nenadkevichite
Sign in to saveNenadkevichite is a rare silicate mineral containing niobium with the chemical formula . It forms brown to yellow to rose colored orthorhombic dipyramidal crystals with a dull to earthy luster. It has a Mohs hardness of 5 and a specific gravity of 2.86.
In the Vinony graph
Within Vinony's link graph, nenadkevichite is referenced by 35 other articles, and connects out to Mohs scale of mineral hardness, silicate mineral and relative density.
Vinony files it under Calcium minerals, Cyclosilicates and Minerals in space group 55.
Its subject is documented across 9 Wikipedia language editions.
Key facts
- Mineral.name
- Nenadkevichite
- Mineral.image
- Nenadkevichite-Ancylite-20236.jpg
- Mineral.caption
- Nenadkevichite with ancylite crystals on the side
- Mineral.category
- Cyclosilicate
- Mineral.strunz
- 9.CE.30a
- Mineral.system
- Orthorhombic
- Mineral.class
- Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m)
- Mineral.symmetry
- Pbam
- Mineral.color
- Rose-pink, very light pink, light yellow, brown; dark brown due to inclusions
- Mineral.cleavage
- Poor/indistinct
- Mineral.fracture
- Irregular/uneven
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 5
- Mineral.luster
- Vitreous, dull
- Mineral.streak
- White, very light rose-pink
- Mineral.diaphaneity
- Transparent, translucent, opaque
- Mineral.gravity
- 2.78 – 2.885 g/cm3
via Wikipedia infobox
Wikidata facts
- Image
- Nenadkevichite-20230.jpg
Show 7 more facts
- IMA Mineral Symbol
- Nkv
- chemical formula
- (Na,☐)₈Nb₄(Si₄O₁₂)₂(O,OH)₄·8H₂O
- Strunz 8th edition (series ID, updated)
- VIII/B.04
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.CE.30a
- Commons category
- Nenadkevichite
- Nickel-Strunz 9th edition (updated 2009)
- 9.CE.30a
- crystal system
- orthorhombic crystal system
Sources (1)
via Wikidata · CC0
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Encyclopedic overview
1 sectionsContents
- References
Nenadkevichite is a rare silicate mineral containing niobium with the chemical formula . It forms brown to yellow to rose colored orthorhombic dipyramidal crystals with a dull to earthy luster. It has a Mohs hardness of 5 and a specific gravity of 2.86.
It was first reported in 1955 from a nepheline syenite pegmatite in the Kola Peninsula. In addition it has been reported from Mont Saint-Hilaire, Canada; the Ilimaussaq complex, Greenland; Windhoek District, Namibia; and Zheltye Vody, Ukraine. It was named after Konstantin Avtonomovich Nenadkevich (1880–1963), Russian mineralogist and geochemist.
Excerpted from Wikipedia’s “nenadkevichite” article, available under the CC BY-SA 4.0 licence.