Actinolite

Chakra: Heart
Element: Earth
Name Origin: Actinolite is taken from the Greek word "Atkinos," which translates to "ray," in reference to the mineral's fibrous appearance.
Planet: Venus, Earth
Rarity: Common
Resonant Number: 9
Zodiac: Scorpio

Category: Inosilicates
Chemical Formula: [Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)
Crystal Class: Prismatic (2/m)
Crystal System: Monoclinic - Prismatic
Dana Classification: 66.01.03a.02 - Inosilicate Double-Width Unbranched Chains, W=2
Empirical Formula: Ca_1.83Na_0.22Mg_3.41Fe²⁺_1.26Al_0.23Fe³⁺_0.05Mn²⁺_0.02Ti_0.02Si_7.79Al_0.21O₂₂(OH)₂
Name: Actinolite
Space Group: C2/m
Strunz Classification: 09.DE.10 - Silicates (Germanates)
Synonym: Byssolite, Mountain Leather, Nephrite Jade, Smaragdite, Hexagonite

Cleavage: {110} Perfect
Common Colors: Pale Green, Dark Green, Yellow-Green, Black
Crystal Habit: Bladed, Fibrous, Radial
Diaphaneity: Translucent to transparent
Formula Mass: 853.16 gm
Fracture: Splintery and uneven
Luster: Vitreous (Glassy)
Mohs Hardness: 5 - 6
Streak: White