Gehthelvite CIT
9305 spectrum, 0.041 mm thick; VIS
region, plotted as 0.5 mm thick; Genthelvite
from Diamond Hill, Rhode Island, USA. This is a pink crystal.
The visible region spectrum was taken on a 0.342 mm thick slab
and plotted as 0.5 mm. The near-IR spectrum arises from Fe2+ is a four-coordinated tetrahedral site. Data Files thin ; thick