minerals
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minerals [2021/09/27 12:10] rapidplatypus [Princess Sodalite Mine] |
minerals [2021/09/27 12:12] rapidplatypus [Isua] |
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| ==== Uvarovite ==== | ==== Uvarovite ==== | ||
| - | Uvarovite is a mineral included in the garnet group. It is a chromium garnet, emerald green, or dark green. It is one of the rarest varieties of garnet. It was discovered in 1832 by Germain Henri Hess and named after Count Sergei Uvarov; the Russian president of the St. Petersburg Academy and minister of education. The mineral is prized by collectors and scientists. [([[https:// | + | Uvarovite is a mineral included in the garnet group. It is a chromium garnet |
| ==== Carat ==== | ==== Carat ==== | ||
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| ==== Isua ==== | ==== Isua ==== | ||
| - | Isua - a geological group located in southwest Greenland, containing the oldest occurrences of graphite formed from coal. At the same time, these are some of the oldest rocks on Earth. In the rocks of volcanic origin are the oldest preserved structures of pillow lava type. The age of the whole complex is 3.7-3.8 billion years. [([[https:// | + | Isua is a geological group located in southwest Greenland, containing the oldest occurrences of graphite formed from coal. At the same time, these are some of the oldest rocks on Earth. In the rocks of volcanic origin are the oldest preserved structures of pillow lava type. The age of the whole complex is 3.7-3.8 billion years. [([[https:// |
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minerals.txt · Last modified: 2022/10/03 06:40 by aga