Jonesite

Jonesite

Jonesite

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Jonesite is a mineral with the chemical formula Ba4(K,Na)2[Ti4Al2Si10O36]*6H2O.[5] This mineral is named after Francis Tucker Jones (1905–1993), who discovered the mineral while working as a Research Chemical Microscopist at Berkeley in CA.[6] Jonesite has diffraction symmetry of mmm, which implies an orthorhombic system with all three axes perpendicular to each other and the angles between each axis equal to 90 degrees.[7] In addition to symmetrical properties, Jonesite is a biaxial mineral with birefringence, which is a term to describe the difference between index of refraction.[8] Jonesite is anisotropic, meaning the speed of light changes through the mineral, so the mineral shows color when viewed in crossed polarized light under a microscope. The mineral also has medium relief, which is a measure of how well the mineral stands out when viewed under a microscope in plane polarized light.[9] In addition to being one of the rarest minerals in the Benitoite Gem mine located in California, Jonesite also is the first titanosilicate mineral with a porous double-layered crystal structure.[10] This discovery is important because titanosilicate frameworks have industrial uses in energy companies and are used in containing radioactive waste.[11]

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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]
    Ralph, J., and Chau I. (2010) Jonesite Mineral Information and Data. Mineralogy Database. Retrieved 23 September 2010, from <http://www.mindat.org/min-2112.doc>.
  3. [3]
    Barthelmy, D. (2010) Jonesite Mineral Data. Mineralogy Database. Retrieved 11 September 2010, from <http://webmineral.com/data/Jonesite.sdoc>.
  4. [4]
    Wise, W., and Pabst, A. (2010) Jonesite. Mineralogical Record. Retrieved 23 September 2010, from <http://euromin.w3sites.net//mineraux/JONESITE.doc>.
  5. [5]
    American Geological Institute. (2010) Jonesite. Retrieved 11 September 2010, from <http://glossary.agiweb.org/dbtw-wpd/exec/dbtwpub.dll>
  6. [6]
    Barthelmy, D. (2010) Jonesite Mineral Data. Mineralogy Database. Retrieved 11 September 2010, from <http://webmineral.com/data/Jonesite.sdoc>.
  7. [7]
    Wise, W., and Pabst, A. (1977) Jonesite: A New Mineral from the Benitoite Gem Mine, San Benito County, California. Mineralogical Record, 8, 453-456.
  8. [8]
    Barthelmy, D. (2010) Jonesite Mineral Data. Mineralogy Database. Retrieved 11 September 2010, from <http://webmineral.com/data/Jonesite.sdoc>.
  9. [9]
    Wise, W., and Pabst, A. (2010) Jonesite. Mineralogical Record. Retrieved 23 September 2010, from <http://euromin.w3sites.net//mineraux/JONESITE.doc>.
  10. [10]
    Krivovichev, S., and Armbruster, T. (2004) The Crystal Structure of Jonesite: A First Example of Titanosilicate with Porous Double Layers. American Mineralogist, 89, 314-318.
  11. [11]
    Krivovichev, S., and Armbruster, T. (2004) The Crystal Structure of Jonesite: A First Example of Titanosilicate with Porous Double Layers. American Mineralogist, 89, 314-318.
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