MSH has provided some exceptional crystals. Color ranges from lemon-yellow to pale green, greenish yellow, bright orange, pink and pale violet. Luster is adamantine. Diaphaneity is transparent to translucent. Crystal Habits include superb elongated prisms to 1cm, wedge- shaped crystals and as embedded granular masses.
Fracture is uneven to subconchoidal.
Streak is white. Associated Minerals include aegirine, albite, amphibole group, analcime, ancylite, biotite, calcite, eudialyte, fluorapatite, labuntsovite, microcline, molybdenite, nepheline, polylithionite, pyrite, pyrrhotite, quartz and tetranatrolite.