Kottigite
Kottigite is a relatively rare zinc arsenate hydrate which is a member of the Vivianite Group, and the zinc analogue of parasymplesite and erythrite. It forms monoclinic, flattened prismatic {010}, translucent, colorless to white, or reddish crystals; and also occurs massive, as crusts with a crystalline surface and fibrous structure. Kottigite was named by James Dwight Dana in 1850 in honor of Otto Friedrich Kottig, German chemist of Schneeberg, Saxony, who made the first chemical analysis. Kottigite occurs in oxidized zones of arsenic ores containing zinc, such as the type locality: Daniel mine, Neustadtel, Schneeberg district, Erzgebirge, Saxony, Germany. Other notable localities include: Mina Ojuela, Mapimi, Durango, Mexico; Tsumeb, Otjikoto region, Namibia; and Sterling Hill mine, Ogdensburg, Sussex Co., New Jersey..
You can buy these rare crystals online from The Arkenstone, www.iRocks.com to add fine mineral specimens to your collection.
- MEX19-12
- Kottigite
- Mina Ojuela, Mapimi, Durango, Mexico
- Thumbnail
- 2.1 x 2.1 x 0.9 cm
- RARE16J-20
- Kottigite-Parasymplesite
- Ojuela mine, Mapimi, Durango, Mexico
- 5.1 x 3.7 x 2.4 cm