Ludlamite and Vivianite Crystals in Rock Matrix
Dimensions (millimeters): 25 x 15 x 15
Dimensions (inches): 1 x .6 x .6
Origin: Santa Eulalia, Chihuahua, Mexico
Vivianite, phosphate mineral, hydrated iron phosphate [Fe3(PO4)2·8H2O].
Ludlamite is named for Henry Ludlam, an English mineral collector from London. Its chemistry is (Fe,Mn,Mg) 3(PO 4) 2·4H 2O
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