Members of this group of minerals can be used in t
Members of this group of minerals can be used in thermoluminescence and optical dating. Barium varieties of this mineral include hyalophane and celsian. Its crystals tend to twin easily and normally have a dull luster, and main properties used to describe members of this include the percentage of albite and anorthite endmembers. All members of this mineral family are silicates with eight oxygens in each molecule and common forms of them include orthoclase and plagioclase. Having an average hardness of 6 on the Mohs Scale, FTP, name these common minerals that make up more than half of the Earth's crust.
Members of this group of minerals can be used in thermoluminescence and optical dating.
{Feldspars}