Kentrolite, a carbonate mineral, is pronounced /ˈkɛntrəlaɪt/. The spelling of the word is based on its etymology. The word derives from Greek kentron, meaning "a sharp point or spike" and lithos, meaning "stone". It is named after its characteristic shape, which resembles a sharp stone point. The IPA phonetic transcription of the word emphasizes the stress on the second syllable and the pronunciation of the "t" followed by "r", which are important to pronounce the word correctly.
Kentrolite is a rare mineral belonging to the ulytaite group and is composed of lead oxychloride. It typically occurs as translucent to transparent crystals that can range in color from colorless to yellow, with some specimens exhibiting a greenish tint. The mineral crystallizes in the monoclinic crystal system and can be found in certain lead and zinc deposits.
In terms of its physical properties, kentrolite has a Mohs hardness of approximately 2, making it relatively soft. Its specific gravity ranges from 6.4 to 6.7. Additionally, kentrolite exhibits a non-metallic luster and a perfect cleavage in one direction, which contributes to its distinct crystal habit.
Kentrolite derives its name from the Greek word "kentron," meaning "spur," due to its characteristic crystal formations that resemble spurs or arrowheads. It is primarily sought after by mineral collectors due to its rarity and unique crystal habit.
In scientific studies, kentrolite has been used as an indicator mineral for certain geological processes. It commonly occurs as a replacement product in lead and zinc ore deposits, forming due to hydrothermal or low-temperature fluid interactions with pre-existing minerals. The identification and analysis of kentrolite can provide valuable insights into the formation and evolution of such deposits.
The word "kentrolite" has its etymology rooted in the Greek language. It is derived from the Greek words "kentron" meaning "center" or "sharp point" and "lite" referring to a mineral. The term "kentrolite" was first used in the mid-19th century to describe a specific mineral, which is a variety of muscovite mica found in copper mines.