Blue Kyanite & Black Mica, from Brazil (No.124)

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Blue Kyanite & Black Mica, from Brazil (No.124)Blue Kyanite & Black Mica, from Brazil

Measurements Approx.
Height - 6 cm
Width - 2.5 cm
Length - 8.5 cm

Kyanite is a bladed-type crystals, which can form in fibres and masses. Colours include blue, black, grey, white, green, yellow and pink.


The Mica group of sheet silicate minerals includes several closely related materials having nearly perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition. The nearly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms.