Cesàrolite Locality: Stevenson-Bennett Mine (Stephenson-Bennett Mine), Organ District, Organ Mountains, Doña Ana County, New Mexico, USA Field of view: 1.2 mm These white tapered crystals are probably vanadinite. They are associated with quartz and were collected on 10/8/2016. The black background has been identified as possibly cesarolite. The child photo shows the EDS graph. — Photo: Jerry Cone · Public domain
Cesàrolite
Cesàrolite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula PbMn⁴⁺₃O₆(OH)₂.
Key properties: Mohs hardness 4.5; specific gravity 5.29; Dull to submetallic luster.
IMA symbol Csà, grandfathered status — known before the IMA’s founding, named in 1920.
Found in cavities in galena.
It is found associated with Galena, coronadite.
The mineral was named to honor Giuseppe Raimondo Pio Cesàro (1849–1939), Professor of Mineralogy and Crystallography at the University of Liège, Liège, Belgium.