Riktite

Riktite is a type of mineraloid, a naturally occurring solid substance that does not have a crystalline structure. It is primarily composed of hydrated silica. Riktite is often found in porous volcanic rocks, particularly in basaltic lava flows. Its formation is typically associated with low-temperature hydrothermal alteration.

The appearance of riktite can vary, but it is often described as earthy or waxy. It can range in color from white to gray and may sometimes exhibit yellowish or brownish tints depending on impurities. Riktite can be soft and easily broken, and its texture can feel somewhat greasy to the touch. Geologically, riktite is considered a relatively recent mineraloid formation, often found in areas that have experienced volcanic activity and subsequent weathering processes. It is not a commercially significant mineral and is primarily of interest to geologists studying volcanic rock alteration and mineral formation. Its lack of a defined crystalline structure distinguishes it from true minerals like opal, another common hydrated silica.