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Learning Geology

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Pearl gemstone
What is Pearl Gemstone? A pearl is a hard object produced within the soft tissue (specifically the mantle) of a living shelled mollusk. Just like the shell of a clam, a pearl is composed of calcium carbonate in minute crystalline form, which has been deposi...
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Opal
What is Opal? Opal is a gem quality and one of the most spectacular gemstones. A single stone can flash every colour of the spectrum with an intensity and quality of colour that can surpass the "fire" of diamond. The best opals can command prices per carat ...
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Mesothelioma
What is Mesothelioma? Mesothelioma is a type of cancer that develops from the thin layer of tissue that covers many of the internal organs (known as the mesothelium ). The most common area affected is the lining of the lungs and chest wall. Less commonly th...
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Giant's Causeway
What is Giant's Causeway? The Giant's Causeway is an area of about 40,000 interlocking basalt columns , the result of an ancient volcanic eruption. It is also known as Clochán an Aifir or Clochán na bhFomhórach in Irish and tha Giant's Causey in Ulster-Scot...
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Morganite
What is Morganite? Morganite is the pink to purplish-pink variety of Beryl . Beryl is best known for its gem varieties Emerald and Aquamarine , but other gem forms such as Morganite are also used. Morganite was first identified in 1910, and was named the fo...
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Malachite
What is Malachite? Malachite is a green copper carbonate hydroxide mineral with a chemical composition of Cu2(CO3)(OH)2. It was one of the first ores used to produce copper metal. It is of minor importance today as an ore of copper because it is usually fou...
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Orthoclase gemstone
What is Orthoclase gemstone? Orthoclase is a mineral that belongs to the family of silicate minerals called feldspar . The deference between the feldspars and the other silicates is that the former contain a mixture of the following chemical elements: Potas...
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Onyx
What is Onyx? Onyx is a banded variety of the oxide mineral chalcedony . Agate and onyx are both varieties of layered chalcedony that differ only in the form of the bands: agate has curved bands and onyx has parallel bands. The colours of its bands range fr...
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P'u'u O'o Crater, Hawai'i, 2005
Video Credits:  Th. Böckel Puʻu ʻŌʻō (often written Puu Oo) is a volcanic cone in the eastern rift zone of the Kīlauea volcano of the Hawaiian Islands. Puʻu ʻŌʻō has been erupting continuously since January 3, 1983, making it the longest-lived rift-zone eru...
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Fingal's Cave
What is Fingal's Cave? Fingal's Cave is a sea cave on the uninhabited island of Staffa , in the Inner Hebrides of Scotland, known for its natural acoustics. The National Trust for Scotland owns the cave as part of a National Nature Reserve. It became known ...
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Moonstone
What is Moonstone? Moonstone is the most well-known gemstone of the feldspar group . Named for its glowing colour sheen that resembles the moonlight, Moonstone can belong to several different members of the feldspar group, especially Orthoclase and Oligocla...
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Larimar Gemstone
What is Larimar? Larimar is a blue variety of the mineral Pectolite . Pectolite is not a rare mineral and is found throughout the world, but the exquisite sea-blue colour exhibited in the Larimar variety is very unique, and only comes from one place in the ...
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This is a page where you learn about geology.
Introduction
Geology deals in everything our planet has, starting from billion years from birth till date. Knowledge of Earth keeps the understanding of Earth processes, developing the history and Events.