Matches in DBpedia 2015-10 for { ?s ?p "Gagarinite-(Ce) previously zajacite-(Ce) is a rare radioactive fluoride mineral with formula: Na(REExCa1-x)(REEyCa1-y)F6. REE refers to rare earth elements, mostly those belonging to the lanthanide series. It crystallizes in the trigonal - rhombohedral system and has a white vitreous appearance with a conchoidal fracture. It has a Mohs hardness of 3.5 and a specific gravity of 4.44 to 4.55. Zajacite is transparent with refractive indices of nω=1.483 and nε=1.503."@en }
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- Gagarinite-(Ce) comment "Gagarinite-(Ce) previously zajacite-(Ce) is a rare radioactive fluoride mineral with formula: Na(REExCa1-x)(REEyCa1-y)F6. REE refers to rare earth elements, mostly those belonging to the lanthanide series. It crystallizes in the trigonal - rhombohedral system and has a white vitreous appearance with a conchoidal fracture. It has a Mohs hardness of 3.5 and a specific gravity of 4.44 to 4.55. Zajacite is transparent with refractive indices of nω=1.483 and nε=1.503.".