Joaquinite

joaquinite

joquinite-(Ce)

orthojoaquinite-(Ce)

orthojoaquinite-(La)

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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.

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