Home > Mexico IV Ojuela II – January 19 > MS1749 Lotharmeyerite
Lotharmeyerite - Sold
- Mina Ojuela
- Mapimí
- Durango
- Mexico
- 2.9 × 1.8 × 1.7 cm – Thumbnail specimen (fits into a 2.5 cm cube)
Lotharmeyerite is a nominally a calcium zinc arsenate mineral, originally found at Ojuela. Dunn (1983) named the mineral in honor of chemist Julius Lothar Meyer (1830-1895), who helped develop the periodic table of the elements. Restudy of lotharmeyerite showed that lotharmeyerite belongs to the tsumcorite group (Brugger et al. 2002). Significant Mn3+ substitutes for Zn in the crystal structure (Yang et al. 2012), which imparts its rich red-brown color.
Lotharmeyerite forms 1-2 mm patches of red-brown crystals. Underlying the lotharmeyerite is a mineral related to arseniosiderite, however not fully characterized. A minute 4 mm Mn-bearing adamite completes the assemblage. Found 1981-1982.