Magnetite (original) (raw)
Colour:
Greyish black or iron black
Lustre:
Metallic, Sub-Metallic
Name:
Originally called lodestone as early as 1548 and by other names. Named in 1845 by Wilhelm Karl von Haidinger for the locality at Magnesia, Greece (site for lodestone).
Jacobsite-Magnetite Series. Magnesioferrite-Magnetite Series.
Magnetite is an important iron ore, along with hematite.
It is usually easily distinguished by being strongly magnetic, with black octahedral crystals.
Nanoinclusions of magnetite crystals cause the iridescence of Rainbow obsidian (Nadin, 2007). Extremely thin layers of 200-nm octahedral crystals of magnetite give some basalt surfaces an iridescent sheen (Nadin, 2007).
May precipitate from supersaturated volcanic gas due to its cooling as shown in an experiment by Africano et al. (2002) (actually a predominant precipitate from ca. 850 down to 650oC in this particular experiment).
Long-form identifier:
mindat:1:1:2538:2
638fda79-4914-4fc0-9169-3c497a942ec8
Approved, 'Grandfathered' (first described prior to 1959)
4.BB.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations
7.2.2.3
7 : MULTIPLE OXIDES
2 : AB2X4
7.20.2
7 : Oxides and Hydroxides
20 : Oxides of Fe
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Mag | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Mag | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
Mag | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Mag | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
Mgt | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Mag | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30 |
Colour:
Greyish black or iron black
Hardness:
VHN100=681 - 792 kg/mm2 - Vickers
Parting:
On {111}, especially good. Also reported as parting planes: {001}, {011}, {138}.
Fracture:
Irregular/Uneven
Density:
5.175 g/cm3 (Measured) 5.2 g/cm3 (Calculated)
Birefringence:
Isotropic minerals have no birefringence
Reflectivity:
Wavelength | R |
---|---|
400nm | 22.3% |
420nm | 21.8% |
440nm | 21.3% |
460nm | 20.8% |
480nm | 20.5% |
500nm | 20.3% |
520nm | 20.3% |
540nm | 20.4% |
560nm | 20.5% |
580nm | 20.6% |
600nm | 20.6% |
620nm | 20.7% |
640nm | 20.8% |
660nm | 20.9% |
680nm | 21.0% |
700nm | 21.2% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 22.3%.
Colour in reflected light:
Grey with brownish tint
Internal Reflections:
None
Pleochroism:
Non-pleochroic
Comments:
Twin lamellae and zonal growth pattern exhibited in polished section by magnetite at times.
Mindat Formula:
Fe2+Fe3+2O4
Common Impurities:
Mg,Zn,Mn,Ni,Cr,Ti,V,Al
Class (H-M):
m_3_m _(_4/_m_32/m ) - Hexoctahedral
Cell Parameters:
a = 8.396 Å
Unit Cell V:
591.86 ų (Calculated from Unit Cell)
Morphology:
Crystals usually octahedral, sometimes dodecahedral, striated on {011} parallel [011]; less frequently with modifying {001} or {hhl}. Cubic (Balmat, NY), rare. Skeletonized microcrystals found in igneous rocks. Massive, granular, coarse to fine.
Twinning:
Common on {111}, with the same face as the composition face. Twins flattened parallel to {111} (common spinel law twins), or as lamellar twins, producing striae on {111}. Twin gliding, with K1{111}, K2{111}.
