GOLDEN AMPHIBOLITE FOR SALE

Golden amphibolite is an association of amphibole minerals formed from metamorphic processes at high temperature and pressure. Amphibole very rarely forms in this golden-colored variant, and is mined for commercial sale in parts of the United States and western Australia. Amphibolite is an inosilicate mineral with the chemical formula of SiO4, and typically forms in the metamorphosis of rock with high iron and/or magnesium content.

The process by which amphibolite forms involves the metamorphic transformation of magmatic minerals at about 500-700 degrees, and approximately 10 kilobars of atmospheric pressure. Most Amphibolite is formed during the process of Orogenesis, mountain formation that occurs when two tectonic plates collide and one rises above the other.
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9 Items ($75 to $595)