AM-2018-10018-A · Goethitearchived
physical & structuralrev. 3
| designation | Goethite |
|---|---|
| chemical formula | FeO(OH) |
| classification | Oxide-hydroxide |
| crystal system | Orthorhombic |
| mohs hardness | 5 – 5.5 |
| density (g/cm³) | 4.31 |
| colour | Brown to yellowish brown |
| type locality | Bancroft, Ontario, Canada |
raman spectroscopy532 nm · pass A
reported peaks (cm⁻¹): 300, 384, 478, 550, 685
notessubmitter remarks + registry
Macroscopic appearance consistent with goethite; no surface alteration observed at the time of intake.