ANTOTHITE Meaning and
Definition
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Antothite is a relatively rare mineral that belongs to the zeolite group. It is typically found in the form of small crystals or grainy aggregates, and it often occurs as a secondary mineral formed through hydrothermal processes in cavities or fractures of volcanic rocks or basaltic vesicles.
The mineral has a distinctive deep green color, ranging from emerald green to black-green, which is due to the presence of iron in its chemical composition. It has a vitreous to pearly luster and a translucent appearance. Antothite crystallizes in the monoclinic crystal system, and its crystal structure consists of framework silicates known as zeolites, which are characterized by their porous and hydrated nature.
Chemically, antothite is a hydrous potassium and calcium iron silicate. Its formula can be represented as (K, Ca)3(Fe, Al)2Si13O36·12H2O, indicating its complex composition and the presence of water molecules within its structure.
Antothite is often associated with other zeolites such as stilbite or heulandite, as well as other secondary minerals like calcite, quartz, or mordenite. It is primarily sought after by mineral collectors due to its striking color and unique crystal habit. Its name is derived from the Greek word "anthos," meaning flower, alluding to the flower-like aggregates or radiating crystal habits it sometimes exhibits.
