Eric Walker added Silicate mineral - Wikipedia to Nesosilicates and Inosilicates

Eric Walker added Zircon and Silicate mineral - Wikipedia to Nesosilicates, and added Nesosilicates to Silicates

Eric Walker added Zircon - Wikipedia to Zircon, and added Zircon to Nesosilicates

Eric Walker added a number of topics to Silicates, and added Silicates to Silicon and Minerals and gems