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In the 1920s and 1930s sand was barged from Long Beach
the air and moisture in the sand are rapidly heated
we collected a huge striped piece
Better than average student specimens
magnesite - white vitreous nodular magnesite - hand/display specimen In the 1920s and 1930sMagnesite, MgCO3 Magnesite, magnesium carbonate, is usually earthy or granular, but it can be massive vitreous or crystalline and can occur in the form of nodules up to several feet in diameter. This particular magnesite is the cryptocrystalline vitreous form. When vitreous magnesite was first discovered in Muddy Valley, Nevada in the late 1800s, it was thought to be kaolin and plans were made to mine it as such. In 1915, before mining could begin, a
US$ 13.95
US$ 57.95
US$ 25.00
