as a chromophore in and gems Chromophore Description Fe 2+: Green colour, eg in forsterite and the blue-green colour in phosphophyllite.In some with high concentrations of Fe 2+ the colour is brown.: Fe 2+ in square planar site: Raspberry red colour in gillespite from El Roasrio, Baja California, Mexico.: Fe 2+ in eight-coordinate site: Higher concentrations in pyrope ...
Hot Crushers Brief Introduction
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