Amakinite
Amakinite is a semi transparent yellow-green hydroxide mineral belonging to the brucite group that was discovered in 1962. Its chemical formula is written as 2. It usually occurs in the form of splotchy, anhedral crystals forming within a group or structure in other minerals or rocks, such as kimberlite. Its composition is as follows:
Amakinite is slightly magnetic and was named for the Amakin Expedition, which prospected the diamond deposits of Yakutia.