Zinc-melanterite
Chemical Formula	Zn，Cu，FeSO4·7H2O
Species	Sulfates
Crystal System	Monoclinic
Mohs Scale	2
Color	Pale greenish-blue, yellow-green, apple-green; very pale blue-green in transmitted light
Streak	White
Luster	Vitreous
Refractive Index	n = 1.477 - 1.479 n = 1.483 - 1.487 n = 1.488 - 1.489
Crystal Habit：Massive, columnar. Comprised of microscopic rod-like crystals.

 Three oblique system. Fine plate crystal. Yellow green. Transparent to translucent. Vitreous luster. Streaks of gray. Hardness of about 2, the density of 2.181 g / cm ^3.