Loparite

Formula: (Ce,Na,Ca)(Ti,Nb)O₃Mohs scale hardness: 5,5-6

Specific gravity: 4,6-4,9 g/cm³

^{Rare earth elements: La, Ce, Dy, Tb,}

^{Rare earth content, %: (Ce,La,...)}2^O3 ^32–34;

^{REOmax=35,1 %}

^{Other constituents, %: TiO}2 ^{39.2–40; (Nb,Ta)}2^O5 ^{8–11; CaO 4.2–5.2; Na}2^O

^{7.8–9; Sr, K, Si, Hf, Th}

^{Mineralklasse: Oxide}

References

1. https://en.wikipedia.org

2. http://www.mindat.org/min-2432.html

3. https://en.wikipedia.org/wiki/Loparite-%28Ce%29

4. https://books.google.cl/books?id=jPskAQAAIAAJ&pg=RA4-PA13&lpg=RA4-PA13&dq=Green+Cove+Springs+Mine+monazite&source=bl&ots=8xH_PV9MoG&sig=MkXPfqzQ6OM4zmU2OWc-eHL2-GQ&hl=ru&sa=X&ved=0ahUKEwj6-bG1mfbMAhUDE5AKHYGfCWsQ6AEIKDAD#v=onepage&q&f=false