Neptunite and Joaquinite-(CE) - California State Gem Mine, California, USA

Neptunite and Joaquinite-(CE)

Help improve this record

No owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

Excellent lustrous black prismatic crystals of Neptunite measuring to 1.8 cm long pleasingly contrast against the white Natrolite matrix. Rare scattered micro-crystals of brown Joaquinite-(Ce) are seen emerging from the Natrolite. In addition, very rare micro-bladed crystal groups of possible Orthojoaquinite-(Ce) occur in the Natrolite. A fine specimen from the California State Gem mine in San Benito County, California, USA.