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| | August 2001 |
 | | The other six akaganeite, bernalite, feroxyhyte, ferrihydrite, maghemite, and wustite are quite rare as specimens, and identification requires laboratory tests, such as X-Ray diffraction or [for maghemite] Mossbauer spectroscopy. |
 | | It is a polymorph of akaganeite, feroxyhyte, and lepidocrocite. |
 | | It is a polymorph of akaganeite, goethite, and feroxyhyte. |
| www.mineralsocal.org /bulletin/2001/2001_aug.htm (3334 words) |
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