Olivine is a magnesium iron silicate mineral and belongs to the orthorhombic crystal system. Кристаллы короткие столбчатые.. Complete crystals are rare. Most of them are irregular round granular aggregates. They have glass luster, прозрачный до полупрозрачного, и твердость 6.5-7.0. Olivine is a kind of self-colored gemstone, which is green due to iron […]