Crystal Atlas:
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ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0000945 | Magnetite | Wechsler B A, Lindsley D H, Prewitt C T (1984) Crystal structure and cation distribution in titanomagnetites (Fe3-xTixO4) American Mineralogist 69 754-770 | ![]() |
1984 | synthetic | 0 | 293 |
0002400 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 0 | 293 | |
0002401 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 1.4 | 293 | |
0002402 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 2.3 | 293 | |
0002403 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 3.4 | 293 | |
0002404 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 6.6 | 293 | |
0002405 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 8.3 | 293 | |
0002406 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 11.3 | 293 | |
0002407 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 12.5 | 293 | |
0002408 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 13.5 | 293 | |
0002409 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 15.7 | 293 | |
0002410 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 17.5 | 293 | |
0002411 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 19.4 | 293 | |
0002412 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 21.8 | 293 | |
0002413 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 24.2 | 293 | |
0002414 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 26.9 | 293 | |
0002415 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure American Mineralogist 85 514-523 | ![]() |
2000 | 30.3 | 293 | |
0002416 | Magnetite | Haavik C, Stolen S, Fjellvag H, Hanfland M, Hausermann D (2000) Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure Sample at 40 GPa, CaTi2O4 structure type American Mineralogist 85 514-523 | ![]() |
2000 | 0 | 293 | |
0002762 | Magnetite | Fjellvag H, Hauback B C, Vogt T, Stolen S (2002) Monoclinic nearly stoichiometric wustite at low temperatures American Mineralogist 87 347-349 | ![]() |
2002 | 0 | 10 | |
0002763 | Magnetite | Fjellvag H, Hauback B C, Vogt T, Stolen S (2002) Monoclinic nearly stoichiometric wustite at low temperatures American Mineralogist 87 347-349 | ![]() |
2002 | 0 | 8 | |
0004815 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0004816 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0004817 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0004818 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0004819 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0004820 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0004821 | Magnetite | Bosi F, Halenius U, Skogby H (2009) Crystal chemistry of the magnetite-ulvospinel series American Mineralogist 94 181-189 | ![]() |
2009 | synthetic | 0 | 293 |
0005178 | Magnetite | Stout M Z, Bayliss P (1980) Crystal structure of two ferrian ulvospinels from British Columbia The Canadian Mineralogist 18 339-341 | ![]() |
1980 | Aiyansh basalt lava flow, Nass River valley, British Columbia, Canada | 0 | 293 |
0005179 | Magnetite | Stout M Z, Bayliss P (1980) Crystal structure of two ferrian ulvospinels from British Columbia The Canadian Mineralogist 18 339-341 | ![]() |
1980 | Itcha Mountain hawaiite lava flow, central British Columbia, Canada | 0 | 293 |
0007394 | Magnetite | Finger L W, Hazen R M, Hofmeister A M (1986) High-pressure crystal chemistry of spinel (MgAl2O4) and magnetite (Fe3O4): comparisons with silicate spinels Physics and Chemistry of Minerals 13 215-220 | 1986 | 0.0001 | 293 | ||
0007395 | Magnetite | Finger L W, Hazen R M, Hofmeister A M (1986) High-pressure crystal chemistry of spinel (MgAl2O4) and magnetite (Fe3O4): comparisons with silicate spinels Physics and Chemistry of Minerals 13 215-220 | 1986 | 1.3 | 293 | ||
0007396 | Magnetite | Finger L W, Hazen R M, Hofmeister A M (1986) High-pressure crystal chemistry of spinel (MgAl2O4) and magnetite (Fe3O4): comparisons with silicate spinels Physics and Chemistry of Minerals 13 215-220 | 1986 | 2.6 | 293 | ||
0007397 | Magnetite | Finger L W, Hazen R M, Hofmeister A M (1986) High-pressure crystal chemistry of spinel (MgAl2O4) and magnetite (Fe3O4): comparisons with silicate spinels Physics and Chemistry of Minerals 13 215-220 | 1986 | 3.9 | 293 | ||
0007398 | Magnetite | Finger L W, Hazen R M, Hofmeister A M (1986) High-pressure crystal chemistry of spinel (MgAl2O4) and magnetite (Fe3O4): comparisons with silicate spinels Physics and Chemistry of Minerals 13 215-220 | 1986 | 4.5 | 293 | ||
0007418 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 0.0001 | 293 | ||
0007419 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 0.63 | 293 | ||
