Adamite
Chemical Formula	Zn2AsO4OH
Species	Phosphates
Crystal System	Orthorhombic
Mohs Scale	3
Specific Gravity	4.32-4.48
Color	Pale yellow, honey-yellow, brownish yellow, reddish; rarely white, colorless, blue, pale green to green, may be zoned;
Streak	white to pale green
Luster	Vitreous, Sub-Vitreous, Waxy, Greasy
Refractive Index	n = 1.708 - 1.722 n = 1.742 - 1.744 n = 1.763 - 1.773
Diaphaneity	Transparent, Translucent
Cleavage	Distinct/Goodon , good; on , poor.
Fracture	Irregular/Uneven, Conchoidal
Crystal Habit：Wedge-like prisms typically in druses and radiating clusters - also smooth botryoidal masses.
Geological Setting：A secondary mineral in the oxidised zone of zinc- and arsenic-bearing hydrothermal mineral deposits.