Museum Lamprophyllite is a rare species from MSH, and is not distinguishable from its analog barytolamprophyllite. Color is usually pale yellow, orange, orange-yellow and brownish yellow. Luster is vitreous to waxy or dull. Diaphaneity is transparent to opaque. Crystal Habits include fine fibrous and foliated thin strips to 2mm forming compact spheres, and as sharp bladed crystals to 4mm.
Fracture is uneven.
Hardness is 2 - 3. Streak is pale brown to yellowish. Associated Minerals include aegirine, albite, eudialyte, fluorite, nepheline, pectolite, sodalite and villiaumite.