Planjalites

Planjalites are a type of mineral that belongs to the group of silicate minerals. They are typically found in igneous and metamorphic rocks, often in areas where there has been intense thermal activity. The mineral was first discovered in the Avakou River valley in Yonne, France in 1878.

The composition of planjalites is characterized by a combination of elements, primarily including calcium, sodium, and aluminum. It has a chemical formula of CaNa6Al5Si18O54(OH)12·14H2O. The mineral's crystal system is triclinic, with a distinctive crystal structure that forms in the presence of certain minerals such as nepheline and clinochlore.

Planjalites are often used as an indicator mineral in the search for deposits of rare earth elements. They are also of interest to mineral collectors due to their rarity and unique composition. In addition, the study of planjalites has provided insights into the geological processes that occur in areas where there has been significant thermal activity.

The name "planjalite" was chosen due to its discovery at a location called Planjala in France. There are a number of planjalite deposits found worldwide, including in the United States, Australia, and Canada. Research into the properties and behavior of planjalites is ongoing, with potential applications in fields such as geology, mineralogy, and materials science. Further study of this mineral is necessary to fully understand its composition and geological significance.