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 limestones . The old mineral name uralite is at times applied to an alteration product of primary pyroxene by a mixture composed largely of actinolite.
Actinolite and Tremolite are two very similar minerals that form a series with each other and essentially share the same chemical formula.Actinolite has a greater presence of iron over magnesium, whereas Tremolite has a greater presence of magnesium over iron. The green color of Actinolite is produced by the iron in its chemical structure.The amount of iron varies among specimens, causing ...
Actinolite-Tremolite Series. Note: Tremolite is defined as having an Mg/(Mg+Fe 2+) ratio ≥ 0.9; actinolite has a ratio of 0.5–0.9 and ferro-actinolite has a ratio of less than 0.5. The name actinolite was retained for petrological reasons in the nomenclature (Leake et al., 1997; Hawthorne et al. 2012), since it is entrenched in the literature.
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 schists. Tremolite may weather to talc, and both tremolite and actinolite may alter to chlorite or
Actinolite is a shielding crystal. It can heal the subtle energy body, filling in gaps that can result from psychic attack, illness, stress and unwanted negativity. It balances body, mind and spirit, enhancing higher awareness.
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Actinolite definition is - a bright green or grayish-green mineral of the amphibole group that is a silicate of calcium, magnesium, and iron occurring in fibrous, radiate, or columnar forms.
Actinolite in Hand Sample. Hand sample. Actinolite in quartz. Scanning electron micrograph of actinolite. Actinolite in Thin Section Thin Section GigaPans. Actinolite in actinolite schist, plane polars. Actinolite in actinolite schist, crossed polars. Actinolite, PPL Actinolite, XPL
Actinolite is a member of the amphibole class of asbestos minerals. Amphiboles break apart into small, straight, needle-like fibers that are easily airborne and pose a greater risk of inhalation and disease than the serpentine asbestos chrysotile.
Actinolite definition, a variety of amphibole, occurring in greenish bladed crystals or in masses. See more.