Cylinders of sand crystals, composed of single crystals of calcite that poikilitically enclose detrital grains, and calcite-cemented sandstones from the Tensleep (Pennsylvanian, Wyoming) and Supai ...
The high-temperature transition in calcite, located by extrapolation near 985° at 1 bar, has been determined to 5 kbar by differential thermal analysis in hydrostatic apparatus. The transition ...