Oligoclase is a common mineral in the feldspar group that is often used in the construction of buildings, as well as in the production of ceramics and glass. There are several synonyms for the word oligoclase, which include andesine, albitophyre, and labradorite. Andesine is a plagioclase feldspar that is found in volcanic rocks, while albitophyre is a type of rock that is rich in albite, a sodium-rich feldspar. Labradorite, on the other hand, is a much rarer feldspar that is known for its striking iridescence, making it a popular choice in jewelry making. Despite their differences, all of these synonyms are related to the mineral oligoclase and have similar physical properties.