Feldspar and Talc – Norway
£1.00 – £4.00
Specimen containing plagioclase feldspar and talc. Both minerals are abundant silicates, and these specimens from Southern Norway are perfect for analysis, while also being suited to collectors of Norwegian minerals. Supplied with white card trays and information labels.
Plagioclase Feldspar and Talc specimen from Otta in Southern Norway. Feldspar is the most abundant mineral in Earth's crust, comprising over 40% of the total estimated mass. This variety, Plagioclase is the Sodium/Calcium rich variety of Feldspar, providing a pale pink colour. Talc is another abundant mineral, notably it is the index mineral for number 1 on Moh's hardness scale - which means it is one of the least scratch resistance minerals on Earth; it is extremely friable and can leave a smooth, dusty trail on your hands once touched - this is not dangerous and is actually good for your skin! This specimen is perfect for laboratory or classroom analysis, as it shows the symbiosis of 2 abundant and siginificant silicate minerals in one specimen. Also ideal for a collection revolving round Norwegian minerals or silicates. Each specimen is provided with a white card tray and information label.