0007420 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 1.55 | 293 | ||
0007421 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 2.09 | 293 | ||
0007422 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 2.76 | 293 | ||
0007423 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 3.67 | 293 | ||
0007424 | Magnetite | Nakagiri N, Manghnani M H, Ming L C, Kimura S (1986) Crystal structure of magnetite under pressure Physics and Chemistry of Minerals 13 238-244 | 1986 | 4.44 | 293 | ||
0007766 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007771 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007776 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007781 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007824 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007829 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007834 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007847 | Magnetite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0009109 | Magnetite | Gatta G D, Kantor I, Ballaran T B, Dubrovinsky L, McCammon C (2007) Effect of non-hydrostatic conditions on the elastic behaviour of magnetite: an in situ single-crystal X-ray diffraction study Physics and Chemistry of Minerals 34 627-635 | 2007 | synthetic | 0.0001 | 293 | |
0009110 | Magnetite | Gatta G D, Kantor I, Ballaran T B, Dubrovinsky L, McCammon C (2007) Effect of non-hydrostatic conditions on the elastic behaviour of magnetite: an in situ single-crystal X-ray diffraction study Physics and Chemistry of Minerals 34 627-635 | 2007 | synthetic | 4.99 | 293 | |
0009111 | Magnetite | Gatta G D, Kantor I, Ballaran T B, Dubrovinsky L, McCammon C (2007) Effect of non-hydrostatic conditions on the elastic behaviour of magnetite: an in situ single-crystal X-ray diffraction study Physics and Chemistry of Minerals 34 627-635 | 2007 | synthetic | 9.21 | 293 | |
0009740 | Magnetite | Fleet M E (1981) The structure of magnetite Acta Crystallographica B37 917-920 | ![]() |
1981 | 0 | 293 | |
0009994 | Magnetite | Fleet M E (1984) The structure of magnetite: two annealed natural magnetites, Fe3.005O4 and Fe2.96Mg0.04O4 Acta Crystallographica C40 1491-1493 | ![]() |
1984 | 0 | 293 | |
0009995 | Magnetite | Fleet M E (1984) The structure of magnetite: two annealed natural magnetites, Fe3.005O4 and Fe2.96Mg0.04O4 Acta Crystallographica C40 1491-1493 | ![]() |
1984 | 0 | 293 | |
0017295 | Magnetite | Montoro V (1938) Miscibilita fra gli ossidi salini di ferro e di manganese _cod_database_code 1010369 Gazzetta Chimica Italiana 68 728-733 | 1938 | 0 | 293 | ||
0020586 | Magnetite | Fleet M E (1986) The structure of magnetite: Symmetry of cubic spinels Journal of Solid State Chemistry 62 75-82 | 1986 | Natural, not provided | 0 | 293 | |
0020587 | Magnetite | Fleet M E (1986) The structure of magnetite: Symmetry of cubic spinels Journal of Solid State Chemistry 62 75-82 | 1986 | Natural, not provided | 0 | 293 | |
0020588 | Magnetite | Fleet M E (1986) The structure of magnetite: Symmetry of cubic spinels Journal of Solid State Chemistry 62 75-82 | 1986 | Natural, not provided | 0 | 293 | |
0020589 | Magnetite | Fleet M E (1986) The structure of magnetite: Symmetry of cubic spinels Journal of Solid State Chemistry 62 75-82 | 1986 | Natural, not provided | 0 | 293 | |
0020590 | Magnetite | Fleet M E (1986) The structure of magnetite: Symmetry of cubic spinels Journal of Solid State Chemistry 62 75-82 | 1986 | Natural, not provided | 0 | 293 | |
0013895 | Magnetite | Fjellvag H, Gronvold F, Stolen S, Hauback B C (1996) On the crystallographic and magnetic structures of nearly stoichiometric iron monoxide Journal of Solid State Chemistry 124 52-57 | 1996 | synthetic | 0 | 293 | |
0013896 | Magnetite | Fjellvag H, Gronvold F, Stolen S, Hauback B C (1996) On the crystallographic and magnetic structures of nearly stoichiometric iron monoxide Journal of Solid State Chemistry 124 52-57 | 1996 | synthetic | 0 | 293 | |
0017938 | Magnetite | Bragg W (1915) The Structure of Magnetite and the Spinels _cod_database_code 1011032 Nature (London) 95 561-561 | 1915 | 0 | 293 | ||
0017981 | Magnetite | Claassen A (1926) The scattering power of oxygen and iron for X-Rays _cod_database_code 1011084 Proceedings of the Physical Society of London 38 482-487 | 1926 | 0 | 293 |
CIF Raw Data - click here to close
Epitaxy Comments:
Hematite overgrowths on, and inclusions in, magnetite; ilmenite inclusions, rutile overgrowths, chlorite group overgrowths, pyrophanite inclusions; magnetite on hematite; inclusions in muscovite; inclusions in hematite; inclusions in ilmenite; magnetite overgrowths on olivine.
