ULEXITE (TV Rock)

Ulexite crystals are acicular, often in rounded aggregates. The habit may also be fibrous, or in tufted masses. Ulexite is white or colourless and the streak is white. The mineral is transparent to translucent, and has a vitreous or silky lustre. It forms in evaporite bains and is insoluble in cold water, but soluble in hot water.

Hardness: 2.5 More about narsarsukite