Ixiolite is a mineral that belongs to the oxide group, specifically the columbite-tantalite series. It is a black or dark brown mineral that is typically found in granite pegmatites and other mineral deposits. The term "ixiolite" is derived from the Greek word "ixiós," meaning sticky or viscous, alluding to the mineral's tendency to clump together and form clusters.
Chemically, ixiolite is a complex mineral consisting of various elements, including tantalum, titanium, iron, and niobium. Its chemical formula can vary within the columbite-tantalite series, where the tantalum content can be significant, often replacing niobium in the structure. The exact composition can vary depending on the specific locality where ixiolite is found.
Physically, ixiolite is typically opaque and has a submetallic luster. It can occur in prismatic or tabular crystal forms, often exhibiting striations on the crystal faces. Ixiolite has a hardness of approximately 6-6.5 on the Mohs scale, indicating moderate hardness and resistance to scratching.
Due to its composition, ixiolite is often associated with minerals containing tantalum and niobium, such as tantalite and columbite. It is frequently valued as a source of these rare elements, which have various industrial applications, including electronics, aerospace, and energy storage technologies.
In summary, ixiolite is a black or dark brown mineral that occurs in granite pegmatites and other mineral deposits. It consists of tantalum, titanium, iron, and niobium, and exhibits a submetallic luster. Its composition can vary within the columbite-tantalite series, and it is valued for its tantal