Pseudobrookite on magnetite with pseudobrookite {100}[001] parallel to magnetite {111}[110].
Image Loading
Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.852 Å | (8) |
2.967 Å | (30) |
2.532 Å | (100) |
2.4243 Å | (8) |
2.0993 Å | (20) |
1.7146 Å | (10) |
1.6158 Å | (30) |
1.4845 Å | (40) |
1.4192 Å | (2) |
1.3277 Å | (4) |
1.2807 Å | (10) |
1.2659 Å | (4) |
1.2119 Å | (2) |
1.1221 Å | (4) |
1.0930 Å | (12) |
1.0496 Å | (6) |
0.9896 Å | (2) |
0.9695 Å | (6) |
0.9632 Å | (4) |
0.9388 Å | (4) |
0.8952 Å | (2) |
0.8802 Å | (6) |
0.8569 Å | (8) |
0.8233 Å | (4) |
0.8117 Å | (6) |
Geological Setting:
Common igneous accessory mineral. In sedimentary banded iron formations.
Simplified Chinese:磁铁矿
Traditional Chinese:磁鐵礦
Other Members of this group:
Associated Minerals Based on Photo Data:
Thermal Behaviour:
Before the blowpipe, fusible with great difficulty. In an oxidizing flame, loses its magnetic properties.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
Ore of iron.
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
- Ore
- Igneous rock
- Normal crystalline igneous rock
* Coarse-grained ("plutonic") crystalline igneous rock
* Granitoid
* Tonalite
* Charnockitic tonalite
* Syenitoid
* Syenite
* Peralkaline syenite
* Angolaite
* Coarse-grained-ultramafic-rock
* Peridotite
* Dunite
* Alexoite
* Cumberlandite
* Pyroxene-hornblende-peridotite
* Valbellite
* Pyroxenite
* Olivine pyroxenite
* Olivine clinopyroxenite
* Koswite
* Pyroxenite (s.s.)
* Clinopyroxenite
* Aegirinolith
* Jacupirangite
* Websterite
* Anabohitsite
* Fine-grained ("volcanic") normal crystalline igneous rock
* Trachytoid
* Basaltic-trachyandesite
* Mugearite
* Basic volcanic rock
* Basaltoid
* Basalt
* Mijakite
* Arapahite
* Tephritoid
* Phonolitic-tephrite
* Tahitite
* Fine-grained ultramafic-rock
* Picritic-rock
* Meimechite
* Picrobasalt
* Oceanite
* Porphyry
* Ouachitite - Exotic crystalline igneous rock
* Melilite-bearing rock
* Melilitolite
* Magnetite-pyroxene melilitolite
* Lamproite
* Kajanite
* Igneous rock of restricted mineralogy
* Nelsonite (of Egorov)
* Olivine-magnetitite
* Ore olivinite
* Phoscorite
* Magnetitite
* Apatite-magnetite-rock
* Spinellite
* Magnetite spinellite
- Normal crystalline igneous rock
- Sedimentary rock and sediment
- Metamorphic rock
- Meta-igneous rock
* Metagabbro
* Epidiorite (of Gümbel) - Metasedimentary rock
* Meta-ironstone
* Meta-ooid-ironstone
* Collobrièrite - Very low to low-grade metamorphic rock
* Greenschist
* Chlorogrisonite schist
* Cucalite
* Gadriolite
* Valrheinite - Gneiss
* Riebeckite-quartz-feldspar gneiss - Schist
* Chlorite schist
* Magnetite-chlorite schist - Contact metamorphic rock
* Granofels
* Hornfels
* Mafic-hornfels
* Magnetite-olivine-augite-plagioclase mafic-hornfels - Metasomatic-rock
* Skarn
* Magnesian-skarn
* Calc-skarn
* Magnetite skarn
* Rodingite
* Fault-related alkaline metasomatite
* Apojasperoid - Impactite
* Multiple impact impactite
* Shock lithified impact regolith
* Shock lithified impact regolith breccia
* Regolith breccia
* Martian basaltic breccia
- Meta-igneous rock
Reference List:
Showing 20 significant localities out of 20,185 recorded on mindat.org.
This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The
symbol next to localities in the list can be used to jump to that position on the map.