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Diameter, mm (1mm - 0,039inch)

Collectible minerals - full range in stock "Nepheline"

Nepheline is a rock-forming mineral rarely found in crystals.

You can see nepheline stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Nepheline

General
Category Tectosilicate, feldspathoid
Formula
(repeating unit)
(Na,K)AlSiO4
IMA symbol Nph
Strunz classification 9.FA.05
Crystal system Hexagonal
Crystal class Pyramidal (6)
H-M Symbol: (6)
Space group P63
Identification
Formula mass 146.08 g/mol
Color White, gray, brown, brownish gray, or reddish white
Crystal habit Massive granular to prismatic
Twinning On [1010], [3365], and [1122]
Cleavage [1010] Poor
Fracture Subconchoidal
Mohs scale hardness 6
Luster Vitreous to greasy
Streak White
Specific gravity 2.55–2.65 (average: 2.59)
Optical properties Uniaxial (-)
Refractive index nω = 1.529–1.546; nε = 1.526–1.542
Birefringence δ = 0.003–0.004
Other characteristics non-radioactive, non-magnetic, non-fluorescent

Code: 4079
Mount Kukisvumchorr, Khibiny, Kola Peninsula, RF
70*73*35mm

0.00 $ $43.33

Code: 4080
Mount Kukisvumchorr, Khibiny, Kola Peninsula, RF
58*44*46mm

0.00 $ $38.33

Code: 4081
Mount Kukisvumchorr, Khibiny, Kola Peninsula, RF
45*38*25mm

0.00 $ $33.33

Code: 3781
Mount Kukisvumchorr, Khibiny, Kola Peninsula, RF
56*53*26mm

0.00 $ $45.00

Recommended
RARE Nepheline crystals archived
Code: 3370
Odikhincha deposit, Krasnoyarsk Territory, RF
51*47*35mm

0.00 $ $68.33

Code: 2473
Mount Kukisvumchorr, Khibiny, Kola Peninsula, RF
64*49*28mm

0.00 $ $45.00

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