Mineral description : Ilmenorutile

Possible ilmenorutile crystals on a base of dark apatite.
From Knipan mine area, Iveland, Norway.

Mineral class Oxides : Rutile - Cassiterite group

Chemical formula (Ti,Nb,Fe)₃O₆

Crystal system Tetragonal

Habitus As flat prismatic crystals. Commonly as unregular grains.

Cleavage

Hardness 6-6.5

Density 4.2

Color Black

Streak Reddish brown.

Luster Sub metallic, opaque.

Description

Occurance In granitic pegmatites.

Associates Thortveitite, quartz, feldspar.

Notes In Norway it is found in every pegmatite containing thortveitite. It is the pegmatitic mineral containing most scandium after thortveitite, at average 1.5% in analysed samples.
Type locality : Miass River, Zlatoust region, Ilmen Mountains, Ural, Russia.
Discovered in 1854 by Koksharov, named after the Ilmen mountains.

Localities A rare mineral in Scandinavia but with some nice localities in Southern Norway.
Sweden :

Kråkemåla, Oskarshamn municipal, Småland.

Norway : Only found in granitic pegmatites in Sørlandet.

Storsinken, Knipan mine area, Iveland.
Ramskjaer, Søndeled.
In a number of other pegmatites in Iveland, for example Tveit 1, Omdal 1, Håverstad 1, Håverstad 4, Tuten 2, and a number of more localities.
Auselheia, Tvedestrand.
Monbua, Tromøya, Aust-Agder.

Finland : (Sorry if the names are messed up, but I don't speak Finnish)

Penikojan, Someron. In a pegmatite.

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Last changed : 2001-07-10

Mineral class	Oxides : Rutile - Cassiterite group
Chemical formula	(Ti,Nb,Fe)₃O₆
Crystal system	Tetragonal
Habitus	As flat prismatic crystals. Commonly as unregular grains.
Cleavage
Hardness	6-6.5
Density	4.2
Color	Black
Streak	Reddish brown.
Luster	Sub metallic, opaque.
Description
Occurance	In granitic pegmatites.
Associates	Thortveitite, quartz, feldspar.
Notes	In Norway it is found in every pegmatite containing thortveitite. It is the pegmatitic mineral containing most scandium after thortveitite, at average 1.5% in analysed samples. Type locality : Miass River, Zlatoust region, Ilmen Mountains, Ural, Russia. Discovered in 1854 by Koksharov, named after the Ilmen mountains.
Localities	A rare mineral in Scandinavia but with some nice localities in Southern Norway. Sweden : Kråkemåla, Oskarshamn municipal, Småland. Norway : Only found in granitic pegmatites in Sørlandet. Storsinken, Knipan mine area, Iveland. Ramskjaer, Søndeled. In a number of other pegmatites in Iveland, for example Tveit 1, Omdal 1, Håverstad 1, Håverstad 4, Tuten 2, and a number of more localities. Auselheia, Tvedestrand. Monbua, Tromøya, Aust-Agder. Finland : (Sorry if the names are messed up, but I don't speak Finnish) Penikojan, Someron. In a pegmatite.