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Neptunite
Neptunite
18
listings
140
in gallery
Market data
About Neptunite
Formula
KNa
2
Li(Fe
2+
)
2
Ti
2
[Si
4
O
12
]
2
Mineral guide
Learn about Neptunite
Neptunite: jet-black, high-luster prisms with natrolite and benitoite; California State Gem Mine specimens exemplify striking contrast, rarity, and display.
