On examining a specimen of manganite from Harzgerode, consisting of iron-black crystals of apparently long-prismatic habit, it was found that they were, in most instances, composed of many individual crystals, the latter ranging from about two to four millimetres in length. As they seem to differ in habit, so far as I know, from the crystals of manganite hitherto described and figured, a short account of them, pending more careful investigation and measurement, may be of interest.