An anchimonomineral rock consists of 90 to 100 percent of one specific mineral, with only trace amounts of accessory minerals. Examples include pure quartzites, anorthosites, or dunites. Geologists use this term to highlight extreme chemical and mineralogical purity, which often points to specialized sedimentary sorting or intense magmatic crystal settling processes.
Heard on the job
The deposit transitions from a mixed gabbro into an anchimonomineral anorthosite layer near the contact zone.
Also heard as
- monolithologic