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Cacoxenite: (Fe+++,Al)25(PO4)17O6(OH)12·75(H2O) Strengite: Fe+++PO4·2(H2O)
Comments: Lilac colored, spear-head shape crystals of strengite to 5mm in large, open vug associated with golden fibrous cacoxenite. Location: Coon Creek, Polk Co., Arkansas, USA. Scale: Picture size 2 cm. © Tom Loomis / Dakota Matrix
Cacoxenite: (Fe+++,Al)25(PO4)17O6(OH)12·75(H2O)
Comments: Radial, spherical individual crystal sprays of brownish yellow cacoxenite. Location: El Horcajo (Ciudad Real), Spain. Scale: 0.5 mm diameter. © Tom Loomis / Dakota Matrix