Class: phosphate, arsenate, vanadate
Rarity: Common Crystal:  crystal with a short or long prismatic and tabular, also masive, glovular and fibrous habit 
Colour: colorless, white, gray, yellow, green, purple, blue, red, brown;   Streak: white;   Lustre: vitreous to subresinous;   Transparency: transparent, translucent; Cleavage: indistinct;   Fracture: conchoidal;  
Hardness - between 5 and: 5;   Density - between 3.1 and: 3.2

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