Hodgkinsonite

Nesosilicate mineral
4+1⁄2 - 5Optical propertiesBiaxial (-)Refractive indexnα = 1.720 nβ = 1.741 nγ = 1.746Birefringenceδ = 0.026Dispersionr < v moderate

Hodgkinsonite is a rare zinc manganese silicate mineral Zn2MnSiO4(OH)2. It crystallizes in the monoclinic system and typically forms radiating to acicular prismatic crystals with variable color from pink, yellow-red to deep red. Hodgkinsonite was discovered in 1913 by H. H. Hodgkinson, for whom it is named in Franklin, New Jersey, and it is only found in that area.[2]

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. ^ Mineral Galleries Archived 2008-10-18 at the Wayback Machine. Accessed August 22, 2008.
  • http://rruff.geo.arizona.edu/doclib/hom/hodgkinsonite.pdf Manual of Mineralogy
  • http://webmineral.com/data/Hodgkinsonite.shtml Webmineral
  • http://www.mindat.org/min-1913.html Mindat

External links

  • http://franklin-sterlinghill.com/palache/hodgkinsonite.stm
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