AM_Nickenichite Formula: Na.76 Ca.41 Cu.39 (Mg2.45 Fe.55) As3 O12 Name: Nickenichite Unit cell: 11.882 12.76 6.647 90.0 112.81 90.0 , V=928.97 Space group: C12/C1 (15)

Auernhammer M , Effenberger H , Hentschel G , Reinecke T , Tillmanns E , Mineralogy and Petrology , 48 (1993) p.153-166, Nickenichite, a new arsenate from the Eifel, Germany, Locality: Nickenich, Nickenicher Sattel, Eifel, Germany