Special Malachite Lapidary Exhibit from Congo on Display

malachite carved face of woman - special exhibit at Rice Northwest Rock and Mineral MuseumWe are excited to feature some malachite lapidary work from the Democratic Republic of Congo (formerly Zaire) in our Lapidary Arts Room for only the month of March 2012. Make time to visit this rare and special collection at the Rice Northwest Rock and Mineral Museum.

malachite carved face - special exhibit at Rice Northwest Rock and Mineral MuseumOn loan from the Ziemer Family, the collection was built between 1975 and 1976 after Mr. Raymond Ziemer was given some pieces as a gift from a local tribe.

Carbonates are a group of minerals that contain the anion group CO32. They can be subdivided into the calcite, aragonite, dolomite or hydrated carbonate groups. The mineral malachite belongs in the hydrated (OH-bearing) carbonate group. It is a copper (Cu) bearing mineral and has the chemical formula Cu2CO3(OH)2. Continue reading