JENSENITE Meaning and
Definition
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Jensenite is a mineral that belongs to the group of sulfides and sulfosalts. It is specifically classified as a thiospinel, which means it has a structure similar to that of spinel minerals but contains sulfur in place of oxygen. The mineral gets its name from Charles A. Jensen, an American mineralogist who first discovered it in 1963 at the Aga mine in Norway.
Jensenite is known for its unique crystal structure, which has an isometric system with octahedral and tetrahedral sites for cations. It typically occurs in small, opaque, black or dark brown grains or crystals. The mineral is commonly found in hydrothermal copper deposits, specifically in association with other sulfide minerals like chalcopyrite and bornite.
Chemically, jensenite is a copper iron antimony sulfide with the chemical formula Cu3FeSb4S6. It has a Mohs hardness of approximately 4 to 4.5, indicating its moderate resistance to scratching. Its black color and metallic luster make it easily distinguishable from other minerals.
Due to its association with copper deposits, jensenite holds a potential economic significance. It has been found in various localities worldwide, including Norway, Russia, Sweden, and the United States. However, its scarcity and limited occurrence make it a relatively rare mineral among collectors and mineral enthusiasts. Jensenite is often appreciated for its distinctive crystal structure, which contributes to the vast diversity of minerals found on Earth.
Etymology of JENSENITE
The word "jensenite" is derived from the name of the Danish chemist and mineralogist Johannes Theodor Jensen (1873-1950), who first identified and described the mineral. Jensen discovered jensenite while examining mineral samples from various locations, leading to its naming in his honor.
