KEYITE Meaning and
Definition
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Keyite is a rare mineral that belongs to the phosphate group. It is a secondary mineral that occurs in granitic pegmatites, which are coarse-grained igneous rocks characterized by their large mineral crystals. The mineral was first discovered in the late 19th century in the Key Peninsula area of Washington, United States, from where it derived its name.
Keyite usually appears as small, colorless to white crystals, often forming radial aggregates or fibrous masses. Its crystal structure is monoclinic, and it possesses a vitreous to pearly luster. The mineral's hardness is relatively low, measuring around 4.5 on the Mohs scale, and it has a specific gravity of approximately 3.3.
Chemically, keyite is composed of complex sodium and manganese phosphates. Its chemical formula is NaMn3(PO4)2(OH)4•6H2O. It typically forms in hydrothermal environments, as a result of the alteration of primary minerals. Keyite is often associated with other phosphate minerals such as lithiophilite and apatite.
Due to its rarity, keyite has limited practical applications and is primarily of interest to mineral collectors and researchers. Its intricate crystal structure and unique composition make it a subject of scientific investigation to gain a better understanding of mineral formation and geologic processes. Researchers study keyite to unveil insights into the hydrothermal alteration of sodium and manganese phosphates, aiding in the comprehension of geological processes and the evolution of mineral-rich environments.
