P. Bouilhol et al., The Canadian Mineralogist, Vol. 50, No. 5, 2012, pp. 1291–1304
P. Bouilhol et al., The Canadian Mineralogist, Vol. 50, No. 5, 2012, pp. 1291–1304
Geochemical data presented suggests remobilized CO
2 and H 2
O from a subducted island arc helped form the calcite + olivine-bearing veins in Kohistan, Pakistan. The authors provide details on the geologic setting, mineralogy and geochemistry of the vein assemblages, which can yield gem-quality olivine (peridot). The CO
2 and H 2
O from island arc magmas and carbonates mixed with mantle fluids rich in Bo (evidenced by ludwigite-vonsenite needle-like inclusions in olivine) as well as La, Ce, Ta, Cu, and Zn (from trace element analysis). Fluid origin and emplacement are discussed at length with emphasis on macro-geophysical mechanisms within the earth. Gem olivine production data and characterization of the rough was not provided.
Abstracted by Keith A. Mychaluk
P. Bouilhol et al., The Canadian Mineralogist, Vol. 50, No. 5, 2012, pp. 1291–1304
P. Bouilhol et al., The Canadian Mineralogist, Vol. 50, No. 5, 2012, pp. 1291–1304
Geochemical data presented suggests remobilized CO
2 and H 2
O from a subducted island arc helped form the calcite + olivine-bearing veins in Kohistan, Pakistan. The authors provide details on the geologic setting, mineralogy and geochemistry of the vein assemblages, which can yield gem-quality olivine (peridot). The CO
2 and H 2
O from island arc magmas and carbonates mixed with mantle fluids rich in Bo (evidenced by ludwigite-vonsenite needle-like inclusions in olivine) as well as La, Ce, Ta, Cu, and Zn (from trace element analysis). Fluid origin and emplacement are discussed at length with emphasis on macro-geophysical mechanisms within the earth. Gem olivine production data and characterization of the rough was not provided.
Abstracted by Keith A. Mychaluk
