Tags: Chemical Substance, Mineral.
Triploidite is an uncommon manganese iron phosphate mineral with formula: (MnFe)2PO4OH. It crystallizes in the monoclinic crystal system and typically occurs as elongated and striated slender prisms which may be columnar to fibrous. Its crystals may be pinkish to yellowish brown or red-orange.It was first described in 1878 for an occurrence in the Branchville Quarry Branchville Fairfield County Connecticut.
