Measurements: 150 x 100 x 60 mm
Description: Green tourmaline crystals sit in quartz, along with lots of mica and feldspar. Some tourmaline crystals run into the quartz.
are damaged. A small area on the specimen has been trimmed.
Composition: Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (tourmaline)
Karibib district, Erongo region
Specimen Code: NAM 020