Gartrellite is a mineral name consisting of ten letters with a unique spelling. It is pronounced as /ˈɡɑːrtrelaɪt/, with emphasis on the third syllable. The first part, "gart", is spelled with a "g" instead of a "j" sound despite the similar pronunciation. The second part, "rell", is pronounced as "rawl" rather than "rel" due to the double "l." Finally, the last three letters "ite" indicate that it is a type of mineral. Despite its complexity, the spelling of "gartrellite" follows typical English language rules.
Gartrellite is a mineral that belongs to the zeolite group. It is a rare and complex hydrated sodium-aluminum silicate, with a chemical formula of Na2CaAl4Si23O55·10H2O. The mineral was named after an Australian miner named David Gartrell, who discovered it in 1962 while working at Strontian, North Wales, United Kingdom.
In terms of physical properties, gartrellite typically forms as small, acicular or fibrous crystals that are colorless to white. It has a vitreous to silky luster and a white streak. Its transparent to translucent appearance, along with its fibrous habit, distinguishes it from other minerals. Gartrellite crystals often occur in cavities or veins in volcanic rocks, associated with other zeolites such as natrolite and mesolite.
The crystal structure of gartrellite consists of interconnected channels and cavities. It has a complex three-dimensional framework, wherein hydrated sodium, calcium, aluminum, and silicon ions are arranged. The channels within the crystal structure can accommodate water molecules, making gartrellite a hydrated mineral.
Gartrellite is a mineral of scientific interest and not commonly used in industrial applications. Its rarity and complex crystal structure make it a study subject for geologists and mineralogists, contributing to our understanding of zeolite minerals and their formation.