Amarantite Visible Spectrum
(300 - 1300 nm)
Amarantite is a hydrated ferric phosphate, Fe2(SO4)2O·7H2O. It is noteworthy in that it has a tetramer of four 6-coordinate Fe3+ ions sharring two common oxide ions that allows magnetic interactions among the ions resulting in enhanced absorption band intensity.
The amarantite absorption
spectrum
- Amarantite; GRR 187, a 0.014 mm
thick orange-red crystal from Sierra Gorda, Chile, NMNH R6254.
Back
to the list of minerals
Back
to the Index of Data Files
Back
to the
Mineral Spectroscopy home page
updated 4-Jul-2022