Linking Microstructures and Reactions

Reaction mechanism at sillimanite isograd

Textural evidence for reaction mechanism

Criteria for sequence of mineral growth (1)

Criteria for sequence of mineral growth (2)

Criteria for sequence of mineral growth (3)

Chemistry of mineral replacements

Grain size and overlapping sequences (1)

Grain size and overlapping sequences (2)

Poikiloblasts and mineral replacements

Porphyroblast growth in graphitic rock

The “Staurolite-out” reaction

Damara Belt, Trough Zone

Damara Belt, Central Zone

Damara belt, structural/metamorphic setting

Metastability (1), Damara belt

Metastability (2), Bushveld aureole

Sequence of reactions: metastability?

Overstepping and metastable behaviour

Linking microstructures and reactions - summary