##NAMES=Vonsenite ##RRUFFID=R050221 ##IDEAL CHEMISTRY=Fe^2+^_2_Fe^3+^O_2_(BO_3_) ##LOCALITY=Monchi mine, Burguillos del Cerro, Badajoz, Extremadura, Spain ##OWNER=RRUFF ##SOURCE=Marcus Origlieri ##DESCRIPTION=Mass of thin bladed black crystals ##STATUS=The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis ##URL=rruff.info/R050221 ##MEASURED CHEMISTRY=(Fe^2+^_1.96_Mg_0.03_Mn_0.01_)_Σ=2_(Fe^3+^_0.98_Al_0.02_)_Σ=1_BO_5_ 5.014013e+001, 1.725091e-002 5.206860e+001, 1.681834e-002 5.399707e+001, 1.539040e-002 5.592553e+001, 1.965068e-002 5.785400e+001, 2.436748e-002 5.978246e+001, 3.369642e-002 6.171093e+001, 2.816042e-002 6.363940e+001, 2.845989e-002 6.556786e+001, 2.882271e-002 6.749633e+001, 2.508724e-002 6.942480e+001, 2.444230e-002 7.135326e+001, 2.726522e-002 7.328172e+001, 2.906306e-002 7.521019e+001, 2.891471e-002 7.713866e+001, 2.981719e-002 7.906712e+001, 3.300639e-002 8.099559e+001, 3.300142e-002 8.292406e+001, 3.235834e-002 8.485252e+001, 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