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Formula: NaBa2Fe2+La2Ti2(SiO3)8O2(O,OH,F).H2O
Cyclosilicate (ring silicate), joaquinite group
Crystal System: Orthorhombic
Specific gravity: 4.1 measured, 4.14 calculated
Hardness: 5
Colour: Brown
Environments:
Localities
The only reported locality to date (August 2020) is the type locality, the Narsaq River pegmatite, Kvanefjeld,
Ilímaussaq complex, Narsaq,
Kujalleq, Greenland. Here orthojoaquinite-(La) was found as masses up to 4 x 3 x 1 cm, consisting of bent flakes
1 mm long, in the
intermediate zone of
nepheline-sodalite
syenite pegmatites. Associated minerals include
riebeckite, analcime,
sodalite and
steenstrupine-(Ce)
(Mindat, Minrec 33.2.166).
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