1. The term used in the Folk classification to describe the micrite matrix and sparry calcite (sparite) cement in limestones.
2. Applied to rocks consisting of micrite without allochemical particles (see ALLOCHEM).
3. Applied to a carbonate particle formed by direct chemical precipitation.
"orthochemical." A Dictionary of Earth Sciences. . Encyclopedia.com. (September 23, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/orthochemical
"orthochemical." A Dictionary of Earth Sciences. . Retrieved September 23, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/orthochemical