High Quality Content by WIKIPEDIA articles! Pabstite is a barium tin titanium silicate mineral that is found in contact metamorphosed limestone. It belongs to the benitoite group of minerals. The chemical formula of pabstite is Ba(Sn,Ti)Si3O9. It is found in Santa Cruz, California. The crystal system of the mineral is hexagonal. Pabstite is 37.7% SiO2, 3.8% TiO2, 24.4% SnO2 and 33.2% BaO. However, Ti and Sn could vary from point to point by approximately ±0.5% TiO2 and ±1% SnO2. Pabstite is a tin bearing analog of benitoite. Although, (Sn4+ = 0.71 A) and (Ti4+= 0.68A) have similar charge and ionic size, it is uncommon to find them substituting each other.

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