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Merrillite: Ca18Na2Mg2(PO4)14
Comments: BSE image of merrillite intergrown with silicates (plagioclase (plag), orthopyroxene(opx), olivine(ol)) next to coarse FeNi-metal (white). Location: Portales Valley meteorite (1988). Scale: See Image. © Alex Ruzicka / Planetary Science Research