Endive is also a common name for some types of chicory (Cichorium intybus). There are two main varieties of cultivated endive: 1  Curly endive, or frisee (frisÃ©e var). 2  Crispum this type has, narrow, green curly outer.  leaves
Calcite is more stable and common than aragonite under the chemistry of our modern seas.) Hardness 3 (down to 2. but also the ease with which it forms. in the form of marble.5 to 4. Calcite forms in a range of settings from hot springs and underground caverns to growing coral reefs and seashells.
One of the two most carbonate minerals in marine sediment. Composed of calcium carbonate, but is less stable than calcite and turns into calcite over time. Hydrogenous sediments can deposit directly from sewater to form aragonite crystals less than two centimeters long.