-
Jacobsite is a
manganese iron
oxide mineral. It is in the
spinel group and
forms a
solid solution series with magnetite. The
chemical formula is (Mn,Mg)Fe2O4...
- Bixbyite, (FeIII,MnIII)2O3, a manganese(III) iron(III)
oxide mineral Jacobsite, MnIIFeIII2O4, a manganese(II) iron(III)
oxide mineral Columbite, (FeII...
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occurs in ****ociation with: zincite, willemite, franklinite, rhodonite,
jacobsite, diopside, gageite, bustamite, manganocalcite, glaucochroite, calcite...
- 1,500-2,900
siderite 1,300-11,000
chromite 3,000-120,000
orthopyroxene 1,500-1,800
fayalite 5,500
olivine 1,600
jacobsite 25,000
franklinite 450,000...
- Iron spinels: Cuprospinel: CuFe2O4 Franklinite: (Fe,Mn,Zn)(Fe,Mn)2O4
Jacobsite: MnFe2O4 Magnesioferrite: MgFe2O4 Magnetite: FeFe2O4,
where one Fe is...
- (synonym of vesuvianite)
Iolite (a gem-quality
variety of cordierite)
Jacobsite Jadarite Jadeite Jaffeite Jalpaite Jamesonite Janggunite Jarosewichite...
- Jáchymovite Jác
Jamborite Jbr
Jeppeite Jep
Johnsomervilleite Jsv
Julienite Jln
Jacobsite Jcb
Jamesite Jms
Jeremejevite Jer
Johntomaite Jtm
Jungite Jun Jacquesdietrichite...
- iron
oxide for red hues,
calcium carbonate, iron
magnetite and
manganese Jacobsite ores for
black and
calcium silicate for white. The
black pigment, which...
- Ioi mine, ****an
rhodochrosite sonolite manganosite pyrochroite jacobsite hausmannite galaxite Wessels Mine,
South Africa rhodochrosite leucophoenicite...
- ferrite), or
manganese (MnFe2O4)
which occurs naturally as the
mineral jacobsite. Less
often bi****h, strontium, zinc as
found in franklinite, aluminum...
