Datolite (/ˈdeɪtəlaɪt/) is a mineral that is commonly found in igneous and metamorphic rocks. Its name is derived from the Greek word "dateisthai", which means "to divide". The spelling of the word reflects the pronunciation of the word, as well as the origin of the word. The IPA transcription shows that the stress is on the second syllable, and the "o" is pronounced as a short "o". The final "e" is silent, and the "t" is pronounced as a "t" sound.
Datolite is a translucent or transparent mineral belonging to the silicate group. It is characterized by its green or colorless appearance, with occasional tints of yellow, white, or gray. The name datolite is derived from the Greek word "daton," meaning "to divide," due to its characteristic of splitting easily.
This mineral is commonly found in igneous rocks, such as basalt, gabbro, and granitic pegmatites. It typically forms in cavities or geodes, and its crystal structure is classified as orthorhombic. The crystalline form of datolite consists of prismatic or tabular-shaped crystals, often occurring in aggregates or grainy masses.
Datolite is renowned for its unique physical properties. It has a Mohs hardness of around 5.5 to 6.5, making it relatively soft and susceptible to scratches. Its luster varies from vitreous to resinous, and it has a specific gravity ranging between 2.9 and 3.1.
In terms of its applications, datolite holds significance in the field of lapidary due to its attractive colors and moderate hardness, often used for creating gemstones and ornamental carvings. Additionally, it encompasses interesting mineral specimens collected and studied by geologists and mineral enthusiasts.
Overall, datolite is a mineral recognized for its aesthetic appeal, occurring in various geological settings and possessing distinct physical properties that make it a captivating and sought-after specimen among collectors and lapidary artists.
A glossy crystal, colourless, or inclining to grey, or to a yellowish grey.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "datolite" has its origins in the Greek language. It is derived from the Greek word "dateisthai", which means "to divide" or "to cut". The name was given to the mineral because of its characteristic property of easily cleaving or breaking into small plate-like fragments. "Data" means "to divide" or "to cut" and "lite" is a common suffix used in mineral names to indicate the presence or nature of a mineral. Hence, "datolite" refers to a mineral that easily cleaves or breaks into small pieces.