Orthojoaquinite-(Ce)

orthojoaquinite-(Ce)

benitoite

neptunite

natrolite

Images

Formula: NaBa₂Fe²⁺Ce₂Ti₂(SiO₃)₈O₂(O,OH).H₂O
Cyclosilicate (ring silicate), joaquinite group
Crystal System: Orthorhombic
Specific gravity: 3.98 measured, 3.95 calculated
Hardness: 5 to 5½
Colour: Brown
Environments:

Metamorphic environments

Localities

At the type locality, the California State Gem Mine, Santa Rita Peak, New Idria Mining District, San Benito county, California, USA, orthojoaquinite-(Ce) occurs in a natrolite vein cutting a glaucophane schist inclusion in a serpentinite body (HOM), as mm sized crystals intergrown with joaquinite-(Ce) and associated with benitoite, neptunite and natrolite (AM 60.872-878, HOM).

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