Hibonite

Hibonite

Hibonite

Add article description

Hibonite is a mineral with the chemical formula (Ca,Ce)(Al,Ti,Mg)12O19, occurring in various colours, with a hardness of 7.5–8.0 and a hexagonal crystal structure. It is rare, but is found in high-grade metamorphic rocks on Madagascar. Some presolar grains in primitive meteorites consist of hibonite. Hibonite also is a common mineral in the Ca-Al-rich inclusions found in some chondritic meteorites. Hibonite is closely related to hibonite-Fe (IMA 2009-027, (Fe,Mg)Al12O19)) an alteration mineral from the Allende meteorite.[4] Hibonites were among the first minerals to form as the disk of gas and dust swirling around the young sun cooled.[5]

Quick Facts General, Category ...

A very rare gem, hibonite was discovered in 1953 in Madagascar by Paul Hibon, a French prospector.[6]

Colour

Hibonite can vary in colour, from a bright blue, to green, to orange, to a nearly black deep brown. The colour is related to the degree of oxidation; meteoritic hibonite tends to be blue.[7]

See also

References

  1. [1]
    Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. [2]
    "Handbook of Mineralogy" (PDF).
  3. [3]
    "Hibonite: Hibonite mineral information and data". www.mindat.org.
  4. [4]
    "IMA Mineral List with Database of Mineral Properties". rruff.info.
  5. [5]
    "A Year in Review and a Look to the Future". Field Museum of Natural History. January 11, 2019. Retrieved 4 December 2021.
  6. [6]
    "Hibonite gemstone information". www.gemdat.org.
  7. [7]
    Ihinger, Phillip D.; Stolper, Edward (May 1986). "The color of meteoritic hibonite: an indicator of oxygen fugacity". Earth and Planetary Science Letters. 78 (1): 67–79. Bibcode:1986E&PSL..78...67I. doi:10.1016/0012-821X(86)90173-1.
Wikimedia Commons has media related to Hibonite.


This article about a specific oxide mineral is a stub. You can help Wikipedia by expanding it.
Share this article:

This article uses material from the Wikipedia article Hibonite, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.