See more from this Division: Topical Sessions
See more from this Session: Strengthening Links between Metamorphic Conditions and Time: New Advances in High-Temperature Geochronology and Tracing P-T-t Paths of Metamorphic Terranes
Abstract:
1. 4Fe2TiO4 + O2 = 4FeTiO3 + 2Fe2O3
2. 4 FeTiO3 + 4Ca++ + 4H4SiO4 + O2 = 4CaTiSiO5 + 2Fe2O3 + 8H+ + 4H2O
3. 4FeTiO3 + O2 = 4TiO2 +2 Fe2O3
Copper sulfide minerals in calcite veins were oxidized forming copper oxide rims.
Light-rare-earth element transport is suggested by:
1. rims and patches of light-rare-earth element enriched epidote (La2O3 + Ce2O3 + Nd2O3 up to 13 weight percent) on and in epidote grains with no detectable rare-earth elements.
2. needles of a calcium, light-rare-earth bearing carbonate (possibly parasite, rontgenite or sychysite) in calcite veins and in vugs.
See more from this Division: Topical Sessions
See more from this Session: Strengthening Links between Metamorphic Conditions and Time: New Advances in High-Temperature Geochronology and Tracing P-T-t Paths of Metamorphic Terranes