Loparite is a rare, mineral-oxide composed of niobium, tantalum, titanium, and other elements. This mineral is commonly found in granite pegmatites and alkali intrusive rocks. There are several synonyms for loparite, including avicennite, malyibdidite, and mosandrite. Avicennite is a mineral composed of vanadium, oxygen, and nitrogen, while malyibdidite is a rare mineral containing molybdenum. Mosandrite, on the other hand, is a mineral found in granite and syenite rocks, consisting of niobium, titanium, zirconium, and other elements. The synonyms of loparite can vary, depending on the different minerals and elements present in them.