Actinolite (Tremolite)Ca2(Mg,Fe)5Si8O22(OH)2
Class: Silicate Subclass: Amphibole Hardness: 5 - 6 Density: 3.0 - 3.4 Streak: White Lustre: Vitreous Habit: Aggregate of acicular grains Colours: Greenish - white | | Crystal System: Monoclinic Cleavage: Uneven Fracture: Subconchoidal Magnetism: None Reaction with HCl: None | Identification in hand sample: Habit and colour are best indicators. Associations: Metamorphosed calcareous sediments Comments: Higher in Fe than tremolite. |