A. Does not readily leave mark on paper but can be scratched by
ordinary pocket knife
Limonite Rusty yellowish Dark-brown color; 5-5½
brown some specimens
have a shiny
black surface;
notice streak
B. Cannot be scratched by an ordinary pocket knife
Cassiterite Pale brown, pale Brown; 6-7
yellow or white submetallic;
heavy; notice
streak
Hematite Dark reddish brown Dark brown color; 5½-6½
commonly occurs (may be
as granular or softer)
compact masses;
notice streak
Limonite Rusty, yellowish Dark brown color; 5-5½
brown some specimens
have a shiny
black surface;
notice streak