Kalpana Kalpana


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Category  Phosphate mineral
Strunz classification  8.CD.20
Space group  P21/a
Formula (repeating unit)  (Fe,Mn,Mg)3(PO4)2·4H2O
Crystal system  Monoclinic
Crystal class  Prismatic (2/m) (same H-M symbol)

Ludlamite is a rare phosphate mineral with formula: (Fe,Mn,Mg)3(PO4)2·4H2O.

It was first described in 1877 for an occurrence in Wheal Jane mine in Cornwall, England and named for English mineralogist Henry Ludlam (1824–1880).


It occurs in granite pegmatites and as a hydrothermal alteration product of earlier phosphate bearing minerals in a reducing environment. It occurs associated with whitlockite, vivianite, triploidite, triplite, triphylite, siderite, phosphoferrite, fairfieldite and apatite.


Ludlamite Wikipedia

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