Wavellite
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Wavellite is an aluminium basic phosphate mineral with formula Al₃(PO₄)₂(OH, F)₃·5H₂O. Distinct crystals are rare, and it normally occurs as translucent green radial or spherical clusters. Wikipedia
2V angle: Measured: 60° to 72°
Cleavage: perfect,, good,, distinct
Color: Green to yellowish-green and greenish blue and blue. and yellow, brown, white and colorless
Crystal class: Dipyramidal (mmm); H-M symbol: (2/m 2/m 2/m)
Crystal habit: Spherical, radial aggregates; striated prisms; crusty to stalactitic
Crystal system: Orthorhombic
Formula (repeating unit): Al3(PO4)2(OH,F)3·5H2O