@QuaternaryIdeo1 This paper shows XRD patterns for some double salt of sulfate. Hexahydrates show similar patterns to each other. But the pattern of K-Mn-SO₄ is different from them. So, at least, it can be said structure of K-Mn-SO₄ differ from hexahydrates. https://t.co/4sp00FFNTc https://t.co/ebHShHLOj5