Bromargyrite

Natural mineral form of silver bromide
2+1⁄2LusterAdamantine, resinous, waxyStreakWhite to yellowish whiteDiaphaneityTransparent, translucentSpecific gravity6.474Optical propertiesIsotropicRefractive indexn = 2.253Birefringenceδ = 0.000References[1][2][3]

Bromyrite or bromargyrite[4] is a natural mineral form of silver bromide[4] found mainly in Mexico and Chile. Hardness is 1.5 to 2. Related are chlorargyrite and iodyrite.

It was first described in 1859 for an occurrence in Plateros, Zacatecas, Mexico where it occurred in a silver deposit as an oxidation product of primary ore minerals.[1] It occurs in arid environments along with native silver, iodargyrite and smithsonite along with iron and manganese oxide minerals.[3]

References

  1. ^ a b Mindat page for bromargyrite
  2. ^ Webmineral page for bromargyrite
  3. ^ a b Handbook of Mineralogy
  4. ^ a b "Definition of BROMYRITE". www.merriam-webster.com. Retrieved 2023-01-20.
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