Hinsdalite psuedomorph after
Pyromorphite.
CHEMISTRY - (Pb,Sr)Al3(PO4)(SO4)(OH)6
CRYSTALLOGRAPHY - Hexagonal
CRYSTAL GROWTH AND HABITS - Hinsdalite crystals are tabular or psuedocubic. It can also be granular to massive.
COLOR AND OPTICAL PROPERTIES - Hinsdalite is colorless to white, sometimes with a greenish cast.
HARDNESS - 4.5
SPECIFIC GRAVITY - 3.65
LUSTER - Vitreous to greassy
STREAK - White
BREAKABILITY - Very good cleavage along {0001}
OCCURRENCE -
ASSOCIATED MINERALS - Pyrite, Pyromorphite, Chalcocite, Galena
MINERAL NAME - For its occurrence in Hinsdale, Colorado