neptunite
Sign in to saveNeptunite is a silicate mineral with the formula KNa2Li(Fe2+, Mn2+)2Ti2Si8O24. With increasing manganese it forms a series with mangan-neptunite. is the variety with vanadium replacing the titanium in the formula.
In the Vinony graph
Vinony's link graph records 159 inbound references to neptunite, and connects out to silicate mineral, Russia and Greenland.
It is catalogued under topics including Lithium minerals, Minerals in space group 9 and Monoclinic minerals.
Vinony links it to 18 Wikipedia language editions.
Key facts
- Mineral.name
- Neptunite
- Mineral.category
- Phyllosilicate minerals
- Mineral.image
- Neptunite, bénitoïte, joaquinite-(Ce) sur natrolite et serpentine (USA) 2.jpg
- Mineral.imagesize
- 260
- Mineral.caption
- Neptunite crystals
- Mineral.formula
- KNa2Li(Fe2+,Mn2+)2Ti2Si8O24
- Mineral.IMAsymbol
- Npt
- Mineral.dana
- 70.04.01.01
- Mineral.strunz
- 9.EH.05
- Mineral.system
- Monoclinic
- Mineral.class
- Domatic (m) (same H-M symbol)
- Mineral.symmetry
- Cc
- Mineral.unit cell
- a = 16.427(2), b = 12.478(2) c = 9.975(1) Å; β = 115.56(1)°; Z = 4
- Mineral.color
- Black; deep red-brown in thin fragments
- Mineral.habit
- Prismatic or tabular
- Mineral.twinning
- Interpenetrant on {301}
- Mineral.cleavage
- {110} good
- Mineral.fracture
- Conchoidal
via Wikipedia infobox
Wikidata facts
- Image
- Neptunite.jpg
Show 6 more facts
- Nickel-Strunz 9th edition (updated 2009)
- 9.EH.05
- Commons category
- Neptunite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.EH.05
- chemical formula
- Na₂KLiFe²⁺₂Ti₂Si₈O₂₄
- IMA Mineral Symbol
- Npt
- Strunz 8th edition (series ID, updated)
- VIII/D. – Unklassifiziert
Sources (1)
via Wikidata · CC0
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Encyclopedic overview
1 sectionsContents
- References
{{Infobox mineral | name = Neptunite | category = Phyllosilicate minerals | boxwidth = | boxbgcolor = | image = Neptunite, bénitoïte, joaquinite-(Ce) sur natrolite et serpentine (USA) 2.jpg | imagesize = 260 | caption = Neptunite crystals | formula = KNa2Li(Fe2+,Mn2+)2Ti2Si8O24 | IMAsymbol = Npt | dana = 70.04.01.01 | strunz = 9.EH.05 | system = Monoclinic | class = Domatic (m) (same H-M symbol) | symmetry = Cc | unit cell = a = 16.427(2), b = 12.478(2) c = 9.975(1) Å; β = 115.56(1)°; Z = 4 | color = Black; deep red-brown in thin fragments | habit = Prismatic or tabular | twinning = Interpenetrant on {301} | cleavage = {110} good | fracture = Conchoidal | tenacity = Brittle | mohs = 5–6 | luster = Vitreous | refractive = nα = 1.69–1.6908, nβ = 1.6927–1.7, nγ = 1.7194–1.736 | opticalprop = Biaxial (+) | 2V = 36° to 49° | birefringence = 0.0294–0.0452 | pleochroism = x = yellow-orange, y = orange, z = deep red | streak = Brown to red brown | gravity = 3.19–3.23 | density = | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Nearly opaque | other = Piezoelectric | references = }}
Neptunite is a silicate mineral with the formula KNa2Li(Fe2+, Mn2+)2Ti2Si8O24. With increasing manganese it forms a series with mangan-neptunite. is the variety with vanadium replacing the titanium in the formula.
Excerpted from Wikipedia’s “neptunite” article, available under the CC BY-SA 4.0 licence.