Pale blue compact bladed Hemimorphite forming a thick layer that covers the open vugs in matrix.
The label that came with the piece mentions that it's from Tiger, but it looks like 79 mine Hemimorphite to us. I'm sure if we're mistaken one of our AZ experts can set us straight.
Hemimorphite
Formula
Zn4Si2O7(OH)2·H2O
Crystal System
Orthorhombic
Crystal Habit
Massive, Stalactitic, Mammillary
Cleavage
Perfect, None, None
Luster
Vitreous (Glassy)
Color
brown, colorless, greenish gray, yellow brown, white