Biotite

K(Fe2+,Mg)3(AlSi3O10)(OH,F)2 Biotite, one of the several members of the mica group found at MSH is fairly abundant in many environments…

Bismuth

Bi Bismuth is extremely rare at Mont Saint-Hilaire, only a few specimens have been recovered. PHYSICAL CHARACTERISTICS: Color is usually silver-white.…

Brochantite

Cu4(SO4)(OH)6 Brochantite is relatively rare at MSH. PHYSICAL CHARACTERISTICS: Color is usually red. Luster is dull. Diaphaneity is opaque. Crystal System is monoclinic; P21/a. Crystal…

Calcite

CaCO3 At Mont Saint-Hilaire, one can find excellent crystals of calcite in several habits. PHYSICAL CHARACTERISTICS: Color ranges from colorless (very…

Cerussite

PbCO3 Cerussite is an extremely rare secondary mineral at Mont Saint-Hilaire. PHYSICAL CHARACTERISTICS: Color varies from white to off-white. Luster is adamantine…

Celestine

Na26REE6(SiO3)6(PO4)6(CO3)6(S4+O2)O Celestine is extremely rare at Mont Saint-Hilaire and is hard to distinguish visually. PHYSICAL CHARACTERISTICS: Color varies from white to…

Chalcopyrite

CuFeS2 Chalcopyrite is a rare mineral at Mont Saint-Hilaire. PHYSICAL CHARACTERISTICS: Color is brass-yellow, sometimes with iridescence. Luster is metallic. Diaphaneity is opaque.…

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)9 Clinochlore, a member of the chlorite group, is found in marble xenoliths at Mont Saint-Hilaire. PHYSICAL CHARACTERISTICS: Color is usually…

Albite

NaAlSi3O8 L’albite, un membre des feldspaths, est l’une des espèces les plus communes. On la retrouve sous forme de cristaux…