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For more technical information on this tremolite asbestos
The angular fragments in a breccia show that the fragments were cemented where they were formed
and is a form of sparry magnesite
It is the most common mica
so a student will have to be observant
magnesite - white vitreous nodular magnesite - large hand/display specimen For more technical information onMagnesite, 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
