“…These are thought to be the result of transition from an unstable high temperature isometric form upon cooling. The mineral is related to the homonymous group that includes chambersite -(Mn 2+ ) 3 B 7 O 13 Cl, congolite -(Fe 2+ , Mg) 3 B 7 O 13 Cl, ericaite -(Fe 2+ ) 3 B 7 O 13 Cl and, trembathite -(Mg, Fe 2+ ) 3 B 7 O 13 Cl (Burns and Carpenter [26]). Boracite is typically found in evaporite sequences associated with gypsum, anhydrite, halite, sylvite, carnallite, kainite and hilgardite.…”