Actinolite is commonly found in metamorphic rocks, such as contact aureoles surrounding cooled intrusive igneous rocks. It also occurs as a product of metamorphism of magnesium-rich …

It is an important indicator mineral of the greenschist facies, and many petrologists use the actinolite-pumpellyite facies to describe a defined set of pressure and temperature conditions. …

Actinolite is a moderately common and well-studied amphibole group mineral, notable for its green to grayish-green coloration and fibrous or bladed crystal habit.

Detailed description, properties, locality information guide about the mineral actinolite (byssolite and nephrite).

Jan 17, 2023 · Actinolite is a variety of asbestos, occurring in long, slender, needlelike crystals and also in fibrous, radiated, or columnar forms in metamorphic rocks (such as schists) and in …

Actinolite is an amphibole silicate mineral that crystallizes in the form of long blades or a skinny needle like structure. This crystal is mainly found in its distinct dark green color, but can also …

Nov 4, 2025 · Actinolite, a member of the amphibole minerals group, represents one of nature’s most versatile silicate compounds, playing essential roles from industrial applications to the …

Jun 20, 2022 · Actinolite is a green, translucent amphibole gemstone known for its cat’s eye type. It’s often present in nephrite jade and quartz. Learn actinolite properties, value, and healing uses!

Actinolite, an amphibole mineral in the tremolite-actinolite series of calcium, magnesium, and iron silicates. The minerals in this series are abundant in regionally metamorphosed rocks, such as …

From the Greek, aktinos, meaning "ray" in allusion to actinolite's fibrous nature. Comments: Sharp, floater actinolite crystal with a slight green tint. Location: Namibian dessert, more or …