Phenakite group - IR Reflectance spectra


Colorless phenakite – 0.50 ct – Unknown locality


irs  phenakite 050  colorless  Unknown Locality

Gray eucryptite/albite – 1.56 ct – (Londonderry, Nepean, Coolgardie), Australia


irs  eucryptite 156  gray  (Londonderry Nepean Coolgardie) Australia
Eucryptite is intergrowned in albite, this spectrum shows only albite features.

Very-light-yellow willemite – 0.42 ct – Franklin, New Jersey, USA


irs  willemite 042  very-light-yellow  Franklin NewJersey USA