Definition of parkerite in US English:

parkerite

noun

Mineralogy
  • A mineral of the orthorhombic crystal system which consists of a sulphide of nickel and bismuth, Ni₃Bi₂S₂ (often also containing lead), and occurs as light bronze crystals with a metallic lustre.

Origin

1930s. From the name of Robert Lüling Parker, Swiss mineralogist + -ite.

Pronunciation

parkerite

/ˈpɑːkərʌɪt/