Zincovelesite-6N6S, Zn3(Fe3+,Mn3+,Al,Ti)8O15(OH), a new högbomite-supergroup mineral from Jacupica mountains, Republic of Macedonia

Magnesiohögbomite-6N12S, Mg5Al11TiO23(OH), a new högbomite-group mineral from the DeWitts Corners, Ontario, Canada

“…The taaffeite group includes minerals with modified nolanite Be TM 4 O 8 ( N ’) modules (Armbruster, 2002). The velesite group, the only one known with iron-spinel modules ( T 2 Fe 4 O 8 ), currently consists of one parent species zincovelesite-6 N 6 S , Zn 3 (Fe 3+ ,Mn 3+ ,Al,Ti) 8 O 15 (OH) (Chukanov et al , 2018). The remaining three – högbomite, nigerite (Armbruster, 2002) and beltrandoite (Cámara et al , 2018) groups – include minerals with aluminium-spinel modules ( T 2 Al 4 O 8 ).…”

“…o it -supergroup minerals are complex oxides that form a polysomatic series composed of spinel T 2 M 4 O 8 (S) and nolanite TM 4 O 7 (OH) (N) modules, where T and M represent tetrahedrally and octahedrally coordinated cations, respectively (Armbruster, 1998Heiny and Armbruster, 2002). (Chukanov et al, 2018). The remaining three -o it , ni rit and beltrandoite (Cámara et al, 2018) groups -include minerals with aluminium-spinel modules (T 2 Al 4 O 8 ).…”