[APD] apatite - gypsum

["Candy M." <cry_little_sister at hotmail_com>]

Well lets see... if we can use Apatite for PO4 then we can add gypsum ( 
CaSO4-2(H2O), Hydrated Calcium Sulfate) for Ca and SO4 my rock collection 
may finally have a use LOL.

Candy

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