Copiapite Visible Spectra (380 - 1300 nm)
Copiapite is an uncommon sulfate mineral which forms when iron sulphides oxidize in dry climates. The greenish-yellow color comes Fe
3+
.
Image of the copiapite absorption spectrum
greenish-yellow copiapite spectrum, 5K;
Alcaparrosa, Chile. Plotted as 0.180 mm thick. Data File:
beta 5K
;
gamma 6K
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