you. Madagascar's natural resources encompass a range of unprocessed agricultural products and minerals, including raffia, fisheries, and forestry, and are a mainstay of the economy. Madagascar is one of the world's leading suppliers of vanilla, cloves, and ylang-ylang. Other important agricultural resources include coffee, lychees, and shrimp. Important mineral resources include various types of gemstones and semi-precious stones, and Madagascar currently provides half of the world's supply of sapphires, which were discovered near Ilakaka in the late 1990s. The island also holds one of the largest reserves of ilmenite (titanium ore), as well as significant reserves of chromite, coal, iron, cobalt, copper, and nickel. A number of major projects are underway in the mining, oil, and gas sectors, and these are expected to provide a significant boost to the Malagasy economy. These include projects such as the ilmenite and zircon mining of heavy mineral sands near Tolanaro by Rio Tinto. Madagascar is a very poor country with abundant flora and fauna. On Madagascar, you can encounter 400 plants and animals that cannot be found ANYWHERE ELSE IN THE WORLD. The minerals blue celestite, labradorite, and polychrome and ocean jasper are also found only on Madagascar.
