donbassite

…aluminum hydroxide sheet are called donbassite and have the ideal formula of Al_4.33(Si₃Al)O₁₀(OH)₈ as an end-member for the dioctahedral chlorite. In many cases, the octahedral aluminum ions are partially replaced by magnesium, as in magnesium-rich aluminum dioctahedral chlorites called sudoite. Cookeite is another type of dioctahedral chlorite, in which lithium…