Cesbronite

(repeating unit)Cu3Te6+O4(OH)4IMA symbolCes[1]Strunz classification4.JN.15Dana classification34.7.2.1Crystal systemOrthorhombicCrystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)Space groupPbcnUnit cella = 8.624, b = 11.878
c = 5.872 [Å], Z = 2IdentificationColorGreenCleavagepoor on {010}, good on {021}TenacityBrittleMohs scale hardness3LusterSubadamantineStreakGreenDiaphaneityTranslucentSpecific gravity4.45 (measured)Optical propertiesBiaxial (+)Birefringenceδ = 0.149PleochroismDistinct, various shades of green2V angle72o (calculated)Ultraviolet fluorescenceNoneSolubilitySoluble in HCl and HNO3. Insoluble in waterReferences[1][2][3][4][2]

Cesbronite is a copper-tellurium oxysalt mineral with the chemical formula Cu3Te6+O4(OH)4 (IMA 17-C). It is colored green and its crystals are orthorhombic dipyramidal. Cesbronite is rated 3 on the Mohs Scale.[3] It is named after Fabien Cesbron (born 1938), a French mineralogist.[4]

Occurrence

It was first found in the Bambollita ("La Oriental") mine in the Mexican state of Sonora. It also occurs in the Tombstone District of Cochise County, Arizona and the Tintic District of the East Tintic Mountains, Juab County, Utah.[5] It is often associated with argentian gold, teineite, carlfriesite, xocomecatlite, utahite, leisingite, jensenite and hematite.[6]

See also

References

  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. ^ Mineralienatlas
  3. ^ Webmineral entry
  4. ^ Williams, Sidney A. (1974). "Cesbronite, a new copper tellurite from Moctezuma, Sonora" (PDF). Mineralogical Magazine. 39 (307): 744. Bibcode:1974MinM...39..744W. doi:10.1180/minmag.1974.039.307.02. S2CID 129501305. Archived from the original (PDF) on 2016-05-27. Retrieved 2016-09-20.
  5. ^ Mindat.org Cesbronite
  6. ^ "Handbook of mineralogy" (PDF). Retrieved 2016-09-20.


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