Color: tin white to silver.
Lustre: metallic
Hardness: 6
Gravity :6.5 -6.8
Streak: black
Crystal system: isometric ; bar 3 2/m
Associated minerals:  erthrite
Fracture: conchoidal or uneven
Noteable occurrences : Ontario Norway and New Jersey .
Cleavage: is indistinct
Transparency: crystals are opaque