Name: Katuba Blue
Type of stone: Calcareous Gneiss
Quarry: Katuba Area, Chibombo District, Central Province, Zambia
Peculiarities: Decorative Stone with parts of blue Sodalite. Content of Sodalite is resistant against acids used under normal conditions. No change in color.
Usage: Preferred for high quality interior design. It is usable for decorative exterior and landscape architectural components, too.
Surfaces: All kinds of finishings except flaming (because no significant content of quartz).
Contact: Karl Steidel, Summersky Zambia Limited, Mail
Photos: Karl Steidel
Water absorption rate: (DIN EN 13755:2002-02): 0.2 Mass-%
Specific gravity: 2.56 kg/cdm (DIN EN 1936:1999-07)
Flectional strength: 11,6 MPa (DIN EN 12372:1999-06, DIN EN 12371:2002-01)
Frost resistance: F1 (stable) (DIN EN 12372:1999-06, DIN EN 1341:2002-04, DIN EN 1343:2002-04)
Radiation exposition, Gamma-radiation: 180 nSV/h (insignificant)
Acid resistance: resistant against low concentrated acids
Rust resistance: no rust