Stolzite
Chemical Formula	PbWO4
Species	Molybdates & Tungstates
Crystal System	Tetragonal
Mohs Scale	2-3
Specific Gravity	8.34
Color	Reddish brown, brown, yellowish gray, smoky gray, straw-yellow, lemon-yellow; may be green, orange, red
Streak	White
Luster	Sub-Adamantine, Resinous
Refractive Index	n = 2.270 n = 2.180 - 2.190
Diaphaneity	Transparent, Translucent
Cleavage	Imperfect/FairImperfect on ; indistinct on
Fracture	Irregular/Uneven, Conchoidal
Crystal Habit：Crystals dipyramidal to tabular
Geological Setting：Oxidation zone of hydrothermal tungsten-bearing lead deposits.