A member of the dolomite group with dolomite and kutnohorite, ankerite is a relatively rare mineral species at Mont Saint-Hilaire. Color is usually pale beige or white. Luster is vitreous to pearly. Diaphaneity is transparent to translucent. Crystal Habits include epitactic growths to 1mm.
Fracture is uneven to subconchoidal.
Hardness is 3.5 - 4. Streak is white. Associated Minerals include albite, chlorite group, elpidite, marcasite and sphalerite. Indistinguishable from other members of dolomite or calcite groups.