Ilmenorutile

Ilmenorutile

 

a mineral of the rutile group, rich in Nb2O5 (as high as 19.64 percent). It is a complex solid solution of FeNb2O6 in the crystalline structure of TiO- (rutile). It is a rare mineral.

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Natural resources: Diamonds, titanium ore (rutile), bauxite, gold, iron ore, ilmenorutile, platinum, chromite, manganese, cassiterite, molybdenite, as well as forests, abundant fresh water, and rich offshore fishing grounds.
This is the locality for ilmenorutile (aka struverite) and consists of several pits along the strike of the pegmatite.
Lowest: ONE MILLION FOURTEEN to NONE OF ILMENORUTILE.
Minor minerals contained in the cement of the breccia body at Schneckenstein include tourmaline, fluorite, wolframite, molybdenite, ilmenorutile, apatite, chalcopyrite, malachite, azurite, and (rarely) cassiterite, turquoise, pyrite, wavellite and gold.
Natural resources: Diamonds, rutile, bauxite, gold, iron ore, ilmenorutile, platinum, chromite, manganese, cassiterite, molybdenite, as well as forests, abundant fresh water, and rich offshore fishing grounds.
The NYF Mukinbudin pegmatite field has been known for rare minerals including allanite, euxenite, fergusonite, ilmenorutile, monazite, xenotime and zircon since 2000.
Pseudomorphs of goethite after siderite appeared later in 2000, associated with small struvite and/or ilmenorutile and pyrolusite crystals.
Gebhard (2002) describes small, bright, silvery metallic ilmenorutile crystals on goethite pseudomorphs after siderite(?
Anatase has been identified in sill cavities as tan, powdery coatings, and as gray, submetallic, flaky aggregates associated with siderite and ilmenorutile.
Brookite is often coated by a black crust that has been identified in some specimens as ilmenorutile (Sabina, 1979), and may be the reason for the surface roughness.
Ilmenorutile and its tantalum analog, struverite, were described from the Nampoca pegmatite by Lima de Faria and Quadrado (1966).
An alphabetic list follows: ilmenorutile, limonite, muscovite, rutile, struverite, tourmaline, zinnwaldite, and three unknown phases.