Eutectic intergrowths

Added to this mix of molecular chemistries are the water-soluble salts, such as sulfates and chlorides, that likely form salt hydrate compounds and eutectic intergrowths with water ice. These salts are probably leached out from the accreted rocky components of primitive rocky solids that make up chondritic meteorites that rain down on Earth. ... 

Separation of matrix phases, ferrite and aluminate, but without typical eutectic intergrowths content of free lime high alite coated with thin ferrite seam, then by thick belite cover Reducing conditions, quenched, lab experiment melt rich in silica, poor in lime resorption of belite which was prevented by quick cooling (Woermann, 1960)... 

High reflectivity of ferrite, eutectic intergrowth of ferrite and aluminate, no decomposition of alite Normal, oxidized clinker (Woermann, 1960)... 

Kamacite, aFe-Ni alloy, 5.5% Ni, body-centered cubic. Taenite, yFe-Ni alloy, 27-65% Ni, face-centered cubic. Plessite, eutectic intergrowth of kamacite and taenite. 

A higher temperature, Tc l 10K, phase in the Bi-Sr-Ca- Cu-O system has also been reported (78-80). This phase contains three infinite two-dimensional Cu-O layers. However, lead appears to play an important role in stabilizing this compound in phase pure form (75)(79)(80). Single crystals grown by eutectic melt growth techniques have been reported (77) but the phase purity of these crystals with respect to intergrowths containing various numbers of Cu-O planes is a concern. 

Coaxial intergrowth is a paragenetic relation that describes crystals of two different species growing with a common axis the misfit ratios between the two crystals in the direction of the common axis are small, without exception. The formation of coaxial intergrowth can be understood to be one crystal conjunct to the other in an epitaxial relation, where both continue to grow. If a liquid of eutectic A-B component is solidified from one side (unidirectional solidification), crystals of the two phases A and B precipitate in dotted, columnar or lamellar (with common axis) form, and show unique textures for unidirectional solidification. This is a well known phenomenon in metallurgy. 

Figure 10.7 Transmission electron micrograph of the intergrowth of two phases A and B, resembling a eutectic or eutectoid microstructure obtained when 70Ga2S3-30La2S3 (molar %) glasses with [O] between 0.49 and 2.12 wt % (Tg 560°C) were heated at 630°C. A is a new phase of unknown identity and B is Ga6Laio/3Si4, melilite [17],...

---