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.
All Answers (6) Calcite and aragonite are polymorphs meaning they have the same chemical formula, but different crystaline structures. Aragonite is meta-stable and about 1.5 times as soluble as calicte in seawater. There are a large variety of calcifying organisms ranging from corals to coraline alage and many others.