21 This study provides new insights into the relation between thermally-induced 22 structural reorganization and the macroscopic mechanical properties of radiation-damaged 23 titanite. The natural sample contains ca. 30% amorphous fraction. Low temperature annealing 24 affects only slightly the sample stiffness and leads to a softening resulting from the defect 25 2 annihilation in crystalline ...

Oxygen diffusion in natural and synthetic single-crystal titanite was characterized under both dry and water-present conditions. For the dry experiments, pre-polished titanite samples were packed in O-enriched quartz powder inside Ag–Pd capsules, along with a fayalite–magnetite–quartz (FMQ) buffer assemblagemaintained physically separate by Ag–Pd strips. The sealed Ag–Pd capsules were themselve...

Titanium raw materials are widely used for the synthesis of various functional – sorbents radionuclides and rare earth elements, additives, filler pigments, etc. Since most titanium concentrates imported, in line with import substitution program, production titanite concentrate from apatite-nepheline ores Khibiny deposits is a promising trend supplying national industry materials. The article p...

The prograde metamorphism of eclogites is typically obscured by chemical equilibration at peak conditions and by partial requilibration during retrograde metamorphism. Eclogites from the Eastern Blue Ridge of North Carolina retain evidence of their prograde path in the form of inclusions preserved in garnet. These eclogites, from the vicinity of Bakersville, North Carolina, USA are primarily co...

Abstract We present a new method of linking microstructures, electron backscatter diffraction (EBSD)–derived crystallographic vorticity axis (CVA) analysis, and titanite petrochronology to directly link fabric development specific deformation events in shear zone rocks with complex histories. This approach is particularly useful where overprinting incomplete, such that it unknown which being da...

marbles containing high-pressure mineral assemblage was found from the sanandaj-sirjan metamorphic belt in the nahavand area in western iran.  the high-pressure marbles occur as small bodies or lenses within pelitic schist layers and show compositional banding of carbonate- and silicate- rich bands.  textural analysis revealed two metamorphic stages.  the early stage is testified by relicts of ...