820f5461_Mineral_ID_Key__2
[0] Dark-green to Yellow-green, Yellow to Orange-Yellow, Brown, White, even Colorless [1] 3½ [3] PYROMORPHITE (Apatite Group): Pb5(PO4)3Cl [4] Hexagonal [5] usually in barrel- shaped, prismatic hexagonal crystals, may also be spindle- shaped, hollow  "hopper crystals";  rarely tabular or pyramidal, crystals may exhibit concentric color or structural zones due to zoned variations in composition [6] 7.04 [7] white streak; difficult to distinguish from mimetite without tests for PO4 vs. AsO4. [2] 
sub-vitreous to resinous
Mineral ID_Key
2