Leucite, already a pseudomorph from a high temperature phase, commonly is altered to pseudoleucite. Pseudoleucite is not a mineral but a mixture of nepheline , orthoclase and analcime. Color is clear, white or gray, with yellowish and reddish tints possible. Luster is vitreous or greasy to dull. Also granular and massive.
Cleavage is absent.
Fracture is conchoidal Hardness is 5.5 - 6. Streak is white. Associated Minerals include olivine , labradorite , augite , biotite , nepheline and other feldspathoids. Best Field Indicators are crystal habit, density, low hardness, luster and associations.