Joaquinite

minerals

joquinite-(Ce)

orthojoaquinite-(Ce)

orthojoaquinite-(La)

The joaquinite group includes:
bario-orthojoaquinite: Ba4Fe2+2Ti2O2(SiO3)8.H2O
joaquinite-(Ce): NaBa2Fe2+Ti2Ce2(Si4O12)2O2(OH).H2O
orthojoaquinite-(Ce): NaBa2Fe2+Ce2Ti2(SiO3)8O2(O,OH).H2O
orthojoaquinite-(La): NaBa2Fe2+La2Ti2(SiO3)8O2(O,OH,F).H2O
strontio-orthojoaquinite: NaSr4Fe3+Ti2Si8O24(OH)4
strontiojoaquinite: (Na,Fe)2Ba2Sr2Ti2(SiO3)8(O,OH)2.H2O

These are all cyclosilicates (ring silicates), with specific gravity about 4, hardness 5 to 5½ and colour brown, yellow or orange.

Back to Minerals