A series occurs when two or more elements can substitute for each other without much distortion to the crystal structure. Szaibelyite is rich in magnesium while sussexite is enriched in manganese. Sussexite forms fibrous veins and masses. Color is white, pink, yellowish white or straw yellow. Luster is silky, pearly to earthy.
Specimens are translucent.
Crystal System is orthorhombic. Crystal Habits include fibrous veins and masses. Cleavage is perfect. Fracture is uneven. Hardness is 3 - 3.5.