Ulexite is a naturally occurring mineral composed of hydrated sodium calcium borate. It is often found in evaporite deposits and is known for its unique fibrous structure, which gives it a distinctive appearance. Ulexite is typically white or colorless and can form in large, fibrous masses. This mineral is sometimes referred to as "TV rock" because it can transmit light, creating a phenomenon similar to fiber optics. Ulexite is primarily used in the production of boron compounds and has applications in the glass and ceramics industries, as well as in agriculture as a micronutrient.