Collector Network - Links for Coins, Bank Notes, Cards, and Stamps Collectors.

Annotated links to material about metamorphic rocks, migmatites and granitoid rocks, and related areas of "hard-rock" geology.

Subjects include diagenesis and low temperature metamorphism in clastic, carbonate and volcanic rocks with special emphasis on clay minerals, petrology, isotopic studies, organic. maturation, geochemistry, fluids, and standards and calibration procedures.