Showing side with cleavage.
Showing side without cleavage.
Specimen size 10x5x3 cm.
|Mineral class||Silicates : Tektosilicates : Nefeline - Leucite - Sodalite group.|
|Crystal system|| |
|Habitus||Most commonly in cleavable masses without crystal form.|
|Cleavage||Perfect in one plane, fracture subconchoidal.|
|Color||Gray to weeakly reddish gray.|
|Luster||Vitreous, pearly on cleavages. Transparent to translucent.|
|Occurance||In lithium pegmatites.|
|Associates||Spodumen and other lithium minerals.|
|Notes||Easy to separate from feldspar since it only have one cleavage.|
|Locations|| A less common mineral with two good localities. |
| To silicate index.
|| Mineral group index.
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