Krautite , Villyaellenite Field of view: 3 mm Locality: Săcărâmb, Certeju de Sus, Hunedoara County, Romania Description: Pink krautite with tan villyaellenite. Modified by CombineZP, stacking 11 images. Specimen was purchased in Tucson in February 2016 from Jaroslav Hyrsl. Locality was formerly known as Nagyag. This is the type locality for krautite. The entire specimen is shown in a daughter photograph, and the labels are also shown in a daughter photograph. — Photo: Michael J Pabst · CC BY 3.0
Krautite
Krautite is an IMA-recognized mineral species in the arsenate class, with the chemical formula Mn(AsO₃OH)·H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1). It is a member of the Koritnigite structural group.
Key properties: Mohs hardness 4; specific gravity 3.3; White with a faint rose tint streak; optically biaxial.
IMA symbol Kra, IMA status: approved, named in 1974.
Found on museum mineral specimens.
It is found associated with Rhodochrosite, nagyágite, quartz (Săcărı̂mb, Romania).
The mineral was named to honor Dr. François Kraut, mineralogist, Natural History Museum, Paris, France.