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

Hornblende mineral - You can buy these samples

Hornblende is a generic name for any dark minerals of the amphibole group.

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

Physical properties of Hornblende

General
Category Silicate mineral
Formula
(repeating unit)
Ca2(Mg,Fe,Al)5(Al,Si)8O22(OH)2
IMA symbol Hbl
Crystal system Monoclinic
Space group C2/m
Identification
Color Black to dark green or brown
Crystal habit Hexagonal/granular
Cleavage Imperfect at 56° and 124°
Fracture Uneven
Mohs scale hardness 5–6
Luster Vitreous to dull
Streak Pale gray, gray-white, white, colorless
Specific gravity 2.9
Pleochroism Strong
Code: 172
Istra district, Moscow region, RF
49*33*22mm

0.00 $ $12.73

Code: 171
Istra district, Moscow region, RF
18*17*16mm

0.00 $ $5.45

Code: 170
Istra district, Moscow region, RF
22*21*12mm

0.00 $ $5.45

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