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Interesting match up - they're both classed as phosphates/arsenates/vanadates, one hydrous phosphate ( #wavellite), one anhydrous arsenate ( #durangite); both have fun crystal habit (when they accrue that far); both seem to be rare...
But wavellite has the more interesting chemical structure, and also I'm surprised it doesn't have arsenic OR something nastier, given the crystal structure mindat shows it likes... before it MAYBE goes all clusters of blobs. (I'd usually say botryoidal but mindat says the inside structure is still very sprays of crystal which is cooooooool but not very botryoid-formation.)
I think it's obvious how I'm voting, don't you? Lol. #MinCup24
via @MineralCup