Home > Mexico IV Ojuela II – January 19 > MS1743 Zincolivenite with Malachite
Zincolivenite with Malachite - Sold
- Mina Ojuela
- Mapimí
- Durango
- Mexico
- 4.6 × 2.4 × 1.2 cm – Miniature specimen (fits into a 5 cm cube)
Zincolivenite is a recently described (Chukanov et al., 2007) stoichiometric intermediate between olivenite, Cu2(AsO4)(OH), and adamite, Zn2(AsO4)(OH). Zincolivenite has the ideal formula CuZn(AsO4)(OH). Zincolivenite represents the greatest possible copper content in the adamite crystal structure. With additional copper incorporation (somewhere around Cu:Zn = 3:1), the symmetry changes to monoclinic, which is definitive for olivenite.
Zincolivenite here forms curved crystals to 1 mm or so, arranged into 2 mm spheres and a 11 mm aggregate. A pale green malachite coats the limonite matrix. The zincolivenite is intense emerald green. Found 2016. The identification of this species at Ojuela relies on a combination of Raman and single crystal X-ray diffraction methods.
