Arrojadite Visible Spectra (300 - 2500 nm)
Arrojadite-(KFe) is a iron phosphate mineral. Its ideal foumula is KFe
2+
Ca(Na
2
)Fe
2+
13
Al(PO
4
)
11
(PO
3
OH)(OH)
2
. Its greenish-yellow color
comes f rom the iron content.
Image of the arrojadite absorption spectrum
Arrojadite-(KFe) spectrum
;
from GRR 32c, George Smith Mine, Clarmont, New Hamphsire, USA . Plotted as 0.20 mm thick. Data Files:
E||a
;
E||b
;
E||c.
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revised 3-Jul-2022
comes f rom the iron content.
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