Magnetite
| ID | 305 | |
|---|---|---|
| Mineral | Magnetite | |
| Location | Kola - Murmansk Oblast - Russia | |
| Fluorescence | LW-UV: close SW-UV: close |
|
| Mindat.org |
View Magnetite information at mindat.org |
|
Mindat data
| ID | 2538 |
|---|---|
| Long ID | 1:1:2538:2 |
| Formula |
Fe2+Fe3+2O4
|
| IMA Status |
0 1 |
| Other Occurrences | Common igneous accessory mineral. In sedimentary banded iron formations. |
| Industrial | Ore of iron. |
| Discovery Year | 1845 |
| Diapheny | Opaque |
| Cleavage | None |
| Tenacity | brittle |
| Colour | Greyish black or iron black |
| Hardness (min) | 5.5 |
| Hardness (max) | 6.5 |
| Luminescence | None |
| Lustre | Metallic |
| About the 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 |
| Streak | Black |
| Crystal System | Isometric |
| Fracture type | Irregular/Uneven |
| Morphology |
Crystals usually octahedral, sometimes dodecahedral, striated on {011} parallel |
| 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 |
| UV | Not fluorescent in UV. |
| Thermal Behaviour | Before the blowpipe, fusible with great difficulty. In an oxidizing flame, loses its magnetic properties. |
| shortcode_ima | Mag |
| Group | Spinel Subgroup |
Details
Price: € 20
Dimensions: Not registered
Weight: 392 g
Visibile in overview:
Notes:
| Symbol | Element | |
|---|---|---|
| Fe | Iron | |
| O | Oxygen |