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Diameter, mm (1mm - 0,039inch)

Collectible minerals - full range in stock "Actinolite"

Actinolite is a rock-forming mineral of the amphibole group. Actinolite crystals are columnar or fibrous-tangled. Moreover, fine-fibered actinolite, due to its elasticity, is used as a filler in car tires. Jade is a type of actinolite.

You can see actinolite stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Actinolite

Category Inosilicates
(repeating unit)
IMA symbol Act[1]
Strunz classification 9.DE.10
Crystal system Monoclinic
Crystal class Prismatic (2/m)
(same H-M symbol)
Space group C2/m
Color pale to dark green, yellowish green and black. White or grey when in asbestos
Crystal habit bladed, fibrous, radial
Twinning simple or lamellar
Cleavage perfect along {110}.
Fracture uneven
Mohs scale hardness 5–6
Luster vitreous to dull
Streak white
Diaphaneity translucent to transparent
Specific gravity 3.00 (+0.10, -0.05)
Polish luster vitreous
Optical properties Biaxial (-)
Refractive index nα = 1.613–1.628
nβ = 1.627–1.644
nγ = 1.638–1.655
Birefringence 0.0250-0.0270
Pleochroism moderate, yellow to dark green (in stones that are transparent)
2V angle 78–82° (calc), 84–73° (meas)
Dispersion r < v
Ultraviolet fluorescence inert
Absorption spectra faint line at 503 nm
Code: 3263
Mica mine, Ural, RF

0.00 $ $13.09

Code: 1366
Mica mine, Ural, RF

0.00 $ $17.45

Code: 1323
Trudolyubovka, Crimea

0.00 $ $20.36

Code: 2715
Mica mine, Ural, RF

0.00 $ $13.09

Code: 2585
Mica mine, Ural, RF

0.00 $ $16.00

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