Malachite (RARE locality specimen) (ex Al Kidwell Collection)

Item Description

The Slater Mine started operations in 1837 so it's possible that this piece is at LEAST 100 years old. It's the first Malachite specimen we've ever had to offer from this locality. Malachite in general is not a mineral species that people associate with Missouri, and this piece is honestly good quality for what it is. This specimen host soft to medium green crystal aggregates of Malachite measuring up to 1.1 cm on oxidized matrix. The crystals have moderate luster and look attractive up close. A must have specimen for any fan of Midwestern minerals, secondary ore minerals, or simply rare locality specimens. From the worldwide mineral collection of Albert Lewis Kidwell (January 1, 1919 - August 16, 2008). Al was a well-known mineral collector and research geologist with Carter Oil Company and later Exxon Oil Company in Houston, Texas. The phosphate species Kidwellite was named in his honor in 1974.