Manganese-containing structures based on this mineral can exhibit “colossal magnetoresistance.” The bismuth and oxygen Aurivillius phase of this mineral exhibits ferroelectricity and is a candidate for low-temperature co-fired ceramics. Strontium titanate was part of the first series of a phase of this mineral named for Ruddlesden and Popper. High-temperature superconductors like YBCO have structures named for this mineral. (-5[1])Metal halides with structures named for this mineral are commonly used in solar cells. The (10[1])D-double-prime (10[1])layer is (10[1])characterized by high-pressure magnesium silicate called the “post” form of this mineral. (10[1])This mineral names (10[1])a structure for compounds of the form ABX3. (10[1])For 10 points, (10[1])what mineral consisting of calcium titanium oxide is named for a Russian mineralogist? ■END■ (10[1]0[2])