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  2. Painite - Wikipedia

    en.wikipedia.org/wiki/Painite

    The mineral also contains trace amounts of chromium and vanadium, which are responsible for Painite's typically orange-red to brownish-red color, [2] [7] similar to topaz. The mineral's rarity is due to zirconium and boron rarely interacting with each other in nature. The crystals are naturally hexagonal, but may also be euhedral or ...

  3. Rare-earth mineral - Wikipedia

    en.wikipedia.org/wiki/Rare-earth_mineral

    This mineral is rare because it contains a large number of rare elements. [19] This mineral can be classified as semi-soluble salt due to its limited solubility in water and capacity to form ionic bonds. [19] Bastnäsite deposits are found in China and the USA. [19] Bastnäsite is a mineral that originates from Madagascar.

  4. Panguite - Wikipedia

    en.wikipedia.org/wiki/Panguite

    Panguite is a type of titanium oxide mineral first discovered as an inclusion within the Allende meteorite, and first described in 2012. [4] [5]The hitherto unknown meteorite mineral was named for the ancient Chinese god Pan Gu, the creator of the world through the separation of yin (earth) from yang (sky).

  5. Pleochroism - Wikipedia

    en.wikipedia.org/wiki/Pleochroism

    Pleochroism is an extremely useful tool in mineralogy and gemology for mineral and gem identification, since the number of colors visible from different angles can identify the possible crystalline structure of a gemstone or mineral and therefore help to classify it. Minerals that are otherwise very similar often have very different pleochroic ...

  6. Diagenesis - Wikipedia

    en.wikipedia.org/wiki/Diagenesis

    The term diagenesis, literally meaning "across generation", [3] is extensively used in geology. However, this term has filtered into the field of anthropology, archaeology and paleontology to describe the changes and alterations that take place on skeletal (biological) material. Specifically, diagenesis "is the cumulative physical, chemical ...

  7. Taaffeite - Wikipedia

    en.wikipedia.org/wiki/Taaffeite

    Taaffeite (/ ˈ t ɑː f aɪ t /; BeMgAl 4 O 8) is a mineral, named after its discoverer Richard Taaffe (1898–1967) who found the first sample, a cut and polished gem, in October 1945 in a jeweler's shop in Dublin, Ireland. [4] [5] As such, it is the only gemstone to have been initially identified from a faceted stone.

  8. Borate mineral - Wikipedia

    en.wikipedia.org/wiki/Borate_mineral

    The Borate Minerals are minerals which contain a borate anion group. The borate (BO 3) units may be polymerised similar to the SiO 4 unit of the silicate mineral class. This results in B 2 O 5, B 3 O 6, B 2 O 4 anions as well as more complex structures which include hydroxide or halogen anions. [2] The [B(O,OH) 4] − anion exists as well.

  9. Kyawthuite - Wikipedia

    en.wikipedia.org/wiki/Kyawthuite

    Kyawthuite was discovered in the vicinity of Mogok in Myanmar, an area famous for its variety of gemstone minerals. [6]Only one 0.3 gram sample of the naturally occurring form of this mineral is documented, and it is stored and on display at the Natural History Museum of Los Angeles County.