IMA mineral species
Neptunite
Na₂KLiFe²⁺₂Ti₂Si₈O₂₄
Transitional structure between phyllosilicate and other silicate unit, mineral.
Properties
| Chemical formula | Na₂KLiFe²⁺₂Ti₂Si₈O₂₄ |
|---|---|
| Elements | Na, K, Li, Fe, Ti, Si, O |
| Crystal system | Monoclinic |
| Mohs hardness | — |
| Density | — |
| Streak | — |
| Color | — |
| IMA symbol | Npt |
| Nickel–Strunz class | 9.EH.05 |
“—” means no reliable value in Wikidata yet. Check Mindat for full data.
🌍 Where it's found
Type locality (where it was first described): Narsaarsuk pegmatite, Greenland
- Type locality
- Notable source / deposit
- Country of origin
Marker positions are approximate (region or locality level). Type localities from Wikidata; notable sources curated by Crystopedia.
Learn more
- Neptunite on Mindat.org
- Wikipedia article
- Wikidata item Q423433 (source of this page's data – you can correct it there)
IMA mineral species
Monoclinic
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