Schoonerite Locality: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf , Waidhaus , Vohenstrauß , Oberpfälzer Wald , Upper Palatinate , Bavaria , Germany ( Locality at mindat.org ) Picture width 1 mm. Collection and photo Christian Rewitzer — Photo: Christian Rewitzer · CC BY-SA 3.0
Schoonerite
Schoonerite is an IMA-recognized mineral species in the phosphate class, with the chemical formula ZnMn²⁺Fe²⁺₂Fe³⁺(PO₄)₃(OH)₂(H₂O)₇·2H₂O.
It crystallizes in the orthorhombic crystal system (space group Pmab). It is a member of the Calcioferrite-Schoonerite structural group.
Key properties: Mohs hardness 4; specific gravity 2.87–2.92; Pale brown streak; Subvitreous to waxy luster; optically biaxial.
IMA symbol Soo, IMA status: approved, named in 1976.
A rare late-stage low-temperature hydrothermal alteration and weathering product formed from earlier more reduced phases.
It is found associated with Mitridatite, laueite, strunzite, whitmoreite, siderite, ludlamite, messelite, vivianite, whitlockite, hydroxylapatite, childrenite, jahnsite, arrojadite.
The mineral was named to honor Richard Schooner (1925–), Woodstock, Connecticut, USA, student and collector of New England minerals.