Triplite (Mn,Fe2)2(PO4)(F,OH) is a rare mineral that forms in phosphate-rich granitic, pegmatites typically as irregular brown opaque masses. Triplite was first described in 1813 for an occurrence in Chanteloube, Limousin, France. The name is from the Greek triplos for triple, in reference to the three cleavage directions. It has rather low hardness for a gemstone, at 5-5.5 on the Mohs scale. In color and appearance, it is very similar to rhodocrosite, another manganese bearing mineral. Chemically, it is also quite similar to triploidite the difference being that triplite is F dominant while triploidite is OH dominant.