High Quality Content by WIKIPEDIA articles! The general formula for Nambulite is (Li,Na)Mn4Si5O14(OH). It is named after the mineralogist, Professor Matsuo Nambu of Tohoko University, Japan, who is known for his research in manganese minerals. Nambulite belongs to the crystal system Triclinic-Pinacoidal (or Triclinic-Normal), meaning that is has three axes of unequal length (a, b, c), all intersecting at oblique angles with each other, and none of the angles are equal to 90°. It possesses a 1-fold symmetry axes (meaning it has no symmetry at all), and has no mirror planes. It's space group is P bar1.

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