Abswurmbachite
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Abswurmbachite (or Abswurmbachit or Abswurmbachita or IMA1990-007) (Cu,Mn2+)Mn3+6[O8|SiO4] is a mineral of copper, manganese, oxygen, and silicon. It is named after Irmgard Abs-Wurmbach, a German mineralogist. Its Mohs scale rating is 6.5.