Mineral description : Lazulite

Blue lazulite from Västanå, Sweden. (size 4x3.5x1 cm)

Mineral class	Phosphates : Wavellite - Lazulite group
Chemical formula	(Mg,Fe)Al2(PO4)2(OH)2
Crystal system	Monoclinic
Habitus	Crystals bipyramidal, prismatic or octaedric. Most commonly as massive or grainy aggregates.
Cleavage	[001] distinct, fracture irregular, splintery or rough.
Hardness	5.5 - 6
Density	3.10
Color	Blue, bluish green, dark blue or pale blue.
Streak	White.
Luster	Vitreous, translucent to opaque.
Description
Occurance	In highly metamorphic quartzites rich in aluminium.
Associates	Kyanite,
Notes	Gives off water when heated in a test tube.
Localities	A not so common mineral in scandinavia. Sweden : Hålsjöberg, Torsby, Värmland. Commonly as aggregates or grains in kyanite quartzite. Västanå, Bromölla, Skåne. Hökensås, Tidaholm, Västgötaland. Vakerberget, Loberget, Vansbro, Dalarna. Ransäter, Munksfors, Värmland. Dicksberg, Munksfors, Värmland. Gräsmark, Sunne, Värmland. Norway : Storsjöen, Nord-Odal. In a quartzite together with kyanite rutile, svanbergite and pyrite. 20 km south of Elverum. Up to 7% lazulite together with kyanite and topaz in a quartzite. Saltfjellet. In a number of places in the kyanite zone, sometimes with topaz. Finland : Raatevaara, Kiihtelysvaara. In highly metamorphic quartzite. Valkeavaara. In quartzite. Viistola. In quartzite. Kutemajärvi, Oriveden.

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