1. a white crystalline mineral composed of hydrated sodium calcium borate, often called television stone for its fiber-optic properties
Usage: mineralogy

Examples

• The ulexite specimen displayed remarkable optical properties when light passed through it.
• Collectors prize ulexite for its ability to transmit images from one surface to another.
• The mineral ulexite is commonly found in desert playas and salt lakes.
• When polished, ulexite can project text placed beneath it onto its top surface.
• The television stone effect of ulexite makes it popular among mineral enthusiasts.
• Ulexite deposits are often associated with other borate minerals.